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通过X-射线衍射和穆斯堡尔谱研究发现,国产 B_(104)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。
By X-ray diffraction and Mossbauer spectroscopy, it was found that the catalytically active structure of domestic B_ (104) intermediate temperature spent spent catalyst (containing 7-9% by weight of Cr) after “dry regeneration” is non-stoichiometric ferriferous oxide And iron chromium solid solution. Relatively speaking, the catalytic effect of iron (III) in ferric oxide is stronger than that of iron (III) in iron oxide. Meanwhile, the localized exchange of electrons in the iron (B) ion pair may be involved in the redox process in the catalytic reaction.