Ce改性Fe2O3催化剂对CO催化氧化的影响

doi:10.16085/j.issn.1000-6613.2017-0090

摘要/Abstract

摘要： 采用共沉淀法制备铁铈氧化物催化剂，考察Ce添加对Fe₂O₃催化氧化CO性能的影响。活性测试表明，负载Ce后，催化剂活性显著提升，CO的转化率在常温常压下能够达到90%以上，主要得益于添加Ce后的催化剂有着较大的比表面积，更好的氧化还原性能以及在催化剂中形成铁铈固溶体。此外，不同的铁前体对催化剂的活性有较大影响。实验结果表明，以FeCl₃作为前体制备出的CeO₂/Fe_（c）具有最大的比表面积和较好的氧化还原性能，从而显示出最佳的CO氧化活性。

关键词: 催化, 还原, 氧化, 一氧化碳

Abstract: A series of iron-ceria oxide catalysts were prepared by co-precipitation method and the effects of Ce adding into Fe₂O₃ on CO catalytic oxidation activity were investigated. Activity result shows that the addition of Ce increases the CO catalytic activity significantly,which can attain more than 90% CO conversion at ambient temperature and atomospheric pressure. Higher surface area and better redox ability than those of pure Fe₂O₃,and the formation of iron-ceria solid solution in the catalyst may be responsible for the increased catalytic activity. Additionally,different iron precursor has great influence on the CO catalytic oxidation. Sample that was prepared by using FeCl₃as iron precursor shows the best catalytic performance.

Key words: catalysis, reduction, oxidation, carbon monoxide

中图分类号:

X511

陈然, 高晓亚, 王晶, 陈柯臻, 钟丽萍, 雷艳秋, 梅占强, 罗永明. Ce改性Fe₂O₃催化剂对CO催化氧化的影响[J]. 化工进展, 2017, 36(10): 3737-3742.

CHEN Ran, GAO Xiaoya, WANG Jing, CHEN Kezhen, ZHONG Liping, LEI Yanqiu, MEI Zhanqiang, LUO Yongming. Effect of Ce addition on Fe₂O₃ catalyst towards CO catalytic oxidation[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3737-3742.

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Ce改性Fe₂O₃催化剂对CO催化氧化的影响

Effect of Ce addition on Fe₂O₃ catalyst towards CO catalytic oxidation

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