A highly efficient Cu/ZnO/Al2O3 catalyst via gel-coprecipitation of oxalate precursors for low-temperature steam reforming of methanol
A highly efficient Cu/ZnO/Al2O3 catalyst via gel-coprecipitation of oxalate precursors for low-temperature steam reforming of methanol
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DOI：
10.1007/s10562-005-5853-7
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发表时间：
2005-08
影响因子：
2.8
通讯作者：
Xin-Rong Zhang;Lu-Cum Wang;C. Yao;Yong Cao;W. Dai;Heyong He;Kangnian Fan
中科院分区：
文献类型：
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作者：
Xin-Rong Zhang;Lu-Cum Wang;C. Yao;Yong Cao;W. Dai;Heyong He;Kangnian Fan
研究了制备方法对甲醇蒸汽重整制h2cu /ZnO/ al2o3催化剂结构和催化性能的影响。结果表明，草酸盐前驱体凝胶共沉淀法制备的Cu/ZnO/ al2o3纳米结构催化剂具有高比表面积和高组分分散性，在SRM反应中表现出比传统共沉淀法制备的催化剂更高的活性。结果表明，草酸凝胶-共沉淀法衍生的Cu/ZnO/ al2o3催化剂具有优异的催化性能，这可能是由于草酸凝胶-前驱体中铜和锌的同质取代使锌更容易进入CuC2O4·xH2O前驱体，从而产生了具有更高金属铜比表面的“催化活性”铜材料，以及更强的Cu - zn相互作用。
The impact of preparation methods on the structure and catalytic behavior of Cu/ZnO/Al2O3catalysts for H2production from steam reforming of methanol (SRM) has been reported. The results show that the nanostructured Cu/ZnO/Al2O3catalyst obtained by a novel gel-coprecipitation of oxalate precursors has a high specific surface area and high component dispersion, exhibiting much higher activity in the SRM reaction as compared to the catalysts prepared by conventional coprecipitation techniques. It is suggested that the superior catalytic performance of the oxalate gel-coprecipitation-derived Cu/ZnO/Al2O3catalyst could be attributed to the generation of “catalytically active” copper material with a much higher metallic copper specific surface as well as a stronger Cu–Zn interaction due to an easier incorporation of zinc species into CuC2O4·xH2O precursors as a consequence of isomorphous substitution between copper and zinc in the oxalate gel-precursors.