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

A carbon monoxide, catalytic oxidation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low activity

Active Publication Date: 2016-10-26
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved in the present invention is to provide a high-performance catalyst for catalytic oxidation of carbon monoxide and its preparation method for the problem of low activity of existing carbon monoxide catalytic oxidation catalysts in an actual reaction atmosphere containing water vapor and carbon dioxide

Method used

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  • Catalyst for catalytic oxidation of carbonic oxide and preparation method of catalyst
  • Catalyst for catalytic oxidation of carbonic oxide and preparation method of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0018] (1) According to Cu(NO 3 ) 2 ·3H 2 O, Cr(NO 3 ) 3 9H 2 The molar ratio of O and citric acid is 1:1:2, and 16.38g Cu(NO 3 ) 2 ·3H2 O, 27.12g Cr(NO 3 ) 3 9H 2 O and 28.50 g of citric acid were dissolved in 200 mL of deionized water, and the mixed solution was stirred in a water bath at 90 °C until it was in a gel state, then dried at 120 °C for 8 hours, and finally calcined at 600 °C for 4 h in an air atmosphere. Among them, Cr and part of Cu undergo a solid-state reaction to form CuCr 2 o 4 , the remaining Cu forms CuO, giving CuO and CuCr 2 o 4 Mixture, namely CuO-CuCr 2 o 4 powder.

[0019] (2) According to ZrO 2 in ZrO 2 / CuO-CuCr 2 o 4 The mass percent composition in powder is 5%, and 1.08g ZrO(NO 3 ) 2 2H 2 O was dissolved in 20 mL deionized water, and then ZrO(NO 3 ) 2 Add 9.5g CuO-CuCr to the aqueous solution 2 o 4 In the powder, immerse for 5 hours, then dry it in a water bath at 90°C, bake at 120°C for 8 hours, and finally bake at 400°C...

Embodiment 2

[0023] (1) According to Ni(NO 3 ) 2 ·6H 2 O, Cr(NO 3 ) 3 9H 2 The molar ratio of O and citric acid is 1:1:2, and 20.38g Ni(NO 3 ) 2 ·6H 2 O, 28.04g Cr(NO 3 ) 3 9H 2 O and 29.45g of citric acid were dissolved in 200mL of deionized water, and the mixed solution was stirred in a water bath at 90°C until it was in a gel state, then dried at 120°C for 8 hours, and finally calcined at 600°C for 4 hours in an air atmosphere. Among them, Cr and part of Ni undergo a solid-state reaction to form NiCr 2 o 4 , the remaining Ni forms NiO to give NiO and NiCr 2 o 4 Mixture, namely NiO-NiCr 2 o 4 powder.

[0024] (2) According to ZrO 2 in ZrO 2 / NiO-NiCr 2 o 4 The mass percent composition in powder is 5%, and 1.08g ZrO(NO 3 ) 2 2H 2 O was dissolved in 20 mL deionized water, and then ZrO(NO 3 ) 2 Add 9.5g NiO-NiCr to the aqueous solution 2 o 4 In the powder, immerse for 5 hours, then dry it in a water bath at 90°C, bake at 120°C for 8 hours, and finally bake at 400°...

Embodiment 3

[0028] (1) According to Zn(NO 3 ) 2 ·6H 2 O, Cr(NO 3 ) 3 9H 2 The molar ratio of O and citric acid is 1:1:2, and 19.91g Zn(NO 3 ) 2 ·6H 2 O, 26.79g Cr(NO 3 ) 3 9H 2 O and 28.13g of citric acid were dissolved in 200mL of deionized water, and the mixed solution was stirred in a water bath at 90°C until it was in a gel state, then dried at 120°C for 8 hours, and finally calcined at 600°C for 4 hours in an air atmosphere. Among them, Cr and part of Zn undergo a solid-state reaction to form ZnCr 2 o 4 , the remaining Zn forms ZnO, resulting in ZnO and ZnCr 2 o 4 Mixture, namely ZnO-ZnCr 2 o 4 powder.

[0029] (2) According to ZrO 2 in ZrO 2 / ZnO-ZnCr 2 o 4 The mass percent composition in powder is 5%, and 1.08g ZrO(NO 3 ) 2 2H 2 O was dissolved in 20 mL deionized water, and then ZrO(NO 3 ) 2 Add 9.5g ZnO-ZnCr to the aqueous solution 2 o 4 In the powder, immerse for 5 hours, then dry it in a water bath at 90°C, bake at 120°C for 8 hours, and finally bake a...

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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

technical field [0001] The invention relates to a chemical catalyst, in particular to a catalyst for catalytic oxidation of carbon monoxide and a preparation method thereof. Background technique [0002] CO is a typical flammable and toxic gas and one of the most common gaseous pollutants, which is produced in the fields of fossil fuel combustion, chemical industry and motor vehicles. When carbon monoxide invades the body, it will quickly combine with hemoglobin to form carboxyhemoglobin, thereby hindering the combination of oxygen and hemoglobin to form oxyhemoglobin. The poisoned person will have a weak pulse, slow breathing, and finally collapse to death. In addition, during the hydrogen production process of the proton exchange membrane fuel cell, a small amount of CO in the methanol reformed gas is easily adsorbed on the surface of the anode catalyst of the fuel cell, which seriously reduces the performance of the battery. The CO in the reformed gas must be removed, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J23/652B01D53/86B01D53/62
CPCB01D53/864B01D2257/502B01J23/6522B01J23/8993Y02A50/20
Inventor 罗孟飞邓芸贾爱平鲁继青
Owner ZHEJIANG NORMAL UNIVERSITY
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