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采用氢电弧等离子体法制备了具有储氢性能的镍铈纳米颗粒,通过扫描电镜、透射电镜、X光电子能谱、X射线粉末衍射、程序升温还原等手段对比表征了氧化铝负载的纳米镍铈催化剂和工业用负载镍催化剂,并以裂解汽油一段加氢反应为模型反应研究了它们的催化性能.研究结果表明,纳米镍铈催化剂的催化活性和储氢性能与催化剂表面的镍铈合金有关,负载性纳米镍铈催化剂的优良选择性与其特殊的制备方法有关.
Nickel-cerium nanoparticles with hydrogen storage properties were prepared by hydrogen arc plasma method. The properties of the nano-Ni-Ce supported on alumina were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray powder diffraction and temperature programmed reduction. Catalysts and industrial supported nickel catalysts, and their catalytic performance was studied by using a hydrogenation reaction of pyrolysis gasoline as a model reaction.The results show that the catalytic activity and hydrogen storage capacity of nano-Ni-Ce catalysts are related to the Ni-Ce alloy on the surface of catalysts, The excellent selectivity of supported nano-nickel-cerium catalysts is related to its special preparation method.