CN109821569A - A kind of honeycomb substrate catalyst and its preparation method and application - Google Patents
A kind of honeycomb substrate catalyst and its preparation method and application Download PDFInfo
- Publication number
- CN109821569A CN109821569A CN201910196996.0A CN201910196996A CN109821569A CN 109821569 A CN109821569 A CN 109821569A CN 201910196996 A CN201910196996 A CN 201910196996A CN 109821569 A CN109821569 A CN 109821569A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- honeycomb substrate
- preparation
- substrate catalyst
- metal salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a kind of honeycomb substrate metallic catalyst and its preparation method and application, honeycomb substrate catalyst of the invention has biggish specific surface area and porous structure, is on the one hand capable of increasing the contact area of reactant and catalyst, improves catalytic efficiency；On the other hand can adsorption-buffering and depth degradation organic matter, it is without secondary pollution, guarantee large-wind-volume low-concentration organic exhaust gas qualified discharge.
Description
Technical field
The present invention relates to a kind of metal oxide or metal oxides and noble metal composite catalyst, and in particular to Yi Zhongfeng
Nest carrier metal catalyst and its preparation method and application.
Background technique
With the rapid development of industry, organic solvent is widely applied, and in oil paint coating, papermaking printing, manufacture and is changed
All with the discharge of a large amount of volatile organic compounds (VOCs) exhaust gas in the production processes of many industries such as work production.At me
State includes: benzene homologues, aldoketones and esters etc. using more several volatile organic matters.VOCs is that a kind of main air is dirty
Object is contaminated, significant damage is constituted to the mankind and environment.
Condensing recovery or the method for catalysis burning is mainly used to handle for high-concentration organic waste gas at present, Neng Gouda
To good treatment effect.But for low concentration (concentration≤100mg/m3) especially Wind Volume organic compounds, such as food and drink oil
Cigarette VOCs, automobile 4S exhaust gas and garbage house foul smell etc., there is presently no treatment process reliable for operation.Catalytic ozonation method drop
Solution VOCs is confirmed to be that one kind can carry out at low temperature by researcher, and the degradation side of the low concentration VOCs of product safety
Method, but this method haves the shortcomings that VOCs permineralization step is complicated, reaction rate is slower.Therefore as used common catalyst
Can only play the role of catalysis reaction to carry out, in this way for the low concentration VOCs of Wind Volume, there are the reaction time not enough, product not
The disadvantages of energy permineralization.
Therefore it is particularly significant to develop a kind of catalyst that large-wind-volume low-concentration organic exhaust gas can be effectively treated.
Summary of the invention
The object of the present invention is to provide a kind of honeycomb substrate catalyst and preparation method thereof, can not to solve existing catalyst
The technical issues of large-wind-volume low-concentration organic exhaust gas is effectively treated.
In order to achieve the above-mentioned object of the invention, one aspect of the present invention provides a kind of honeycomb substrate catalyst, including cellular set
Body and metallic catalyst, the honeycomb substrate include zeolite molecular sieve, one of active carbon or a variety of.
Preferably, the metallic catalyst is Fe2O3、Co2O、NiO、CuO、ZnO、MnOx、Ag2O, in Pt, Pd and Ag
It is one or more.
Preferably, the load capacity of the metallic catalyst is the 0.1%-2% of the honeycomb substrate quality.
Another aspect of the present invention provides a kind of preparation method of honeycomb substrate catalyst, includes the following steps:
Cellular activated carbon is soaked in metal salt solution, absorption is completed；
It washes with water, is then dried；
Sintering processes under inert environments；
It washes with water and dries again.
Preferably, reducing substances are added after completing absorption.
Preferably, the metal salt includes the salt of Fe, Co, Ni, Cu, Zn, Mn, Ag, Pt and Pd.
Preferably, the mass concentration of the metal salt is 0.5%-2%.
Preferably, the temperature of the drying process is 80-120 DEG C.
Preferably, the inert environments include any one or more in nitrogen, argon gas and vacuum.
Preferably, the temperature of the sintering processes is 300-500 DEG C.
Another aspect of the invention provides the honeycomb substrate catalyst in degradation large-wind-volume low-concentration organic exhaust gas
Application.
Compared with prior art, honeycomb substrate catalyst of the invention, on the one hand since biggish specific surface area can make
Reaction contact area must be catalyzed to become larger, that is, increase the contact area of reactant and catalyst, improve catalytic effect；On the other hand,
It is slow to reach absorption but also organic exhaust gas can be adsorbed in the micropore for being temporarily stored in honeycomb substrate for the microcellular structure of honeycomb substrate
The purpose of punching keeps the haptoreaction time of organic matter and ozone elongated, is got higher by the ratio of ozone oxidation, and reach to organic waste
The purpose that gas is greatly degraded, the micropore of honeycomb substrate is released and can continue to play adsorption-buffering after mineralization of organic material
Effect.In addition catalyst of the invention can be degraded with catalysis ozone autoxidation, and ozone is avoided to cause secondary pollution.
The preparation method step of honeycomb substrate catalyst of the invention is few, easy to operate, and the catalyst after preparation compares table
The big catalytic effect of area is good, is suitble to large-scale production and application.
The excellent catalytic effect when present invention is used as ozone oxidation catalyst, can guarantee that large-wind-volume low-concentration organic compounds are held
Continuous qualified discharge, and while coping with pollutant concentration, changes biggish situation.The degradation organic waste gas of energy high degree, effect
Fruit is excellent, is suitable as ozone oxidation catalyst come large-wind-volume low-concentration organic exhaust gas of degrading.
Detailed description of the invention
The scanning electron microscope (SEM) photograph of honeycomb substrate catalyst b after active carbon a described in Fig. 1 one embodiment of the invention, and load；
Fig. 2 is the pictorial diagram of honeycomb substrate catalyst described in one embodiment of the invention.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this
Invention, is not intended to limit the present invention.
On the one hand the embodiment of the present invention provides a kind of honeycomb substrate catalyst, the present invention utilizes the big ratio of honeycomb substrate
Surface area increases the catalysis reaction contact area of metallic catalyst, so that overall catalytic effect is more preferably.In addition knot of the invention
Structure causes the present invention to have the function of absorption, and when organic exhaust gas concentration is larger, the upper limit that can handle more than reaction speed can be with
First by organic exhaust gas adsorption, then the degradation reaction of organic matter is gradually slowly completed, is mineralized into CO2And HO2Be discharged into atmosphere or at
It is permanently adsorbed for innocuous substance, the micropore of honeycomb substrate is released and can continue to play adsorption-buffering work after mineralization of organic material
With.Last catalyst of the invention can be catalyzed extra excessive ozone itself and degrade, and avoid secondary pollution.Bee of the invention
Nest carried catalyst includes honeycomb substrate and metallic catalyst, and the honeycomb substrate includes zeolite molecular sieve, in active carbon
It is one or more.Here it is preferred carrier, does not limit the type of carrier, other high-specific surface area materials can also selects
With if there is novel high surfacing that can also attempt.According to demand with price comprehensive consideration, active carbon and zeolite molecular sieve
Sexual valence is relatively high.
Specifically, the metallic catalyst is Fe2O3、Co2O、NiO、CuO、ZnO、MnOx、Ag2O, in Pt, Pd and Ag
It is one or more.It can also choose metal oxide using metal oxide as catalyst and noble metal is added to combine conduct
Catalyst.
Specifically, the load capacity of the metallic catalyst is the 0.1%-2% of the honeycomb substrate quality.Load capacity is very little
There is no a catalytic effect, load capacity too big waste material while also because plugging gap reduces specific surface area and absorption effect
Fruit, therefore choose the load capacity of this range.
Another aspect of the present invention provides a kind of preparation method of honeycomb substrate catalyst, includes the following steps:
S01: cellular activated carbon is soaked in metal salt solution, completes absorption；
S02: washing with water, and is then dried；
S03: sintering processes under inert environments；
S04: it washes with water and dries again.
Appropriate reducing substances can be added after the first step completes absorption.The amount of reducing substances slightly more than needs to restore
Substance, but reproducibility can be selected suitably, such as choose sodium borohydride as reducing agent, more mildly can be by noble metal oxygen
Compound reduction, but will not preferentially restore common metal oxide, achieve the purpose that selective reduction.
Metal salt includes the salt of Fe, Co, Ni, Cu, Zn, Mn, Ag, Pt and Pd in specific step of embodiment of the present invention S01.
It include potassium permanganate, iron chloride, cobalt chloride, nickel nitrate etc. with these metal salts.Part metals salt can shape after hydrolysis is dry
At metal hydroxides and its hydrate, the metal oxide with catalytic activity is made through oversintering.
The mass concentration of metal salt described in step of embodiment of the present invention S01 is 0.5%-2%.Concentration appropriate can be rigid
It allows the catalyst in load to reach certain thickness well, and the catalyst of load will not be allowed to generate waste.
The temperature of drying process described in step of embodiment of the present invention S02 is 80-120 DEG C.Temperature appropriate can make
Catalyst, which will not shift to an earlier date to react with the ingredient in air, generates poisoning, and in turn ensures faster rate of drying.
Inert environments include any one or more in nitrogen, argon gas and vacuum in step of embodiment of the present invention S03.Root
Different scenes is chosen according to demand, is selected vacuum if requirement is very stringent, is more strictly selected argon gas, less strict, consideration
Then nitrogen can be selected as inertia sublimity to cost.
The temperature of sintering processes is 300-500 degrees Celsius in step of embodiment of the present invention S03.The purpose of sintering is to allow
Metal salt first hydrolyzes be dehydrated to form oxide again at high temperature, and oxide catalyst is made through over cleaning.
The preparation method of honeycomb substrate catalyst of the invention only has four steps, be exactly in simple terms load (or load plus
Reduction), be cleaned and dried, sintering, secondary cleaning it is dry.Step is few, only four steps, easy to operate, intermediate not very complicated behaviour
Make, also without very harsh reaction condition.And the big catalytic effect of specific surface area of catalyst after preparing is good, is suitble to extensive raw
Produce application.
The degradation organic waste gas of excellent catalytic effect energy high degree when the present invention is used as ozonisation catalyst, excellent effect,
Ozone oxidation catalyst is suitable as come low concentration Wind Volume organic exhaust gas of degrading.
Embodiment 1
Standard-sized cellular activated carbon (100*100*100mm) is soaked in certain density liquor potassic permanganate
(loading of Mn oxide be 1wt%), continuously stirs or shake 8 hours, by cellular activated carbon of the absorption after complete with pure
Water sufficiently cleans, and washes away surface impurity, and being placed in baking oven 110 DEG C, drying to constant weight.Active carbon after drying is placed in horse
Not 300 DEG C of high-temperature roasting 3 hours under nitrogen atmosphere in furnace.Catalyst after roasting is washed again with pure water, and in 110
DEG C drying to constant weight.Obtain the cellular activated carbon catalyst of load MnOx.
By load MnO obtained2Cellular activated carbon and the cellular activated carbon of unsupported catalyst carry out specific surface area
It measures (GB/T19587-2017), loads MnO2Cellular activated carbon specific surface area and total hole hold only a small amount of reduction, it is average
Aperture slightly expands.Whole absorption property variation is little.From the point of view of scanning electron microscope result, MnO2It is living in honeycomb by uniform load
The surface of property charcoal.
Cellular activated carbon specific area measuring before and after 1 supported catalyst of table
Embodiment 2
ZSM-5 hydrophobic molecule sieve is immersed in certain density AgNO3With Mn (CH3COO)2Mixed solution in (manganese oxidation
Object loading is 1wt%, and the loading of Ag is 0.1wt%), 30min is stirred, after standing overnight, is dried to for 110 DEG C in baking oven
Constant weight.It is placed in Muffle furnace again in 500 DEG C of isolation air roasting 3h.Obtain the catalyst of load MnOx/Ag.
Embodiment 3
The cellular activated carbon catalyst that MnOx is loaded obtained in embodiment 1 is impregnated in certain density AgNO3Solution
In (loading of Ag be 0.1wt%), continuously stir or shake 8 hours, add the sodium borohydride solids of certain mass
(NaBH4/Ag+Molar ratio is 2:1), it continues at and shakes 1h on shaking table, obtained catalyst is finally placed in baking oven 110 DEG C
It dries to constant weight.Obtain the catalyst of load MnOx/Ag.
Claims (10)
1. a kind of honeycomb substrate catalyst, including honeycomb substrate and metallic catalyst, it is characterised in that: the honeycomb substrate includes
Zeolite molecular sieve, one of active carbon or a variety of.
2. honeycomb substrate catalyst as described in claim 1, it is characterised in that: the metallic catalyst is Fe2O3、Co2O、
NiO、CuO、ZnO、MnOx、Ag2O, one of Pt, Pd and Ag or a variety of.
3. honeycomb substrate catalyst as described in claim 1 or 2 is any, it is characterised in that: the load of the metallic catalyst
Amount is the 0.1%-2% of the honeycomb substrate quality.
4. the preparation method of honeycomb substrate catalyst as described in claim 1, which comprises the steps of:
By honeycomb substrate in metal salt solution, absorption is completed；
It washes with water, is then dried；
Sintering processes under inert environments；
It washes with water and dries again.
5. the preparation method of honeycomb substrate catalyst as claimed in claim 4, it is characterised in that: reduction is added after completing absorption
Property substance.
6. the preparation method of honeycomb substrate catalyst as claimed in claim 4, it is characterised in that: the metal salt include Fe,
The salt of Co, Ni, Cu, Zn, Mn, Ag, Pt and Pd.
7. the preparation method of honeycomb substrate catalyst as claimed in claim 4, it is characterised in that: the quality of the metal salt is dense
Degree is 0.5%-2%.
8. the preparation method of honeycomb substrate catalyst as claimed in claim 4, it is characterised in that: the temperature of the drying process
It is 80-120 DEG C；And/or
The inert environments include any one or more in nitrogen, argon gas and vacuum.
9. the preparation method of honeycomb substrate catalyst as claimed in claim 4, it is characterised in that: the temperature of the sintering processes
It is 300-500 DEG C.
10. application of the honeycomb substrate catalyst as described in claim 1 in degradation low-concentration organic exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196996.0A CN109821569A (en) | 2019-03-15 | 2019-03-15 | A kind of honeycomb substrate catalyst and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196996.0A CN109821569A (en) | 2019-03-15 | 2019-03-15 | A kind of honeycomb substrate catalyst and its preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109821569A true CN109821569A (en) | 2019-05-31 |
Family
ID=66870154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910196996.0A Pending CN109821569A (en) | 2019-03-15 | 2019-03-15 | A kind of honeycomb substrate catalyst and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109821569A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404557A (en) * | 2019-08-16 | 2019-11-05 | 昆明理工大学 | A kind of active carbon fibre Wiki catalyst and its preparation method and application |
| CN110975880A (en) * | 2019-12-19 | 2020-04-10 | 华南师范大学 | Composite catalyst for degrading kitchen waste and preparation method and application thereof |
| CN112410037A (en) * | 2020-10-15 | 2021-02-26 | 南京工业大学 | Composite functional material for soil pollution treatment and preparation method thereof |
| CN114749178A (en) * | 2022-05-13 | 2022-07-15 | 集美大学 | Method for preparing catering oil fume purification treatment catalyst by using crab shells and application of catalyst |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19801840A1 (en) * | 1998-01-13 | 1999-07-15 | Inst Umwelttechnologien Gmbh | Catalyst for plasma-chemical waste air cleaning |
| CN101391177A (en) * | 2007-09-18 | 2009-03-25 | 杰智环境科技股份有限公司 | Gas purification method of low concentration organic compound |
| CN102476029A (en) * | 2010-11-29 | 2012-05-30 | 杰智环境科技股份有限公司 | Catalyst-containing purifying apparatus used for processing organic waste gas |
| US20160045866A1 (en) * | 2014-08-15 | 2016-02-18 | National Chung Shan Institute Of Science And Technology | Device of deodorizing and minimizing voc in exhaust gas with photocatalyst |
| CN106247355A (en) * | 2016-09-22 | 2016-12-21 | 北京市环境卫生设计科学研究所 | A kind of high concentration foul gas catalytic oxidation deodorizing equipment and deodorizing method thereof |
| CN107469814A (en) * | 2017-09-27 | 2017-12-15 | 武汉千瑞泰环境科技有限公司 | A kind of catalyst for purifying organic waste gas and its preparation method |
-
2019
- 2019-03-15 CN CN201910196996.0A patent/CN109821569A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19801840A1 (en) * | 1998-01-13 | 1999-07-15 | Inst Umwelttechnologien Gmbh | Catalyst for plasma-chemical waste air cleaning |
| CN101391177A (en) * | 2007-09-18 | 2009-03-25 | 杰智环境科技股份有限公司 | Gas purification method of low concentration organic compound |
| CN102476029A (en) * | 2010-11-29 | 2012-05-30 | 杰智环境科技股份有限公司 | Catalyst-containing purifying apparatus used for processing organic waste gas |
| US20160045866A1 (en) * | 2014-08-15 | 2016-02-18 | National Chung Shan Institute Of Science And Technology | Device of deodorizing and minimizing voc in exhaust gas with photocatalyst |
| CN106247355A (en) * | 2016-09-22 | 2016-12-21 | 北京市环境卫生设计科学研究所 | A kind of high concentration foul gas catalytic oxidation deodorizing equipment and deodorizing method thereof |
| CN107469814A (en) * | 2017-09-27 | 2017-12-15 | 武汉千瑞泰环境科技有限公司 | A kind of catalyst for purifying organic waste gas and its preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 刘阳等: ""室温AgMn/HZSM-5催化剂上臭氧催化氧化吸附态的苯"", 《第十六届全国等离子体科学技术会议暨第一届全国等离子体一月研讨会会议摘要》 * |
| 尾崎 萃等: "《催化剂手册》", 30 April 1982 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404557A (en) * | 2019-08-16 | 2019-11-05 | 昆明理工大学 | A kind of active carbon fibre Wiki catalyst and its preparation method and application |
| CN110975880A (en) * | 2019-12-19 | 2020-04-10 | 华南师范大学 | Composite catalyst for degrading kitchen waste and preparation method and application thereof |
| CN110975880B (en) * | 2019-12-19 | 2022-10-04 | 华南师范大学 | Composite catalyst for degrading kitchen waste and preparation method and application thereof |
| CN112410037A (en) * | 2020-10-15 | 2021-02-26 | 南京工业大学 | Composite functional material for soil pollution treatment and preparation method thereof |
| CN114749178A (en) * | 2022-05-13 | 2022-07-15 | 集美大学 | Method for preparing catering oil fume purification treatment catalyst by using crab shells and application of catalyst |
| CN114749178B (en) * | 2022-05-13 | 2023-11-24 | 集美大学 | Method for preparing catering oil smoke purifying catalyst by using crab shells and application of catalyst |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109821569A (en) | A kind of honeycomb substrate catalyst and its preparation method and application | |
| Zeng et al. | Removal of NO by carbonaceous materials at room temperature: A review | |
| CN102049256A (en) | Waste water treatment catalyst and preparation method thereof | |
| CN101695651B (en) | Copper and iron-loaded modified activated carbon absorbent and method for preparing same | |
| CN109772463B (en) | Catalyst ZIF-67-Me/CuO for CO reduction and low-temperature denitrationxAnd preparation method and application thereof | |
| CN104084217B (en) | Catalyst that a kind of ammonia nitrogen waste water CWO is processed and preparation method thereof | |
| CN102407154A (en) | Molecular sieve coating load manganese based composite oxide integrated catalyst and preparation method thereof | |
| CN112473728B (en) | Efficient moisture-resistant ozonolysis catalyst and preparation method and application thereof | |
| CN109762614B (en) | Cobaltosic oxide catalyst for methane catalytic combustion, preparation and application thereof | |
| CN113603087A (en) | Nitrogen-rich biomass-based activated carbon with hierarchical pore microchannel structure and application thereof | |
| CN112316946A (en) | Low-temperature CO-SCR denitration Cu-Ni/AC catalyst and preparation method thereof | |
| CN113713608A (en) | For CO and NOxSimultaneous removal catalyst combination | |
| CN112403488A (en) | Low-sulfur-resistant low-temperature carbon-based denitration catalyst and preparation method and application thereof | |
| US20220387982A1 (en) | Catalyst capable of simultaneously removing cos and h2s in garbage gasification and preparation method thereof | |
| CN112892534A (en) | MO for VOC purificationx/CuxPreparation of O/Cu photocatalyst | |
| CN111203179A (en) | Preparation method and application of renewable phenol-containing organic wastewater catalytic adsorption material | |
| CN113213480A (en) | Method for preparing bamboo activated carbon by one-step method | |
| CN116212853B (en) | δ-MnO 2 Catalytic material, preparation method thereof and application of catalytic material in preparation of filter screen capable of degrading formaldehyde | |
| CN101564683A (en) | Method for preparing transitional metal ion copper modified adsorbent for purifying low-concentration phosphine | |
| CN108722352B (en) | Macroporous carbon-based material for adsorbing environmental carbon monoxide and preparation method thereof | |
| CN114042448B (en) | Preparation method and application of Mn-MOF-based two-dimensional sheet manganese oxide/mesoporous carbon catalyst | |
| KR101109483B1 (en) | Supported catalyst for removing nitrogen oxides, method for preparing the same and method for removing nitrogen oxides using the same | |
| CN109865518A (en) | A kind of method for preparing catalyst for micro-wave nonpolar light catalytic purifying VOC | |
| CN114602446A (en) | Catalyst for UV/persulfate process and preparation method and application thereof | |
| CN114471695A (en) | Catalyst capable of efficiently degrading cyanogen-containing waste gas and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190531 |
|
| RJ01 | Rejection of invention patent application after publication |