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Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene
Wang, J; Li, WZ; Perot, G; Lemberton, JL; Yu, CY; Thomas, C; Zhang, YZ; Li, C; Xin, Q
Source PublicationSPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS
1997
Volume112Pages:171-178
Indexed ByISTP ; SCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordCATALYSTS ; HYDRODENITROGENATION ; SELECTIVITY ; ALUMINA
AbstractHydrodesulfurization (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.
Language英语
WOS IDWOS:000071952700018
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142817
Collection中国科学院大连化学物理研究所
Affiliation1.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
GB/T 7714
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.
APA Wang, J.,Li, WZ.,Perot, G.,Lemberton, JL.,Yu, CY.,...&Xin, Q.(1997).Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene.SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS,112,171-178.
MLA Wang, J,et al."Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene".SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS 112(1997):171-178.
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