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Supported catalyst for eliminating CO at low temperature, preparation method and application thereof

A supported catalyst and catalyst technology are applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Simple, easy-to-use effects

Inactive Publication Date: 2011-06-29
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-temperature supported catalyst for eliminating CO, its preparation method and use, in view of the disadvantages of the high temperature of the existing non-precious metal catalysts used for CO elimination.

Method used

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  • Supported catalyst for eliminating CO at low temperature, preparation method and application thereof
  • Supported catalyst for eliminating CO at low temperature, preparation method and application thereof
  • Supported catalyst for eliminating CO at low temperature, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Weigh 0.036g Cu(NO 3 ) 2 ·3H 2 O, 0.126g KNO 3 , 1.2g α-MnO 2 Add it into 15mL of deionized water, remove the deionized water at 60°C, put the product in an oven and bake it at 40°C for 12 hours, and then bake it at 300°C for 10 hours in an air atmosphere to obtain a catalyst. The amount of K ion substances in the catalyst accounts for α-MnO 2 10% of the amount of substance, the mass of CuO accounted for α-MnO 2 1% of mass.

Embodiment 2

[0036] Weigh 0.191g Cu(NO 3 ) 2 ·3H 2 O, 0.138g KNO3 , 1.2g α-MnO 2 Add it into 20mL of deionized water, remove the deionized water at 120°C, put the product in an oven and bake it at 80°C for 10 hours, and then roast it at 400°C for 6 hours in an air atmosphere to obtain a catalyst. The amount of K ions in the catalyst accounts for α -MnO 2 11% of the mass of the substance, CuO accounted for α-MnO 2 5.13% of mass.

Embodiment 3

[0038] Weigh 0.403g Cu(NO 3 ) 2 ·3H 2 O, 0.151g KNO 3 , 1.2g α-MnO 2 Add it into 25mL of deionized water, remove the deionized water at 120°C, put the product in an oven and bake it at 100°C for 8 hours, and then roast it at 500°C for 4 hours in an air atmosphere to obtain a catalyst. The amount of K ion species in the catalyst accounts for α -MnO 2 12% of the mass of the substance, CuO accounted for α-MnO 2 10.26% of mass.

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Abstract

The invention relates to a supported catalyst for eliminating CO at low temperature, a preparation method and application thereof. The catalyst takes alpha-MnO2 as a carrier, CuO as an active component and a compound of K as an additive, the CuO and the compound of the K are supported on the alpha-MnO2, the mass of the CuO is 1 to 25 percent of that of the alpha-MnO2, and the amount of K ions is 10 to 14 percent of that of the alpha-MnO2. The method for preparing the catalyst comprises the steps of: mixing Cu salt, K salt and the alpha-MnO2 carrier evenly in deionized water; then removing themoisture; drying the mixture; and roasting the mixture to obtain the catalyst. The catalyst can eliminate CO under the condition of low temperature, and has high efficiency of CO transformation at low temperature and less consumption. The method for preparing the catalyst is simple and has low cost and high feasibility.

Description

technical field [0001] The invention relates to a supported catalyst for catalytic oxidation to eliminate toxic waste gas in the atmosphere and its preparation method and application, in particular to a supported catalyst for eliminating CO at low temperature, its preparation method and application. Background technique [0002] CO is a flammable, explosive and harmful gas pollutant. The CO oxidation reaction is also one of the important reactions to eliminate air pollution, especially the purification of automobile exhaust. The active components of traditional catalysts for catalytic oxidation to eliminate CO are mostly noble metals such as Pt, Pd, Rh, etc., which are loaded on metal oxide supports. Although noble metal catalysts have high catalytic activity for CO, noble metal catalysts are prone to poisoning and expensive. Therefore, people are paying more and more attention to high-efficiency non-noble metal catalysts, especially transition metal oxide catalysts. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J27/25B01J31/04B01D53/62B01D53/86B01D53/94
CPCY02A50/20
Inventor 罗孟飞刘雪松鲁继青
Owner ZHEJIANG NORMAL UNIVERSITY