【摘要】 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.更多还原

【Abstract】 The nanoparticles supported with nickel-cerium possessing hydrogen storage property were prepared by hydrogen arc plasma method and ball milling method,and characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy,temperature-programmed reduction and pyrolysis naphtha primary hydrogenation test.It was shown that the catalytic activity and hydrogen storage property were related to NiCe alloy surface of the catalyst and the selectivity was related to the particular preparation methods.更多还原