引用本文:
王誉富, 刘忠范, 何吉先, 吴越. 合成氨中一氧化碳中温变换催化剂的活性结构及其催化作用[J]. 应用化学,
1985, 2(2): 7-11.
Citation: Wang Yufu, Liu Zhongfan, He Jixian, Wu Yue. ACTIVE STRUCTURE AND CATALYTICAL ROLE OF CO SHIFT CATALYSTS IN AMMONM SYNTHESIS[J]. Chinese Journal of Applied Chemistry, 1985, 2(2): 7-11.
Citation: Wang Yufu, Liu Zhongfan, He Jixian, Wu Yue. ACTIVE STRUCTURE AND CATALYTICAL ROLE OF CO SHIFT CATALYSTS IN AMMONM SYNTHESIS[J]. Chinese Journal of Applied Chemistry, 1985, 2(2): 7-11.
合成氨中一氧化碳中温变换催化剂的活性结构及其催化作用
摘要:
通过X-射线衍射和穆斯堡尔谱研究发现,国产B104中温变换废催化剂(含Cr7~9%重量)经"干法再生"后的催化活性结构是非化学计量的四氧化三铁和铁铬固溶体。相对而言,四氧化三铁中B位铁离子所起的催化作用更大;同时B位铁离子对的定域快速交换电子可能参与了催化反应中的氧化还原过程。
English
ACTIVE STRUCTURE AND CATALYTICAL ROLE OF CO SHIFT CATALYSTS IN AMMONM SYNTHESIS
Abstract:
By means of x-ray diffraction analysis and Mossbauer spectroscopy study it has been confirmed that the catalytically active structure of the B104 CO shift catalyst containing about 7-9% Cr consists of non-stoichiometric magn etite and iron-chromium solid solution. It appears that the iron ions in the B site of the magnetite play more important role than those in the A site, and that the electrons being exchanged rapidly between Fe2+ and Fe3+ in the B site may take part in the catalytic process.
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