CN110180602A - Low-temperature denitration catalyst and preparation method thereof - Google Patents
Low-temperature denitration catalyst and preparation method thereof Download PDFInfo
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- CN110180602A CN110180602A CN201910567194.6A CN201910567194A CN110180602A CN 110180602 A CN110180602 A CN 110180602A CN 201910567194 A CN201910567194 A CN 201910567194A CN 110180602 A CN110180602 A CN 110180602A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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Abstract
The invention discloses a kind of low-temperature denitration catalyst, including carrier and active material, for the carrier by mangaic acid praseodymium and titanium dioxide, active material is neodymia, molybdenum oxide and yttrium oxide.Low-temperature denitration catalyst of the invention has good NOxConversion temperature, to NOxThere are lower initiation temperature and catalytic performance, also there is excellent water resistant heat aging performance；Mangaic acid praseodymium and titanium dioxide collaboration of the present invention is used as catalyst carrier, greatly improves the specific surface area and Kong Rong of carrier, makes it have more active adsorption sites, is conducive to the desulphurization denitration performance for improving catalyst；Neodymia, molybdenum oxide and yttrium oxide collaboration are used as active material, improve to NH3Chemical adsorption capacity extend the service life of low-temperature denitration catalyst to improve catalyst activity.
Description
Technical field
The present invention relates to a kind of catalyst technical fields, more particularly to a kind of low-temperature denitration catalyst and its preparation side
Method.
Background technique
Nitrogen oxides (NOX) it is one of main atmosphere pollution, including NO, NO2Etc. a variety of nitrogen oxides, to human body
Health and animals and plants existence can all cause certain injury, such as form acid rain, photochemical fog, but also can generate a variety of two
Secondary pollution.Nitrogen oxides be generate ozone one of important as precursors object and forming region fine particles pollution and haze it is important
Reason, so that the developed areas such as China's Delta of the Pearl River atmospheric visibility be made to decline increasingly, haze number of days is continuously increased.?
Environmental consciousness and require more more and more intense today, how to remove the discharge of nitrogen oxides, becomes more and more urgent problem.
Be directed to exhaust gas from diesel vehicle denitration technology maturation the most at present is SCR denitration technology.Traditional SCR technology is will to contain
Ammonia additive (such as ammonia, urea) sprays into about 300~420 DEG C of temperature of flue gas, under the effect of the catalyst, adds containing ammonia
Add agent to react with NOx, generates N2And H2O.Traditional SCR method is a kind of higher method of conversion rate of NOx, up to 60%-
90%.But the problem of traditional SCR technology, essentially consists in: (1) additive containing ammonia under the high temperature conditions with O2It burns, or with
Sulfur oxide reaction generates more particulate matters, if host uses high sulphur content diesel oil, SCR has to be generated during catalyst reduction
Ammonium sulfate blocking danger.(2) SCR denitration used at present is mainly with vanadium titanium-based (V2O5/TiO2) based on, it is living
Property group is divided into vanadic anhydride, and carrier is titanium dioxide.Although the denitration activity of catalytic component based on vanadium and resisting sulfur dioxide
Ability is very high, but it must be just active under very high temperature (300-400 DEG C), and belonging to additionally, due to vanadic anhydride has
Noxious material is highly soluble in water, in this way polluted underground water and soil etc. in order to prevent, discarded catalyst cannot at will fill or
Air storage.(3) unobvious for the denitration effect of low temperature diesel oil.
Summary of the invention
In view of the above shortcomings, it is an object of the invention to develop a low-temperature denitration catalyst, there is high activity, low
The advantages that poison, good hydrothermal stability, and the NOx removal activity with higher in low temperature environment.
Technical solution of the present invention is summarized as follows:
A kind of low-temperature denitration catalyst, wherein including carrier and active material, the carrier is by mangaic acid praseodymium and titanium dioxide
Titanium, the active material are neodymia, molybdenum oxide and yttrium oxide.
Preferably, the low-temperature denitration catalyst, wherein the catalyst further includes lubricant, binder, plasticizing
Agent, anti-wear agent and surfactant.
Preferably, the low-temperature denitration catalyst, wherein by weight, the catalyst includes following weight
The material of part:
Preferably, the low-temperature denitration catalyst, wherein the lubricant includes the molybdenum disulfide of 55~60wt%
With the cobalt dioxide of 40~45wt%.
Preferably, the low-temperature denitration catalyst, wherein the binder includes the manganese dioxide of 76~80wt%
With the bentonite of 20~24wt%.
Preferably, the low-temperature denitration catalyst, wherein the plasticiser includes the epoxidation four of 60~65wt%
The decanedioic acid two (two-ethylhexyls) of hydrogen diisooctyl phthalate and 35~40wt%.
Preferably, the low-temperature denitration catalyst, wherein the anti-wear agent includes 40~50wt% titanium carbide and 50
~60wt% tetrapropanate fluorine rubber powder.
Preferably, the low-temperature denitration catalyst, wherein the surfactant includes 40~50wt% octadecane
Base sodium sulphate and 50~60wt% monostearate sorb are smooth.
Preferably, the low-temperature denitration catalyst, wherein further include 12~16 parts of stannous chloride.
A kind of preparation method of low-temperature denitration catalyst, wherein the following steps are included:
1) mangaic acid praseodymium and titanium dioxide are taken, in 70~75 DEG C of 6~8h of vacuum oven, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in, continues 2~3h of stirring；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500~550 DEG C, is obtained in corresponding oxide active
The heart: neodymia, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18~20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
The beneficial effects of the present invention are:
(1) low-temperature denitration catalyst of the invention has good NOxConversion temperature, to NOxThere is lower initiation temperature
And catalytic performance, also there is excellent water resistant heat aging performance.
(2) mangaic acid praseodymium and titanium dioxide collaboration of the present invention is used as catalyst carrier, greatly improves the specific surface of carrier
Long-pending and Kong Rong, makes it have more active adsorption sites, is conducive to the desulphurization denitration performance for improving catalyst；Neodymia, oxygen
Change molybdenum and yttrium oxide collaboration is used as active material, improves to NH3Chemical adsorption capacity extend to improve catalyst activity
The service life of low-temperature denitration catalyst.
Specific embodiment
The present invention will be further described in detail below with reference to the embodiments, to enable those skilled in the art referring to specification
Text can be implemented accordingly.
This case proposes a kind of low-temperature denitration catalyst, wherein including carrier and active material, carrier is by mangaic acid praseodymium and dioxy
Change titanium, active material is neodymia, molybdenum oxide and yttrium oxide.
Titanium dioxide is carrier, specific surface area, suitable pore structure and water absorption rate with higher, is had stronger mechanical strong
Degree and stability, heat resistance, acid resistance are good, and mangaic acid praseodymium and titanium dioxide synergistic effect greatly improve the ratio table of carrier
Area and Kong Rong make it have more active adsorption sites, are conducive to the desulphurization denitration performance for improving catalyst.Neodymia,
Molybdenum oxide and yttrium oxide collaboration are used as active material, and the effect of neodymia is under the action of reducing agent NH3, by NO and NO2Also
It originally is N2, wherein molybdenum oxide helps to improve the fast reaction step of neodymia, and improves the selectivity of neodymia, and yttrium oxide has
Help improve to NH for (150 DEG C~280 DEG C) at low temperature3Chemical adsorption capacity, to improve catalyst activity, and can reduce
SO2/SO3Conversion ratio, extend the service life of low-temperature denitration catalyst.
As the another embodiment of this case, wherein catalyst further includes lubricant, binder, plasticiser, anti-wear agent and surface
Activating agent.
As the another embodiment of this case, wherein by weight, catalyst includes the material of following parts by weight:
As the another embodiment of this case, wherein lubricant includes the molybdenum disulfide and 40~45wt% of 55~60wt%
Cobalt dioxide.Lubricant and polymer have good compatibility, its cohesion between polymeric inner plays and reduces polymer molecule
The effect of power, so as to improve the internal frictional heat generation of melt and the mobility of melt.The preferred lubricant of this case be molybdenum disulfide and
Cobalt dioxide.
As the another embodiment of this case, wherein binder includes the manganese dioxide and 20~24wt% of 76~80wt%
Bentonite.Binder improves the adhesion strength of polymer and catalyst, improves burst temperature when its drying, and resistance to compression can be improved
Intensity, the preferred binder of this case are that manganese dioxide and bentonite act synergistically.
As the another embodiment of this case, wherein plasticiser includes the epoxidation tetrahydrophthalic acid two of 60~65wt%
The decanedioic acid two (two-ethylhexyls) of isodecyl ester and 35~40wt%.Epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems two
Sour two (two-ethylhexyls) synergistic effect, improves the flexility for being kneaded product, reduces hardness.
As the another embodiment of this case, wherein anti-wear agent includes 4 third fluorine of 40~50wt% titanium carbide and 50~60wt%
Rubber powder.Anti-wear agent improves the hydrothermal stability and wear-resisting property of catalyst, to improve its service life, this case is preferably resistance to
Grinding agent is titanium carbide and tetrapropanate fluorine rubber powder.
As the another embodiment of this case, wherein surfactant include 40~50wt% sodium stearyl sulfate and 50~
60wt% monostearate sorb is smooth.Due to having wetting, emulsification, this case is mentioned surfactant by the way that surfactant is added
The compatibility performance of high polymer and solid.
As the another embodiment of this case, wherein further include 12~16 parts of stannous chloride.By the way that stannous chloride is added, keep away
Exempt from the situation that the ammonium sulfate that additive containing ammonia generates in reduction process is easy blocking pipeline, so that denitrification rate is higher, pipeline
More easy cleaning.
A kind of preparation method of low-temperature denitration catalyst, wherein the following steps are included:
1) mangaic acid praseodymium and titanium dioxide are taken, in 70~75 DEG C of 6~8h of vacuum oven, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in, continues 2~3h of stirring；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500~550 DEG C, is obtained in corresponding oxide active
The heart: neodymia, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18~20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Specific embodiment and comparative example is listed below:
Embodiment 1:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant.
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 55wt% and the cobalt dioxide of 45wt%；Binder includes the titanium dioxide of 76wt%
The bentonite of manganese and 24wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 40wt% of 60wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 40wt% titanium carbide and 60wt% tetrapropanate fluorine rubber powder；Surfactant includes
40~50wt% sodium stearyl sulfate and 50~60wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 70 DEG C of vacuum oven 6h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 2h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Embodiment 2:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 58wt% and the cobalt dioxide of 42wt%；Binder includes the titanium dioxide of 78wt%
The bentonite of manganese and 22wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 37wt% of 63wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 45wt% titanium carbide and 55wt% tetrapropanate fluorine rubber powder；Surfactant includes
46wt% sodium stearyl sulfate and 54wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 72 DEG C of vacuum oven 7h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 2.5h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 19h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Embodiment 3:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide；It further include lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 60wt% and the cobalt dioxide of 40wt%；Binder includes the titanium dioxide of 80wt%
The bentonite of manganese and 20wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 35wt% of 65wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 50wt% titanium carbide and 50 tetrapropanate fluorine rubber powder；Surfactant includes
50wt% sodium stearyl sulfate and 50wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 75 DEG C of vacuum oven 8h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 3h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 550 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 1:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier are titanium dioxide, and the active material is oxygen
Change neodymium, molybdenum oxide and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant.
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 55wt% and the cobalt dioxide of 45wt%；Binder includes the titanium dioxide of 76wt%
The bentonite of manganese and 24wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 40wt% of 60wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 40wt% titanium carbide and 60wt% tetrapropanate fluorine rubber powder；Surfactant includes
40~50wt% sodium stearyl sulfate and 50~60wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) titanium dioxide is taken, in 70 DEG C of vacuum oven 6h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) titanium dioxide pre-processed in continues to stir 2h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 2:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant.
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 55wt% and the cobalt dioxide of 45wt%；Binder includes the titanium dioxide of 76wt%
The bentonite of manganese and 24wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 40wt% of 60wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 40wt% titanium carbide and 60wt% tetrapropanate fluorine rubber powder；Surfactant includes
40~50wt% sodium stearyl sulfate and 50~60wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 70 DEG C of vacuum oven 6h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the yttrium oxide ingredient in catalyst is provided by yttrium nitrate；
The aequum for calculating various raw materials, weighs raw material according to quantity, and neodymium nitrate is added in deionized water, is stirred evenly, and nitric acid is added
Yttrium continues to stir evenly, and the mangaic acid praseodymium and titanium dioxide pre-processed in 1) is added, and continues to stir 2h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 3:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 58wt% and the cobalt dioxide of 42wt%；Binder includes the titanium dioxide of 78wt%
The bentonite of manganese and 22wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 37wt% of 63wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 45wt% titanium carbide and 55wt% tetrapropanate fluorine rubber powder；Surfactant includes
46wt% sodium stearyl sulfate and 54wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 72 DEG C of vacuum oven 7h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum；
The aequum for calculating various raw materials, weighs raw material according to quantity, and neodymium nitrate is added in deionized water, stirs evenly, is then added
Nitric acid molybdenum, stirs evenly, and the mangaic acid praseodymium and titanium dioxide pre-processed in 1) is added, and continues to stir 2.5h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 19h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 4:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide, further includes lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 58wt% and the cobalt dioxide of 42wt%；Binder is bentonite；Plasticiser packet
Include the epoxidation diisodecyl tetrahydrophthalate of 63wt% and the decanedioic acid two (two-ethylhexyls) of 37wt%；Anti-wear agent
Including 45wt% titanium carbide and 55wt% tetrapropanate fluorine rubber powder；Surfactant include 46wt% sodium stearyl sulfate and
54wt% monostearate sorb is smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 72 DEG C of vacuum oven 7h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 2.5h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, molybdenum disulfide, cobalt dioxide, bentonite, epoxidation tetrahydrophthalic acid are successively added
Diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, monostearate mountain
Pears are smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 19h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 5:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide；It further include lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 60wt% and the cobalt dioxide of 40wt%；Binder includes the titanium dioxide of 80wt%
The bentonite of manganese and 20wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 35wt% of 65wt%
Diacid two (two-ethylhexyls)；Anti-wear agent is tetrapropanate fluorine rubber powder；Surfactant include 50wt% sodium stearyl sulfate and
50wt% monostearate sorb is smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 75 DEG C of vacuum oven 8h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 3h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 550 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), tetrapropanate fluorine rubber powder, sodium stearyl sulfate, monostearate mountain
Pears are smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Comparative example 6:
A kind of low-temperature denitration catalyst, including carrier and active material, carrier is by mangaic acid praseodymium and titanium dioxide, the activity
Substance is neodymia, molybdenum oxide and yttrium oxide；It further include lubricant, binder, plasticiser, anti-wear agent and surfactant；
Catalyst includes the material of following parts by weight:
Lubricant includes the molybdenum disulfide of 60wt% and the cobalt dioxide of 40wt%；Binder includes the titanium dioxide of 80wt%
The bentonite of manganese and 20wt%；Plasticiser includes epoxidation diisodecyl tetrahydrophthalate and the last of the ten Heavenly stems of 35wt% of 65wt%
Diacid two (two-ethylhexyls)；Anti-wear agent includes 50wt% titanium carbide and 50 tetrapropanate fluorine rubber powder；Surfactant includes
50wt% sodium stearyl sulfate and 50wt% monostearate sorb are smooth.
A kind of preparation method of low-temperature denitration catalyst, comprising the following steps:
1) mangaic acid praseodymium and titanium dioxide are taken, in 75 DEG C of vacuum oven 8h, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum,
Yttrium oxide ingredient in catalyst is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, by neodymium nitrate
It is added in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added
1) the mangaic acid praseodymium and titanium dioxide pre-processed in continues to stir 3h；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 550 DEG C, obtains corresponding oxide active center: oxidation
Neodymium, molybdenum oxide and yttrium oxide；
4) into said components, it is adjacent that molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro are successively added
Phthalic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, list
Stearic acid sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
Above embodiments 1-3 and traditional SCR catalyst comparative example are subjected to active evaluation test.Experimental condition is as follows:
Gas volume composition: nitric oxide: 500ppm, ammonia: 500ppm, carbon dioxide: 5%, vapor: 4.5%, oxygen
Gas: 14%, nitrogen: Balance Air；Air speed: 40000h-1。
Activity evaluation such as table 1:
Table 1:
Denitrating catalyst of the invention has good NOxConversion temperature, Examples 1 to 3 are real compared with comparative example 1~6
Catalyst in example 1~3 is applied to all have to NOxLower initiation temperature and catalytic performance.And low temperature diesel oil denitration of the invention
After weathering, performance decline is not obvious catalyst, therefore catalyst of the present invention has good water resistant heat aging performance.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details.
Claims (10)
1. a kind of low-temperature denitration catalyst, which is characterized in that including carrier and active material, the carrier is by mangaic acid praseodymium and dioxy
Change titanium, the active material is neodymia, molybdenum oxide and yttrium oxide.
2. low-temperature denitration catalyst according to claim 1, which is characterized in that the catalyst further includes lubricant, glues
Tie agent, plasticiser, anti-wear agent and surfactant.
3. according to claim 1 or 2 described in any item low-temperature denitration catalysts, which is characterized in that by weight, described to urge
Agent includes the material of following parts by weight:
4. low-temperature denitration catalyst according to claim 3, which is characterized in that the lubricant includes 55~60wt%'s
The cobalt dioxide of molybdenum disulfide and 40~45wt%.
5. low-temperature denitration catalyst according to claim 3, which is characterized in that the binder includes 76~80wt%'s
The bentonite of manganese dioxide and 20~24wt%.
6. low-temperature denitration catalyst according to claim 3, which is characterized in that the plasticiser includes 60~65wt%'s
The decanedioic acid two (two-ethylhexyls) of epoxidation diisodecyl tetrahydrophthalate and 35~40wt%.
7. low-temperature denitration catalyst according to claim 3, which is characterized in that the anti-wear agent includes 40~50wt% carbon
Change titanium and 50~60wt% tetrapropanate fluorine rubber powder.
8. low-temperature denitration catalyst according to claim 3, which is characterized in that the surfactant include 40~
50wt% sodium stearyl sulfate and 50~60wt% monostearate sorb are smooth.
9. low-temperature denitration catalyst according to claim 3, which is characterized in that further include 12~16 parts of stannous chloride.
10. the preparation method of described in any item low-temperature denitration catalysts according to claim 1~3, which is characterized in that including with
Lower step:
1) mangaic acid praseodymium and titanium dioxide are taken, in 70~75 DEG C of 6~8h of vacuum oven, is cooled to room temperature；
2) the neodymia ingredient in catalyst is provided by neodymium nitrate, and the molybdenum oxide ingredient in catalyst is provided by nitric acid molybdenum, catalysis
Yttrium oxide ingredient in agent is provided by yttrium nitrate；The aequum for calculating various raw materials, weighs raw material according to quantity, and neodymium nitrate is added
It in deionized water, stirs evenly, nitric acid molybdenum is then added, stirs evenly, yttrium nitrate is added, continues to stir evenly, be added in 1)
The mangaic acid praseodymium and titanium dioxide pre-processed, continues 2~3h of stirring；
3) by the said goods, it is put into Muffle furnace, calcines 5h at 500~550 DEG C, obtains corresponding oxide active center: oxygen
Change neodymium, molybdenum oxide and yttrium oxide；
4) into said components, molybdenum disulfide, cobalt dioxide, manganese dioxide, bentonite, epoxidation tetrahydro neighbour benzene two are successively added
Formic acid diisodecyl ester, decanedioic acid two (two-ethylhexyls), titanium carbide, tetrapropanate fluorine rubber powder, sodium stearyl sulfate, single tristearin
Sour sorb is smooth to be kneaded, and material is kneaded uniform；
5) it will be kneaded the material come out, after curing 18~20h, is added in filtering pre-extruded and squeezes out, be filtered to remove material
6) it by the material after filtering pre-extruded, is formed by mold integral extrusion, and be dried；
7) the said goods are immersed in stannous chloride aqueous solution, after impregnating 8h under room temperature, is dried；
8) according to the length of regulation, above-mentioned finished product is cut, and carries out front end hardened artiwear processing；
9) product is packed.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560900A (en) * | 2008-04-16 | 2009-10-21 | 北京有色金属研究总院 | Vehicle exhaust catalytic cleaner and cold start pollution control application |
| CN101658793A (en) * | 2009-09-29 | 2010-03-03 | 浙江三龙催化剂有限公司 | Titania-based catalytic agent in coal steam-electric plant smoke SCR denitration and preparation method thereof |
| US20100222205A1 (en) * | 2009-02-27 | 2010-09-02 | Steven Bolaji Ogunwumi | Method Of Manufacturing A Catalyst Body By Post-Impregation |
| CN103381362A (en) * | 2013-07-22 | 2013-11-06 | 哈尔滨工业大学 | Low-temperature manganese-based denitration catalyst and preparing method thereof |
| CN103433028A (en) * | 2013-08-16 | 2013-12-11 | 南京工业大学 | Three-way NOx, CO and HC removing catalyst used in marine engine, and preparation method thereof |
| CN104492422A (en) * | 2014-12-25 | 2015-04-08 | 宜兴国电精辉环保设备有限公司 | Denitration catalyst for high-temperature smoke and preparation method of denitration catalyst |
| CN104785102A (en) * | 2015-03-26 | 2015-07-22 | 东华工程科技股份有限公司 | Energy-saving and efficient N2O and NOx removing process |
| CN104971771A (en) * | 2015-07-10 | 2015-10-14 | 山东海润环保科技有限公司 | Low-temperature diesel oil SCR denitration catalyst and preparation method thereof |
| CN106423139A (en) * | 2016-11-14 | 2017-02-22 | 包头稀土研究院 | Rare-earth-based SCR denitration catalyst and preparation method thereof |
-
2019
- 2019-06-27 CN CN201910567194.6A patent/CN110180602A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560900A (en) * | 2008-04-16 | 2009-10-21 | 北京有色金属研究总院 | Vehicle exhaust catalytic cleaner and cold start pollution control application |
| US20100222205A1 (en) * | 2009-02-27 | 2010-09-02 | Steven Bolaji Ogunwumi | Method Of Manufacturing A Catalyst Body By Post-Impregation |
| CN101658793A (en) * | 2009-09-29 | 2010-03-03 | 浙江三龙催化剂有限公司 | Titania-based catalytic agent in coal steam-electric plant smoke SCR denitration and preparation method thereof |
| CN103381362A (en) * | 2013-07-22 | 2013-11-06 | 哈尔滨工业大学 | Low-temperature manganese-based denitration catalyst and preparing method thereof |
| CN103433028A (en) * | 2013-08-16 | 2013-12-11 | 南京工业大学 | Three-way NOx, CO and HC removing catalyst used in marine engine, and preparation method thereof |
| CN104492422A (en) * | 2014-12-25 | 2015-04-08 | 宜兴国电精辉环保设备有限公司 | Denitration catalyst for high-temperature smoke and preparation method of denitration catalyst |
| CN104785102A (en) * | 2015-03-26 | 2015-07-22 | 东华工程科技股份有限公司 | Energy-saving and efficient N2O and NOx removing process |
| CN104971771A (en) * | 2015-07-10 | 2015-10-14 | 山东海润环保科技有限公司 | Low-temperature diesel oil SCR denitration catalyst and preparation method thereof |
| CN106423139A (en) * | 2016-11-14 | 2017-02-22 | 包头稀土研究院 | Rare-earth-based SCR denitration catalyst and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| ZHANG, SHIBO ET AL.,: ""Synergistic Mercury Removal over the CeMnO3 Perovskite Structure Oxide as a Selective Catalytic Reduction Catalyst from Coal Combustion Flue Gas"", 《ENERGY & FUELS》 * |
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