Structures and performance of Pd-Mo-K/Al2O3 catalysts used for mixed alcohol synthesis from synthesis gas

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	Structures and performance of Pd-Mo-K/Al2O3 catalysts used for mixed alcohol synthesis from synthesis gas
	Li, ZR; Fu, YL; Jiang, M; Meng, M; Xie, YN; Hu, TD; Liu, T; Xie YN(谢亚宁); Hu TD(胡天斗); Liu T(刘涛)
刊名	CATALYSIS LETTERS
	2000
卷号	65 期号:1-3 页码:43-48
关键词	sulfided Pd-Mo-K Al2O3 catalysts structure characterizations mixed alcohol synthesis
通讯作者	Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China ; Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
英文摘要	The structures of the palladium-modified Mo-K/Al2O3 catalyst samples were characterized by the XRD, LRS, and EXAFS techniques and correlated to the catalytic properties of the samples for alcohol synthesis from synthesis gas. It is found that in the oxidic palladium-modified samples a strong interaction of the palladium modifier with the supported K-Mo-O species occurs. This interaction leads to a decrease in the size of the molybdenum species and stabilization of the cationic palladium species on the samples during sulfidation. Upon sulfidation, the sulfided molybdenum species in the palladium-free sample is mainly present as large patches of MoS2-like slabs with their basal sulfur planes interacting with the support surface. With the modification of palladium to the samples, the supported MoS2-like species becomes highly dispersed as revealed by the decrease in the average size of the sulfided molybdenum species. The interaction of the palladium species with the molybdenum component may cause the basal planes of the MoS2-like species to become oriented perpendicular to the support surface due to favorable bonding of the MoS2 edge planes to the support through Mo-O-Al bonds. In comparison with the sulfided Pd-free sample, the properties of the Pd-modified samples for alcohol synthesis from synthesis gas are much improved, which most probably results from the synergic interaction of the palladium with the molybdenum species that gives rise to the appearance of the active sites.
学科主题	Chemistry
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
原文出处	SCI
语种	英语
WOS记录号	WOS:000085878200007
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236805]
专题	中国科学院高能物理研究所_中国散裂中子源高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li, ZR,Fu, YL,Jiang, M,et al. Structures and performance of Pd-Mo-K/Al2O3 catalysts used for mixed alcohol synthesis from synthesis gas[J]. CATALYSIS LETTERS,2000,65(1-3):43-48.
APA	Li, ZR.,Fu, YL.,Jiang, M.,Meng, M.,Xie, YN.,...&刘涛.(2000).Structures and performance of Pd-Mo-K/Al2O3 catalysts used for mixed alcohol synthesis from synthesis gas.CATALYSIS LETTERS,65(1-3),43-48.
MLA	Li, ZR,et al."Structures and performance of Pd-Mo-K/Al2O3 catalysts used for mixed alcohol synthesis from synthesis gas".CATALYSIS LETTERS 65.1-3(2000):43-48.