Catalytic Activity of Alumina Supported Platinum-Nickel Alloys
作者： A.J. Renouprez , B. Moraweck , B. Imelik , V. Perrichon , J.M. Domingez-Esquivel
DOI: 10.1016/S0167-2991(09)60269-X
关键词:
摘要: Well defined alumina-supported Pt-Ni alloys have been prepared. X-ray diffraction, small angle scattering and magnetism show that they are homogeneous in the bulk. Little segregation of nickel on surface is detected by XPS. A strong maximum turnover for isomerisation neopentane to isopentane, observed composition range (Pt 80, 90 -Ni 20,10 ). Similarly, hydrogenolysis neopentane, rate increased two order magnitude Ni Pt 10 . This synergetic effect attributed modifications electronic properties both metals critical compositions. conclusion supported studies platinum L III edge which undergoes deep modifications.
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