Sn修饰的Ni/Al2O3对降解<br /> N,N-二甲基甲酰胺制氢反应的催化性能<br />
Journal Title: Science Paper Online - Year 2010, Vol 5, Issue 3
Abstract
利用浸渍法制备了一系列不同含量Sn修饰的Ni/Al2O3催化剂(Ni-Sn/Al2O3)，并考察了催化剂对降解N,N-二甲基甲酰胺(DMF)制氢反应的催化性能。结果表明，利用Sn修饰Ni/Al2O3催化剂提高了其降解DMF制氢活性，当Sn/Ni摩尔比为0.1时，H2的产率从Ni/Al2O3催化剂上的43.4 μmol/min提高到69.8 μmol/min。但当Sn含量进一步增加时，DMF转化率和H2产率都明显下降。催化剂的N2物理吸附、X射线衍射(XRD)和H2程序升温还原(H2-TPR)表征结果表明，Ni-Sn/Al2O3催化剂中形成了Ni3Sn2的合金，且Ni-Sn/Al2O3与Sn-Raney Ni催化剂具有相近的晶体结构，但Ni-Sn/Al2O3比Sn-Raney Ni具有更高的比表面积及降解DMF制氢的活性。
Authors and Affiliations
Lingniao Kong, Yizhi Xiang, Xiaonian Li
Keywords
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