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题名: Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene
作者: Wang, J;  Li, WZ;  Perot, G;  Lemberton, JL;  Yu, CY;  Thomas, C;  Zhang, YZ;  Li, C;  Xin, Q
刊名: SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS
发表日期: 1997
卷: 112, 页:171-178
收录类别: ISTP ;  SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Hydrodesulfurization (HDS) of dibenzothiophene (DBT) over PtMo/Al2O3 was studied in the presence of H2S. Pt was found to be an effective promoter for this reaction and the Pt-containing catalyst was sulfur tolerance. Data of the H-2-D-2 exchange revealed that both the amount of retained hydrogen and the initial rate of H-D exchange on the sulfided catalyst were increased by the introduction of a slight amount of Pt into the catalyst, and corresponded very well to the catalytic activities for HDS. The reduction and sulfidation of Mo sites was also facilitated very much by Pt, which was found by the results of the pulse reduction and sulfidation technique. It is proposed that, during the pretreatment of PtMo/Al2O3, H-2 is first dissociated into hydrogen atoms on Pt sites, which then spillover onto Mo sites, providing a large amount of coordinately unsaturated Mo sites for the HDS reaction, and resulting in the higher HDS activity than the unpromoted one.
关键词[WOS]: CATALYSTS ;  HYDRODENITROGENATION ;  SELECTIVITY ;  ALUMINA
语种: 英语
WOS记录号: WOS:000071952700018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142817
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Poitiers, URA CNRS 350, Catalyse Chim Organ Lab, F-86022 Poitiers, France

Recommended Citation:
Wang, J,Li, WZ,Perot, G,et al. Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene[J]. SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS,1997,112:171-178.
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