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首页> 外文期刊>International journal of green energy >Effects of alkali promoters on the textural and catalytic properties of mesoporous Fe-AI-Cu catalysts for water gas shift reaction
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Effects of alkali promoters on the textural and catalytic properties of mesoporous Fe-AI-Cu catalysts for water gas shift reaction

机译：碱促进剂对介孔Fe-Al-Cu催化剂用于水煤气变换反应的质构和催化性能的影响

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摘要

Mesoporous Fe2O3-Al2O3-CuO catalysts promoted with alkali oxides were synthesized and used in water gas shift reaction (WGSR) at high temperatures for hydrogen purification. These chromium-free catalysts were characterized using nitrogen adsorption/desorption, hydrogen temperature programmed reduction, X-ray diffraction (XRD), and transmission electron microscopy techniques. The synthesized catalysts with narrow single-modal pore size distribution in mesopore region possessed high specific surface area. The catalytic results revealed that except Cs, the addition of other alkali promoters declined the catalytic activity. However, all catalysts showed higher catalytic performance than the conventional commercial catalyst. The results showed an optimum content of Cs promoter (3 wt.%) for the promoted Fe-Al-Cu catalyst (3 wt.% Cs-FAC), which exhibited the highest activity in WGSR at high temperature.
机译：合成了用碱金属氧化物促进的介孔Fe2O3-Al2O3-CuO催化剂，并将其用于高温水煤气变换反应（WGSR）中进行氢纯化。这些无铬催化剂的特征在于使用氮吸附/解吸，氢程序升温还原，X射线衍射（XRD）和透射电子显微镜技术。合成的中孔区域单峰孔径分布窄的催化剂具有较高的比表面积。催化结果表明，除铯外，其他碱助催化剂的加入均降低了催化活性。但是，所有催化剂均显示出比常规商业催化剂更高的催化性能。结果显示对于促进的Fe-Al-Cu催化剂（3重量％的Cs-FAC），Cs促进剂的最佳含量（3重量％），其在高温下在WGSR中表现出最高的活性。

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