高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (5): 752.

• 论文 • 上一篇    下一篇

常温常湿CO氧化催化剂An/Fe2O3 的制备与稳定性研究

王桂英1, 余加佑2, 廉红蕾1, 李雪梅1, 贾明君1, 张文祥1, 吴通好1, 葛炎东3   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 大连轻工业学院化学工程系, 大连 116026;
    3. 大庆油田高级人才培训中心, 大庆 167443
  • 收稿日期:1999-10-10 出版日期:2000-05-24 发布日期:2000-05-24
  • 通讯作者: 张文祥(1962年出生),男,博士,教授,博士生导师,从事环保催化剂研究.
  • 基金资助:

    煤转化国家重点实验室开放基金

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. 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

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摘要： 研究了不同方法制备的An/Fe2O3催化剂上常温常湿条件下CO的氧化性能。结果表明,加料顺序、焙烧温度、沉淀剂种类、金含量等因素对催化剂的稳定性均有较大影响,其中以K2CO3或Na2CO3为沉淀剂,金含量3%,焙烧温度250～350℃制得的催化剂具有较好的稳定性和抗水性,于25℃连续加入水蒸气反应430h可保持CO完全转化。XRD结果表明,催化剂的稳定性与单质金及α-Fe2O3的粒径成反比,并与金和铁的化学状态有关。

关键词: An/Fe2O3, 常温常湿, CO催化氧化, 稳定性

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/Fe2O3.

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

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