CN106040260A - Catalyst for catalytic oxidation of carbonic oxide and preparation method of catalyst - Google Patents

Catalyst for catalytic oxidation of carbonic oxide and preparation method of catalyst Download PDF

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CN106040260A
CN106040260A CN201610517345.3A CN201610517345A CN106040260A CN 106040260 A CN106040260 A CN 106040260A CN 201610517345 A CN201610517345 A CN 201610517345A CN 106040260 A CN106040260 A CN 106040260A
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CN106040260B (en
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罗孟飞
邓芸
贾爱平
鲁继青
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Zhejiang Normal University CJNU
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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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8993—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with chromium, molybdenum or tungsten
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    • 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
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • B01J23/6522—Chromium
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/502—Carbon monoxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

The invention provides a catalyst for catalytic oxidation of carbonic oxide and a preparation method of the catalyst. The catalyst consists of an MO-MCr2O4 bimetallic oxides carrier and a ZrO2 and precious metal Pt double-component active species, wherein M is Cu, Ni or Zn, the molar ratio of M and Cr is 1:1, the mass percentage of ZrO2 is 5%, and the mass percentage of Pt is 0.5-2%. The catalyst is prepared by an incipient-wetness impregnation method. The activity of the catalyst in an actual reaction atmosphere containing water vapor and carbon dioxide is high.

Description

A kind of catalyst for catalyzing carbon monoxide oxidation and preparation method thereof
Technical field
The present invention relates to a kind of chemical catalyst, particularly to a kind of catalyst for catalyzing carbon monoxide oxidation and Preparation method.
Background technology
CO is the most flammable, toxic gas, is one of most commonly seen gaseous contaminant, result from combustion of fossil fuel, The field such as chemical industry and motor vehicles.Carbon monoxide invades body, quickly will be combined into the blood red egg of carbon oxygen with hemoglobin In vain, thus hinder oxygen and hemoglobin to be combined into HbO2 Oxyhemoglobin.Poisoner arises that weak pulse, breathes slack-off, finally declines Exhaust lethal.It addition, in Proton Exchange Membrane Fuel Cells hydrogen production process, CO a small amount of in methanol reformed gas easily adsorbs at fuel electricity Pond anode catalyst surface, makes battery performance degradation, it is necessary to be removed the CO in reformed gas, therefore selectivity oxygen Change the focus that the CO in removing reformation gas is research equally.
Low temperature CO eliminates all has the highest practical value at a lot of aspects, as at air cleaning, closed-circulation CO2 The aspects such as the CO elimination in laser instrument, CO gas sensor, the control of vehicle exhaust, CO canister respirator and closed system.Mesh Before, the research about CO oxidation catalyst is concentrated mainly on the catalysis such as preparation technology, optimizing components, additive modification, carrier modulation The influence factor of performance, the structure activity relationship of catalyst and CO are catalyzed the aspects such as oxidation mechanism.But in real reaction atmosphere There is other gas componant (such as steam and carbon dioxide) unavoidably, there is the reactivity to catalyst and produces important shadow in it Ring.The oxide of such as manganese and copper is used for CO oxidation reaction, at H2Can drastically inactivate under O (steam) environment C.Yoon, D.L.Cocke,Journal of Catalysis,1988,113(2):267-280}.Proton Exchange Membrane Fuel Cells hydrogen manufacturing Journey exists CO2And H2O, obtain identical CO conversion ratio reaction temperature need improve 30-50 DEG C C.M.Bae, J.B.Ko, D.H.Kim,Catalysis Communications,2005,6(8):507-511}.About Au/TiO2、Au/Al2O3、Au/ SiO2The influence research that on catalyst, CO is aoxidized by steam, finds that moisture content drops to 0.6% from 10%, and CO catalysis can be made to live Property improve 2 number magnitude, it is seen that substantial amounts of steam exists the reactivity of catalyst is also existed inhibitory action {M.Date,M.Okumura,S.Tsubota,et al.,Angewandte Chemie International Edition, 2004,43(16):2129-2132}.In the range of 160-200 DEG C, mol ratio is Ag/Co and the Ag/Mn catalyst of 1:1 and exists H2O and CO2In the presence of, the activity of two kinds of catalyst is all significantly reduced { C.G ü ld ü r, F.Balikci, International Journal of Hydrogen Energy,2002,27(2):219-224}。
Catalyst used by carbon monoxide elimination mainly has noble metal catalyst and non-precious metal catalyst, and noble metal is with it Good CO, O2Absorption and activity function are considered as the first-selected catalyst of catalysis CO complete oxidation.Pt-oxide at low temperatures Interface COadsWith OHadsReaction activity is less than COadsAnd OadsReaction activity and produce CO2{L.S.Xu,Y.S.Ma, Y.L.Zhang,et al.,Journal of the American Chemical Society,2009,131(45):16366- 16367}.Therefore, precious metal based catalysts is at H2O and CO2There is stronger researching value in CO oxidation field in environment.
Catalyst structure change and catalytic performance of causing in the presence of steam and carbon dioxide affect the research of aspect Also lacking systematicness, the exploitation to high-performance water vapor and the catalyst of carbon dioxide brings difficulty.Therefore, research is truly Under reaction condition (especially steam and carbon dioxide in the presence of), the relation between architectural characteristic and the reactivity worth of catalyst is outstanding It is important, can be that the design of effective catalyst provides well reference.
To this end, this patent combines MO-MCr2O4(M=Cu, Ni, Zn), ZrO2With the characteristic of Pt, use equi-volume impregnating Prepare a kind of high-performance water vapor and the Pt/ZrO of carbon dioxide2/MO-MCr2O4Catalyst.
Summary of the invention
The technical problem to be solved in the present invention is containing steam and two for existing Carbon monoxide catalytic oxidation catalyst The problem that in the real reaction atmosphere of carbonoxide, activity is low, it is provided that a kind of high performance catalyst for catalyzing carbon monoxide oxidation And preparation method thereof.
For solving this technical problem, the technical solution used in the present invention is:
A kind of catalyst for catalyzing carbon monoxide oxidation, it is characterised in that: this catalyst is by MO-MCr2O4Bimetallic Oxide carrier, ZrO2Forming with precious metals pt double-component active specy, wherein M is Cu, Ni or Zn, M Yu Cr mol ratio is 1: 1, ZrO2Weight/mass percentage composition be 5%, the weight/mass percentage composition of Pt is 0.5-2%.
The preparation method of this catalyst is: use equi-volume impregnating to prepare, with MO-MCr2O4Bimetallic oxide is for carrying Body load ZrO2With precious metals pt catalyst, prepare, initially with sol-gal process, the MO-MCr that M Yu Cr mol ratio is 1:12O4Double Component carrier, then at MO-MCr2O4The ZrO of supported on carriers 5wt%2Obtain ZrO2/MO-MCr2O4, finally at ZrO2/MO- MCr2O4The precious metals pt of upper load 0.5-2wt%, obtains Pt/ZrO2/MO-MCr2O4Catalyst.
Specifically include following steps:
(1) by M (NO3)2·xH2O、Cr(NO3)3·9H2O and citric acid are dissolved in deionized water, after being completely dissolved, and then 90 DEG C stirring in water bath is to gel state, and then 120 DEG C are dried 8 hours, and roasting 4h under last 600 DEG C of air atmospheres obtains MO- MCr2O4Powder, x is 3 or 6.Wherein Cr and part M define MCr through solid state reaction2O4, remaining M forms MO, obtains MO And MCr2O4Mixture, i.e. MO-MCr2O4Powder.Wherein M (NO3)2·xH2O【Cu(NO3)2·3H2O、Ni(NO3)2·6H2O or Zn(NO3)2·6H2O】、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:1:2.
(2) by ZrO (NO3)2·2H2O is dissolved in deionized water, after being completely dissolved, adds MO-MCr2O4In powder, equal-volume Dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/MO- MCr2O4Powder.Wherein ZrO2At ZrO2/MO-MCr2O4The weight/mass percentage composition of powder is 5%.
(3) by Pt (NO3)2Solution adds ZrO2/MO-MCr2O4In powder, incipient impregnation 5h, then 90 DEG C of water-baths are fried Dry, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/MO-MCr2O4Catalyst.Wherein Pt At Pt/ZrO2/MO-MCr2O4Weight/mass percentage composition in catalyst is 0.5-2%.
The catalyst prepared in aforementioned manners, it is by MO-MCr2O4Bimetallic oxide carrier, ZrO2Double with precious metals pt Composition Active species combine, it is possible to the carbon monoxide of high-performance water vapor and carbon dioxide that catalyst is significantly increased disappears Except activity and stability.
Detailed description of the invention
Below in conjunction with embodiment the present invention made and further illustrating, but the present invention is not limited to these implements Example.
Embodiment 1
(1) according to Cu (NO3)2·3H2O、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:1:2, by 16.38g Cu (NO3)2·3H2O、27.12g Cr(NO3)3·9H2O and 28.50g citric acid is dissolved in 200mL deionized water, and mixed solution is 90 DEG C stirring in water bath is to gel state, and then 120 DEG C are dried 8 hours, roasting 4h under last 600 DEG C of air atmospheres.Wherein Cr and portion Cu is divided to define CuCr through solid state reaction2O4, remaining Cu forms CuO, obtains CuO and CuCr2O4Mixture, i.e. CuO- CuCr2O4Powder.
(2) according to ZrO2At ZrO2/CuO-CuCr2O4Weight/mass percentage composition in powder is 5%, by 1.08g ZrO (NO3)2·2H2O is dissolved in 20mL deionized water, then by ZrO (NO3)2Aqueous solution adds 9.5g CuO-CuCr2O4In powder, Dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/CuO- CuCr2O4Powder.
(3) according to Pt at Pt/ZrO2/CuO-CuCr2O4Weight/mass percentage composition in catalyst is 2%, will be containing 0.2g Pt (the NO of Pt3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g ZrO2/CuO-CuCr2O4In powder, dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/CuO- CuCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 1.
Embodiment 2
(1) according to Ni (NO3)2·6H2O、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:1:2, by 20.38g Ni (NO3)2·6H2O、28.04g Cr(NO3)3·9H2O and 29.45g citric acid is dissolved in 200mL deionized water, and mixed solution is 90 DEG C stirring in water bath is to gel state, and then 120 DEG C are dried 8 hours, roasting 4h under last 600 DEG C of air atmospheres.Wherein Cr and portion Ni is divided to define NiCr through solid state reaction2O4, remaining Ni forms NiO, obtains NiO and NiCr2O4Mixture, i.e. NiO- NiCr2O4Powder.
(2) according to ZrO2At ZrO2/NiO-NiCr2O4Weight/mass percentage composition in powder is 5%, by 1.08g ZrO (NO3)2·2H2O is dissolved in 20mL deionized water, then by ZrO (NO3)2Aqueous solution adds 9.5g NiO-NiCr2O4In powder, Dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/NiO- NiCr2O4Powder.
(3) according to Pt at Pt/ZrO2/NiO-NiCr2O4Weight/mass percentage composition in catalyst is 2%, will be containing 0.2g Pt (the NO of Pt3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g ZrO2/NiO-NiCr2O4In powder, dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/NiO- NiCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 1.
Embodiment 3
(1) according to Zn (NO3)2·6H2O、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:1:2, by 19.91g Zn (NO3)2·6H2O、26.79g Cr(NO3)3·9H2O and 28.13g citric acid is dissolved in 200mL deionized water, and mixed solution is 90 DEG C stirring in water bath is to gel state, and then 120 DEG C are dried 8 hours, roasting 4h under last 600 DEG C of air atmospheres.Wherein Cr and portion Zn is divided to define ZnCr through solid state reaction2O4, remaining Zn forms ZnO, obtains ZnO and ZnCr2O4Mixture, i.e. ZnO- ZnCr2O4Powder.
(2) according to ZrO2At ZrO2/ZnO-ZnCr2O4Weight/mass percentage composition in powder is 5%, by 1.08g ZrO (NO3)2·2H2O is dissolved in 20mL deionized water, then by ZrO (NO3)2Aqueous solution adds 9.5g ZnO-ZnCr2O4In powder, Dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/ZnO- ZnCr2O4Powder.
(3) according to Pt at Pt/ZrO2/ZnO-ZnCr2O4Weight/mass percentage composition in catalyst is 2%, will be containing 0.2g Pt (the NO of Pt3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g ZrO2/ZnO-ZnCr2O4In powder, dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/ZnO- ZnCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 1.
Embodiment 4
(1)CuO-CuCr2O4The preparation method of powder is same as in Example 1.
(2)ZrO2/CuO-CuCr2O4The preparation method of powder is same as in Example 1.
(3) according to Pt at Pt/ZrO2/CuO-CuCr2O4Weight/mass percentage composition in catalyst is 0.5%, will contain Pt (the NO of 0.05g Pt3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.95g ZrO2/CuO-CuCr2O4Powder In, impregnate 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ ZrO2/CuO-CuCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 1.
Embodiment 5
(1)CuO-CuCr2O4The preparation method of powder is same as in Example 1.
(2)ZrO2/CuO-CuCr2O4The preparation method of powder is same as in Example 1.
(3) according to Pt at Pt/ZrO2/CuO-CuCr2O4Weight/mass percentage composition in catalyst is 1%, will be containing 0.1g Pt (the NO of Pt3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.9g ZrO2/CuO-CuCr2O4In powder, dipping 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/CuO- CuCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 1.
Comparative example 1
(1)CuO-CuCr2O4The preparation method of powder is same as in Example 1.
(2) according to Pt at Pt/CuO-CuCr2O4Weight/mass percentage composition in catalyst is 2%, by the Pt containing 0.2g Pt (NO3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g CuO-CuCr2O4In powder, dipping 5h, then 90 DEG C Water-bath fried dry, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/CuO-CuCr2O4Catalyst.
(3) reactivity worth of catalyst is shown in Table 2.
Comparative example 2
(1) according to Cu (NO3)2·3H2O、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:2:3, by 10.43g Cu (NO3)2·3H2O、34.56g Cr(NO3)3·9H2O and 27.23g citric acid is dissolved in 200mL deionized water, and mixed solution is 90 DEG C stirring in water bath is to gel state, and then 120 DEG C are dried 8 hours, roasting 4h under last 600 DEG C of air atmospheres.Wherein Cr and Cu CuCr is defined through solid state reaction2O4, i.e. CuCr2O4Powder.
(2) according to ZrO2At ZrO2/CuCr2O4Weight/mass percentage composition in powder is 5%, by 1.08g ZrO (NO3)2· 2H2O is dissolved in 20mL deionized water, then by ZrO (NO3)2Aqueous solution adds 9.5g CuCr2O4In powder, impregnate 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/CuCr2O4Powder.
(3) according to Pt at Pt/ZrO2/CuCr2O4Weight/mass percentage composition in catalyst is 2%, by containing 0.2g Pt's Pt(NO3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g ZrO2/CuCr2O4In powder, impregnate 5h, then 90 DEG C water-bath fried dry, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/CuCr2O4Catalyst.
(4) reactivity worth of catalyst is shown in Table 2.
Comparative example 3
(1)CuCr2O4The preparation method of powder is identical with comparative example 2.
(2) according to Pt at Pt/CuCr2O4Weight/mass percentage composition in catalyst is 2%, by the Pt containing 0.2g Pt (NO3)2Solution, is diluted to 20ml with deionized water, is subsequently adding 9.8g CuCr2O4In powder, impregnate 5h, then 90 DEG C of water-baths Fried dry, 120 DEG C are dried 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/CuCr2O4Catalyst.
(3) reactivity worth of catalyst is shown in Table 2.
Catalyst activity test condition, sieves the catalyst tabletting prepared, and selects the catalyst of 100-120 mesh afterwards Granule, consumption is 0.1g, loads in the quartz ampoule (internal diameter is 6mm) of reaction.1%CO+1%O2And 1%CO+1%O2+ 15%CO2+ 10%H2O, remaining is nitrogen, and respectively as the reaction gas of different atmosphere, wherein air speed is 60000mLg-1h-1, survey Determine the CO reactivity worth of catalyst.The minimum response temperature that catalyst performance reaches 50% with CO conversion ratio uses T respectively50-1 represents 1%CO+1%O2+N2Reaction atmosphere, and T50-2 represent the 1%CO+1%O that there is steam and carbon dioxide2+ 15%CO2+ 10% H2O+N2Reaction atmosphere.
Table 1: the activity that embodiment 1-5 catalyst carbon monoxide eliminates
Table 2: the activity that comparative example 1-3 catalyst carbon monoxide eliminates
The relatively T in above Tables 1 and 250-1 and T50-2 understand, under steam and carbon dioxide environment, and all catalyst Catalytic performance do not weaken, but enhancing in various degree, i.e. CO conversion ratio reaches 50% minimum response temperature in need Degree does not improve, but decline in various degree.Wherein embodiment 1 catalyst (Pt/ZrO2/CuO-CuCr2O4) CO conversion ratio The minimum response temperature reaching 50% reduces 20 DEG C fully, best performance.The catalytic performance of table 1 is all higher than the catalytic of table 2 Can (the i.e. T of table 150-1 and T50The value of-2 values below table 2, and T in table 150-1 and T50The difference of-2 is higher than table 2), this table Bright Pt, ZrO2With MO-MCr2O4In the presence of three components are common, the performance of catalyst reaches optimum.
As can be seen here, the catalyst of the present invention has preferably for carbon monoxide catalytic removal under steam and carbon dioxide environment Effect, embodiment 1 catalyst (Pt/ZrO2/CuO-CuCr2O4) the effect of catalytic removal carbon monoxide best.This catalyst There is preparation technology simple, water vapor and carbon dioxide ability is strong, reaction temperature is relatively low and the feature such as good stability.At steam With under carbon dioxide environment, catalysis activity does not the most decline and improves on the contrary.Illustrate that this catalyst is highly suitable for steam and two Carbon monoxide under carbonoxide environment eliminates, and which solves catalyst for eliminating carbon monoxide fast under steam and carbon dioxide environment A difficult problem for speed inactivation.

Claims (4)

1. the catalyst for catalyzing carbon monoxide oxidation, it is characterised in that: this catalyst is by MO-MCr2O4Bimetallic oxygen Compound carrier, ZrO2Forming with precious metals pt double-component active specy, wherein M is Cu, Ni or Zn, M Yu Cr mol ratio is 1:1, ZrO2Weight/mass percentage composition be 5%, the weight/mass percentage composition of Pt is 0.5-2%.
2. the preparation method of catalyst described in claim 1, it is characterised in that: use equi-volume impregnating to prepare, with MO- MCr2O4Bimetallic oxide is carrier loaded ZrO2With precious metals pt catalyst, prepare MO-initially with sol-gal process MCr2O4Double-component carrier, then at MO-MCr2O4Supported on carriers ZrO2Obtain ZrO2/MO-MCr2O4, finally at ZrO2/MO- MCr2O4Upper carried noble metal Pt, obtains Pt/ZrO2/MO-MCr2O4Catalyst.
Preparation method the most according to claim 2, it is characterised in that specifically include following steps:
(1) by M (NO3)2·xH2O、Cr(NO3)3·9H2O and citric acid are dissolved in deionized water, after being completely dissolved, and then 90 DEG C of water Bath stirring is to gel state, and then 120 DEG C are dried 8 hours, and roasting 4h under last 600 DEG C of air atmospheres obtains MO-MCr2O4Powder End, wherein x is 3 or 6.M(NO3)2·xH2O、Cr(NO3)3·9H2The mol ratio of O and citric acid is 1:1:2；
(2) by ZrO (NO3)2·2H2O is dissolved in deionized water, after being completely dissolved, adds MO-MCr2O4In powder, incipient impregnation 5h, then 90 DEG C of water-bath fried drys, 120 DEG C are dried 8 hours, and roasting 4h under last 400 DEG C of air atmospheres obtains ZrO2/MO-MCr2O4 Powder；
(3) by Pt (NO3)2Solution adds ZrO2/MO-MCr2O4In powder, incipient impregnation 5h, then 90 DEG C of water-bath fried drys, 120 DEG C dry 8 hours, finally H at 100 DEG C2Reductase 12 h under atmosphere, obtains Pt/ZrO2/MO-MCr2O4Catalyst.
4. catalyst described in claim 1 eliminates the application in carbon monoxide under steam and carbon dioxide environment.
CN201610517345.3A 2016-06-29 2016-06-29 A kind of catalyst and preparation method thereof for catalyzing carbon monoxide oxidation Active CN106040260B (en)

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CN111617776A (en) * 2020-06-12 2020-09-04 烟台大学 Rich in CO2Au/M for catalyzing CO oxidation under atmosphere1-M2-Ox/Al2O3Nano gold catalyst
CN112675846A (en) * 2020-12-22 2021-04-20 安徽稞馨环境科技有限公司 Preparation method and application of noble metal monolithic catalyst for removing carbon monoxide at room temperature by catalytic oxidation method
CN112934235A (en) * 2021-03-05 2021-06-11 江苏美玛技术有限公司 Catalyst for hydrogen purification of new energy fuel cell

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CN110394053A (en) * 2019-08-14 2019-11-01 中国矿业大学 A kind of digestion procedure and digestion instrument of carbon monoxide rapid-digestion
CN110394053B (en) * 2019-08-14 2021-11-05 中国矿业大学 Digestion method and digestion device for rapidly digesting carbon monoxide
CN111135835A (en) * 2019-12-17 2020-05-12 安徽元琛环保科技股份有限公司 Carbon monoxide catalytic oxidation catalyst and preparation method and application thereof
CN111617776A (en) * 2020-06-12 2020-09-04 烟台大学 Rich in CO2Au/M for catalyzing CO oxidation under atmosphere1-M2-Ox/Al2O3Nano gold catalyst
CN112675846A (en) * 2020-12-22 2021-04-20 安徽稞馨环境科技有限公司 Preparation method and application of noble metal monolithic catalyst for removing carbon monoxide at room temperature by catalytic oxidation method
CN112934235A (en) * 2021-03-05 2021-06-11 江苏美玛技术有限公司 Catalyst for hydrogen purification of new energy fuel cell
CN112934235B (en) * 2021-03-05 2024-04-02 河北思动环保科技有限公司 Catalyst for purifying hydrogen of new energy fuel cell

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