Studies of Preparation and Stability of An/Fe2O3 Catalyst for CO Oxidation at Ambient Temperature and Moisture

Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (5): 752.

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Studies of Preparation and Stability of An/Fe₂O₃ Catalyst for CO Oxidation at Ambient Temperature and Moisture

WANG Gui-Ying¹, YU Jia-You², LIAN Hong-Lei¹, LI Xue-Mei¹, JIA Ming-Jun¹, ZHANG Wen-Xiang¹, WU Tong-Hao¹, GE Yan-Dong³

1. Department of Chemistry, Jilin University, Changchun 130023, China;Department of Chemical Engineering, Dalian Institute of Light Industry, Dalian 116020, China;
2. The Advanced Personal Training Center of Daqing Oil Filed, Daqing 167443, China;
3. The Advanced Personal Training Center of Daqing Oil Filed, Daqing 167443, China

Received:1999-10-10 Online:2000-05-24 Published:2000-05-24

Abstract

Abstract: The catalytic performance of COoxidation at ambient temperature and moisture over An/Fe2O₃ catalysts prepared by different methods was studied. It was found that the stability of the catalysts was greatly changed with the variation of the preparation methods, the kind of precipitant, calcination temperature, and An loading. The sample of 3%An/Fe₂O₃ prepared by adding HAuCl₄ and Fe₂(NO₃)₃ with K₂CO₃ or Na₃CO₃ as the precipitants, calcined at 250-350℃ in air for 3 h has the best stability and the best ability of resisting moisture, that is, the sample can maintain COcomplete conversion at 25℃ and ambient moisture for at least 430h. The XRDresults indicate that the stability is inversely proportional to the metallic gold and a-Fe₂O₃ particle sizes, and the chemical states of gold and iron were the main controlling factors of the stability of An/Fe₂O_3.

Key words: An/Fe₂O₃, Ambient temperature and moisture, Catalytic oxidation of carbon monooxide, Stability

CLC Number:

O643.2

TrendMD:

WANG Gui-Ying, YU Jia-You, LIAN Hong-Lei, LI Xue-Mei, JIA Ming-Jun, ZHANG Wen-Xiang, WU Tong-Hao, GE Yan-Dong . Studies of Preparation and Stability of An/Fe₂O₃ Catalyst for CO Oxidation at Ambient Temperature and Moisture[J]. Chem. J. Chinese Universities, 2000, 21(5): 752.

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Studies of Preparation and Stability of An/Fe₂O₃ Catalyst for CO Oxidation at Ambient Temperature and Moisture

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