Study of the Reducing and Sulfiding Process of Mo-Supported Catalyst by in situ LRS

	Study of the Reducing and Sulfiding Process of Mo-Supported Catalyst by in situ LRS
	Wei Zhaobin; Wei Chengdong; Xin Qin
刊名	acta physico-chimica sinica
	1994
卷号	10 期号:5 页码:402-408
关键词	In situ LRS Reduction Sulfidation Mo/Al2O3 Mo:TiO2-Al2O3
英文摘要	in this paper the changes of mo species of mo/al2o3 and mo/tio2-al2o3 catalysts in reducing and sulfiding process have been studied by in situ lr spectroscopic technique. the results show: (1) the reducibility of various mo species in mo/al2o3 is different.the bands of octahedral mo species and their polymer at 215 and 971 cm(-1) disappeared first at 100 degrees c, and then crystalline moo3 at 820 cm(-1) at below 300 degrees c in h-2. the bands of al-2(moo4)(3) phase at 377 and 1003 cm(-1) disappeared at 400 degrees c. polymer of octahedral mo species at 961 cm(-1) and crystalline moo3 at 289, 666, 816 and 994 cm(-1) exist in mo/tio2-al2o3 catalysts. the former was reduced at lower temperatures than the latter. (2) when h2s-h-2 flowed into sample cell at room temperature, the bands of oxidic mo/al2o3 disapeared, and simultaneously, the bands of mos2 at 377, 401 cm(-1) and complicated molybdenum oxysulfide at 325, 348, 450, 540 cm(-1) emerged. after sulfiding at 400 degrees c, only mos2 phase exists. for mo/tio2-al2o3, the bands of mo and tio2 disappeared upon sulfiding of a sample at room temperature, and the bands of mos2 at 375 and 398 cm(-1) emerged. this reveals that modification of the al2o3 surface by tio2 strongly enhances the sulfiding of mo supported catalysts
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
收录类别	SCI
语种	英语
WOS记录号	WOS:000207589200006
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/141171]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Wei Zhaobin,Wei Chengdong,Xin Qin. Study of the Reducing and Sulfiding Process of Mo-Supported Catalyst by in situ LRS[J]. acta physico-chimica sinica,1994,10(5):402-408.
APA	Wei Zhaobin,Wei Chengdong,&Xin Qin.(1994).Study of the Reducing and Sulfiding Process of Mo-Supported Catalyst by in situ LRS.acta physico-chimica sinica,10(5),402-408.
MLA	Wei Zhaobin,et al."Study of the Reducing and Sulfiding Process of Mo-Supported Catalyst by in situ LRS".acta physico-chimica sinica 10.5(1994):402-408.