TPD and HYD studies of unpromoted and Co-promoted molybdenum sulfide catalyst ex ammonium tetrathiomolybdate

被引:24
作者
Zhang, F [1 ]
Vasudevan, PT [1 ]
机构
[1] UNIV NEW HAMPSHIRE,DEPT CHEM ENGN,DURHAM,NH 03824
关键词
D O I
10.1006/jcat.1995.1317
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
Activity measurements of an unpromoted molybdenum sulfide catalyst prepared by the decomposition of ammonium tetrathiomolybdate (ATTM) indicate that the catalyst exhibits a higher HYD activity than a catalyst prepared by the conventional method of reductive sulfiding of the oxide, as well as a commercial catalyst, The increased activity can be attributed to a valence state of molybdenum lower than 4 in the supported sulfide catalyst and a concomitant increase in the number of anion vacancies as determined by TPD studies, The results also indicate that the addition of a promoter Co to ATTM results in higher I-IDS, but not higher HYD activity of the catalyst. (C) 1995 Academic Press, Inc.
引用
收藏
页码:536 / 544
页数:9
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