Oxidative addition of dihydrogen to the bimetallic sulfide catalysts: evidence by X-ray photoelectron spectroscopy

被引:13
作者
Startsev, AN [1 ]
Kalinkin, AV [1 ]
Zakharov, II [1 ]
Aksenov, DG [1 ]
Parmon, VN [1 ]
机构
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
基金
俄罗斯基础研究基金会;
关键词
sulfide HDS catalysts; X-ray photoelectron spectroscopy; oxidative addition of hydrogen;
D O I
10.1016/S1381-1169(99)00237-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Reversible transformations Ni(IV) <-> Ni(II) in alumina and Sibunit supported (Ni,Mo) sulfide catalysts were observed after in situ thermal treatment of catalysts in an X-ray photoelectron spectrometer chamber. The phenomenon is interpreted as a reductive elimination of occluded hydrogen under low pressure and high temperature, and oxidative addition of hydrogen after catalyst treatment with an (H-2 + H2S) mixture. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:171 / 177
页数:7
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