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.