CN106807363B - A kind of manganese systems supported titanium doping nano-tube SCR catalyst and preparation method thereof - Google Patents

A kind of manganese systems supported titanium doping nano-tube SCR catalyst and preparation method thereof Download PDF

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CN106807363B
CN106807363B CN201710165015.7A CN201710165015A CN106807363B CN 106807363 B CN106807363 B CN 106807363B CN 201710165015 A CN201710165015 A CN 201710165015A CN 106807363 B CN106807363 B CN 106807363B
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陈若愚
叶永洲
王洪宁
钟璟
刘小华
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Changzhou University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • 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
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Abstract

The invention belongs to catalyst for denitrating flue gas preparation field, in particular to a kind of manganese systems supported titanium doping nano-tube SCR catalyst and preparation method thereof.Using titanium doped nano-tube as carrier, it is carried on titanium doped nano-tube by active material of Mn oxide, manganese systems supported titanium is made and adulterates nano-tube SCR catalyst.The invention also discloses the synthetic methods of above-mentioned titanium doped nano-tube carrier.Nano-tube has biggish specific surface area, active material is improved significantly in the dispersibility of carrier surface, titanium doped nano-tube provides more acidic site when being catalyzed reaction, reactivity site increases, the reduction temperature for reducing catalyst makes catalyst have good low temperature active and stability.Titanium doped nano-tube exists as a kind of active carrier, facilitates the progress of catalysis reaction, widens the active temperature windows of its selective catalytic reduction.

Description

A kind of manganese systems supported titanium doping nano-tube SCR catalyst and preparation method thereof
Technical field
The invention belongs to catalyst for denitrating flue gas preparation field, in particular to a kind of manganese systems supported titanium adulterates nano-tube SCR catalyst and preparation method thereof.
Background technique
In recent years, steam power plant, the gas of steel, power generation, steam power plant, diesel vehicle discharge contains a large amount of nitrogen oxidation Object causes very big pollution to environment, although the use of diesel engine increases fuel economy and reduces the row of carbonaceous material Put (CO, CO2With hydrocarbon etc.), but significantly increase NOxDischarge, if do not administered will will appear acid rain and Photochemical fog endangers the daily life of the mankind.
Denitrating catalyst is since the demand of practical application has become a hot topic of research, the pass by more and more people in recent years It infuses, National IP Network's data bank discovery in retrieval, that delivers since two thousand is up to 1184 about the large rich paper of denitration Chinese, closes 2070 are up in denitration patent of invention.Denitrating catalyst research has three-way catalyst, there are also loaded catalyst, traditional three Effect catalyst has been unable to satisfy actual needs, in SCR catalyst research based on loaded catalyst.SCR (selective catalysis Reduction technique) refer to by adding reducing agent, react reducing agent with the oxynitrides in exhaust gas under the effect of the catalyst And it is made to be reduced to N2Catalytic process, catalytic process generallys use NH3, urea, various hydro carbons and alcohols be as reducing agent.
The widely used carrier of SCR catalyst is Si-Al molecular sieve, carbon nanotube, single TiO2, carrier itself do not have Have a catalytic activity, while dust is easy blocking catalyst, lead to problems such as its service life low and active constituent dispersion is bad, for a long time with Come that carrier catalysis active site is few, leads to that the low temperature active of catalyst is low, stability is poor and denitration efficiency is not high.Therefore SCR catalyst denitration effect is bad at present, it is necessary to develop a kind of new catalyst, change to traditional SCR catalyst Into to adapt to demand of the people to ecological environment.Nano-tube has been used as the carrier of catalyst to use in the prior art, but does not have The titanium doped nano-tube of relevant report is used for the report of SCR catalyst carrier.Doped chemical enters in carrier framework, becomes bone A part of frame structure can change the structure of original skeleton, need to carry out a large amount of experimental exploration.
Summary of the invention
The purpose of the present invention: traditional SCR catalyst there are aiming at the problem that, a kind of manganese systems supported titanium doped silicon is provided and is received Mitron SCR catalyst and preparation method thereof, so that carrier is provided with catalytic activity, improves SCR catalysis by adulterating titanium elements The denitration effect of agent.
Technical solution of the present invention: a kind of manganese systems supported titanium doping nano-tube SCR catalyst is provided, is received with titanium doped silicon Mitron is carried on titanium doped nano-tube as carrier, by active material of Mn oxide, and manganese systems supported titanium doped silicon is made and receives Mitron SCR catalyst.Provide the preparation method of this manganese systems supported titanium doping nano-tube SCR catalyst, concrete operations Step includes:
1) 1.00g F127 template is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；By metatitanic acid four Butyl ester and 2.8g tetraethyl orthosilicate are sufficiently mixed in 3ml toluene, are denoted as solution B；Solution B is slowly added dropwise in solution A, It is stirred for 24 hours under the conditions of 10~15 DEG C, 240~260rpm, is denoted as solution C；
2) solution C prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 50~70 DEG C；5~7h is roasted under the conditions of 320~380 DEG C to remove mould Titanium doped nano-tube is made in plate agent；
3) sodium hydroxide of 0.1mol/L is added dropwise to MnCl2In solution, until be centrifuged gained sediment when pH=8, Washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and dodecyl sodium sulfate is added, and adjusts body The pH of system is 7, and hydrated manganese colloidal sol is made；
4) it is immersed made from step 3) at 50 DEG C and by titanium doped nano-tube made from step 2) under lasting stirring condition In hydrated manganese colloidal sol, continues to stir 48h, obtain manganese colloidal sol/titanium doped nano-tube compound system；
5) triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 4), obtains Manganese gel/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；Under the conditions of 350 DEG C 2h is roasted, manganese systems supported titanium doping nano-tube SCR catalyst is obtained.Wherein, manganese systems Mn2O3、Mn3O4And MnO2, MnO2For Noncrystalline state.
Preferably, butyl titanate quality is that 0.2287g, 0.3049g, 0.4574g or 0.9148g are (right in step 1) The silicon atom and titanium atom molar ratio answered are respectively 20,15,10 or 5).
Preferably, drying temperature is 55~60 DEG C in step 2)；Maturing temperature is 340~360 DEG C in step 2).
Preferably, calcining time is 6h in step 2).
Manganese systems supported titanium doping nano-tube SCR catalyst prepared by the present invention is used for SCR denitration reaction.
Technical effect of the invention: using Mn oxide as active constituent, wherein the MnO containing amorphous2With the manganese of crystallization Oxide, due to MnO2There are more Lacking oxygen and biggish specific surface area, MnO2Show higher low temperature active, activity by High to Low sequence are as follows: MnO2>Mn3O4>Mn2O3.Simultaneously using Mn oxide as active constituent, be conducive to introduce and discharge proton, It can be conducive to the work for improving SCR catalyst with the chemisorption/desorption and redox of this phase of accelerator activator and surface Property.Nano-tube is not a kind of active carrier, and titanium doped nano-tube carrier can be used as a kind of active carrier use, is reduced The reduction temperature of catalyst makes catalyst have good low temperature active and stability, while it is with biggish specific surface Product, gap is flourishing, and adsorption capacity is strong, is conducive to Mn oxide and disperses in carrier surface, hence it is evident that improves the reunion effect of active component It answers, two kinds act on the activity for improving SCR catalyst jointly.The test of SCR reactivity is carried out to catalyst prepared by the present invention, The result shows that optimal reaction temperature window is 150~350 DEG C.The catalyst alternative removes the row such as thermal power plant, steam power plant The nitrogen oxides in flue gas is put, effect is obvious.
Detailed description of the invention
In the present invention, SNT indicates that nano-tube, Mn-SNT indicate that manganese systems load nano-tube SCR catalyst, TSNT-X Indicate that the titanium doped nano-tube of different silicon titanium molar ratios, the titanium that Mn-TSNT-X expression manganese systems load different silicon titanium molar ratios are mixed Miscellaneous nano-tube SCR catalyst, X are molar ratio of the silicon relative to titanium.
Fig. 1 be Examples 1 to 4 preparation titanium doped nano-tube TSNT-X transmission electron microscope spectrogram, as shown in Figure 1, when X >= It is able to maintain good tubular morphology when 10, good tubular morphology cannot be formed as X≤5.
The nano-tube that Fig. 2 is the titanium doped nano-tube TSNT-X of Examples 1 to 4 preparation and prepared by comparative example 1 SNT solid uv atlas, as shown in Figure 2, titanium elements have adulterated and have been embedded into nano-tube skeleton.
Fig. 3 is that the manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-X of Examples 1 to 4 preparation and comparison are implemented Manganese systems prepared by example 1 load nano-tube catalyst Mn-SNT catalytic performance figure, from the figure 3, it may be seen that when X is 15, manganese systems load Titanium doped nano-tube has optimal catalytic performance, and titanium doped nano-tube is improved significantly relative to nano-tube and urged The catalytic performance of agent.It is as follows that the catalyst catalytic performance of preparation investigates process: using opaque fixed bed catalyst performance Assessing reactor is evaluated, and after mixing by the quartz sand of 500mg catalyst and 2g, is filled into the quartz that internal diameter is 1cm In pipe reactor, it is ensured that reaction gas is smooth to be passed through, and is 36000h by the air speed (GHSV) that mass flowmenter controls gas-1, Heating and computer heating control are carried out using tube furnace, heating rate is 5 DEG C/min, and denitration reaction occurs under the conditions of 400 DEG C, former Expect the NO in gas and tail gasxIt is measured by on-line gas analysis instrument, wherein reaction gas group becomes 8% O2, 600ppm NO, The NH of 600ppm3, 5%H2O and balanced gas N2。NOxConversion ratio calculation formula are as follows: η=(C1- C0)/C1× 100%, in formula, η For the conversion ratio of oxynitrides, C1Indicate NOxConcentration before reaction, C0Indicate NOxConcentration after reaction.
Specific embodiment
Embodiment 1
The preparation of titanium doped nano-tube TSNT-5:
1) 1.00g F127 is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；(just by 2.8g TEOS Tetraethyl orthosilicate) and 0.9148g butyl titanate be sufficiently mixed in 3ml toluene, be denoted as solution B；Solution B is slowly added dropwise In solution A, stirred for 24 hours under the conditions of 11 DEG C, 250rpm；
2) solution prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 60 DEG C；6h is roasted under the conditions of 350 DEG C to remove template, obtained titanium is mixed Miscellaneous nano-tube TSNT-5.
The preparation of manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-5:
1) sodium hydroxide of 0.1mol/L is added dropwise to 0.1080g MnCl2In the 100ml solution of configuration, until pH=8 When by gained sediment centrifugation, washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and is added ten Dialkyl sulfonates, the pH of regulation system are 7, obtain hydrated manganese colloidal sol；
2) hydrated manganese colloidal sol made from step 1) is immersed at 50 DEG C and by the titanium doped nano-tube of 1g under lasting stirring condition In, continue to stir 48h, obtains manganese colloidal sol/titanium doped nano-tube compound system；
3) 2g triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 2), obtains To manganese gel/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；350 DEG C of conditions Lower roasting 2h obtains manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-5.
Embodiment 2
The preparation of titanium doped nano-tube TSNT-10:
1) 1.00g F127 is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；(just by 2.8g TEOS Tetraethyl orthosilicate) and 0.4574g butyl titanate be sufficiently mixed in 3ml toluene, be denoted as solution B；Solution B is slowly added dropwise In solution A, stirred for 24 hours under the conditions of 11 DEG C, 250rpm；
2) solution prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 60 DEG C；6h is roasted under the conditions of 350 DEG C to remove template, obtained titanium is mixed Miscellaneous nano-tube TSNT-10.
The preparation of manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-10:
1) sodium hydroxide of 0.1mol/L is added dropwise to 0.1080g MnCl2In the 100ml solution of configuration, until pH=8 When by gained sediment centrifugation, washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and is added ten Dialkyl sulfonates, the pH of regulation system are 7, obtain hydrated manganese colloidal sol；
2) hydrated manganese colloidal sol made from step 1) is immersed at 50 DEG C and by the titanium doped nano-tube of 1g under lasting stirring condition In, continue to stir 48h, obtains manganese colloidal sol/titanium doped nano-tube compound system；
3) 2g triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 2), obtains To manganese gel/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；350 DEG C of conditions Lower roasting 2h obtains manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-10.
Embodiment 3
The preparation of titanium doped nano-tube TSNT-15:
1) 1.00g F127 is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；(just by 2.8g TEOS Tetraethyl orthosilicate) and 0.3431g butyl titanate be sufficiently mixed in 3ml toluene, be denoted as solution B；Solution B is slowly added dropwise In solution A, stirred for 24 hours under the conditions of 11 DEG C, 250rpm；
2) solution prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 60 DEG C；6h is roasted under the conditions of 350 DEG C to remove template, obtained titanium is mixed Miscellaneous nano-tube TSNT-15.
The preparation of manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-15:
1) sodium hydroxide of 0.1mol/L is added dropwise to 0.1080g MnCl2In the 100ml solution of configuration, until pH=8 When by gained sediment centrifugation, washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and is added ten Dialkyl sulfonates, the pH of regulation system are 7, obtain hydrated manganese colloidal sol；
2) hydrated manganese colloidal sol made from step 1) is immersed at 50 DEG C and by the titanium doped nano-tube of 1g under lasting stirring condition In, continue to stir 48h, obtains manganese colloidal sol/titanium doped nano-tube compound system；
3) 2g triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 2), obtains To manganese gel/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；350 DEG C of conditions Lower roasting 2h obtains manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-15.
Embodiment 4
The preparation of titanium doped nano-tube TSNT-20:
1) 1.00g F127 is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；(just by 2.8g TEOS Tetraethyl orthosilicate) and 0.2287g butyl titanate be sufficiently mixed in 3ml toluene, be denoted as solution B；Solution B is slowly added dropwise In solution A, stirred for 24 hours under the conditions of 11 DEG C, 250rpm；
2) solution prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 60 DEG C；6h is roasted under the conditions of 350 DEG C to remove template, obtained titanium is mixed Miscellaneous nano-tube TSNT-20.
The preparation of manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-20:
1) sodium hydroxide of 0.1mol/L is added dropwise to 0.1080g MnCl2In the 100ml solution of configuration, until pH=8 When by gained sediment centrifugation, washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and is added ten Dialkyl sulfonates, the pH of regulation system are 7, obtain hydrated manganese colloidal sol；
2) hydrated manganese colloidal sol made from step 1) is immersed at 50 DEG C and by the titanium doped nano-tube of 1g under lasting stirring condition In, continue to stir 48h, obtains manganese colloidal sol/titanium doped nano-tube compound system；
3) 2g triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 2), obtains To manganese gel/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；350 DEG C of conditions Lower roasting 2h obtains manganese systems supported titanium doped silicon nano tube catalyst Mn-TSNT-20.
Comparative example 1
The preparation of nano-tube SNT:
1) 1.00g F127 is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；(just by 2.8g TEOS Tetraethyl orthosilicate) it is sufficiently mixed in 3ml toluene, it is denoted as solution B；Solution B is slowly added dropwise in solution A, 11 DEG C, It is stirred for 24 hours under the conditions of 250rpm；
2) solution prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to Room temperature, filtering and washing, vacuum drying is to drying under the conditions of 60 DEG C；6h is roasted under the conditions of 350 DEG C to remove template, obtained silicon is received Mitron SNT.
The preparation of manganese systems load nano-tube catalyst Mn-SNT:
1) sodium hydroxide of 0.1mol/L is added dropwise to 0.1080g MnCl2In the 100ml solution of configuration, until pH=8 When by gained sediment centrifugation, washing, to remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and is added ten Dialkyl sulfonates, the pH of regulation system are 7, obtain hydrated manganese colloidal sol；
2) 1g nano-tube is immersed in hydrated manganese colloidal sol made from step 1) at 50 DEG C and under lasting stirring condition, is continued 48h is stirred, manganese colloidal sol/nano-tube compound system is obtained；
3) 2g triethylamine gelling agent is added in the manganese colloidal sol/nano-tube compound system prepared to step 2), it is solidifying obtains manganese Glue/nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；2h is roasted under the conditions of 350 DEG C, is obtained Manganese systems load nano-tube catalyst Mn-SNT.

Claims (5)

1. a kind of preparation method of manganese systems supported titanium doping nano-tube SCR catalyst, which is characterized in that the preparation method Using titanium doped nano-tube as carrier, to be carried on titanium doped nano-tube by active material of Mn oxide, manganese systems being made Supported titanium adulterates nano-tube SCR catalyst；
Preparation method specifically includes:
1) 1.00g F127 template is dissolved in 60ml 2M HCl and 6h is sufficiently stirred, be denoted as solution A；By butyl titanate It is sufficiently mixed in 3ml toluene with 2.8g tetraethyl orthosilicate, is denoted as solution B；Solution B is slowly added dropwise in solution A, 10 ~15 DEG C, stir for 24 hours under the conditions of 240~260rpm, be denoted as solution C；
2) solution C prepared by step 1) is transferred to hydrothermal reaction kettle, hydro-thermal reaction is for 24 hours under the conditions of 100 DEG C；It is cooled to room Temperature, filtering and washing, vacuum drying is to drying under the conditions of 50~70 DEG C；5~7h is roasted under the conditions of 320~380 DEG C to remove template Titanium doped nano-tube is made in agent；
3) sodium hydroxide of 0.1mol/L is added dropwise to MnCl2In solution, until be centrifuged gained sediment when pH=8, washing, To remove Cl-And Na+Equal impurity, the sediment after washing is dispersed in water, and dodecyl sodium sulfate is added, regulation system PH is 7, and hydrated manganese colloidal sol is made；
4) titanium doped nano-tube made from step 2) is immersed into step 3) hydration obtained at 50 DEG C and under lasting stirring condition In manganese colloidal sol, continues to stir 48h, obtain manganese colloidal sol/titanium doped nano-tube compound system；
5) triethylamine gelling agent is added in the manganese colloidal sol/titanium doped nano-tube compound system prepared to step 4), it is solidifying obtains manganese Glue/titanium doped nano-tube compound system；It is washed repeatedly with distilled water, dry 12h under the conditions of 50 DEG C；It is roasted under the conditions of 350 DEG C 2h obtains manganese systems supported titanium doping nano-tube SCR catalyst.
2. the preparation method of manganese systems supported titanium doping nano-tube SCR catalyst as described in claim 1, which is characterized in that Butyl titanate quality is 0.2287g, 0.3049g or 0.4574g in step 1).
3. the preparation method of manganese systems supported titanium doping nano-tube SCR catalyst as described in claim 1, which is characterized in that Drying temperature is 55~60 DEG C in step 2)；Maturing temperature is 340~360 DEG C in step 2).
4. the preparation method of manganese systems supported titanium doping nano-tube SCR catalyst as described in claim 1, which is characterized in that Calcining time is 6h in step 2).
5. a kind of purposes of the manganese systems supported titanium doping nano-tube SCR catalyst of method preparation as described in claim 1, special Sign is that the catalyst is used for SCR denitration reaction.
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