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铁系催化剂一直是合成氨及制氢工业中一氧化碳变换反应最常用的催化剂。运用X射线衍射（XRD）、程序升温还原（TPR）及活性评价技术研究了添加金属氧化物对铁系催化剂的晶相结构、催化剂的稳定性和催化活性的影响。结果表明，不同的金属氧化物对催化剂结构的稳定作用和活性影响不同，其中CeO2和Bi2O3都能增强铁系催化剂的稳定性，提高催化剂的活性。
Iron-based catalysts have been the most commonly used catalysts for carbon monoxide shift reactions in ammonia synthesis and hydrogen production. The effects of metal oxides addition on the phase structure, catalyst stability and catalytic activity of iron-based catalysts were investigated by X-ray diffraction (XRD), temperature programmed reduction (TPR) and activity evaluation. The results show that different metal oxides have different effects on the stability and activity of the catalyst. Both CeO2 and Bi2O3 can enhance the stability of the iron-based catalyst and increase the activity of the catalyst.