A refinement on the notion of type I and II (Co)MoS phases in hydrotreating catalysts
The influence of Mo content on thiophene hydrodesulfurization for alumina- and carbon-supported (Co)Mo catalysts is investigated by TPR, XPS and H2-D2 equilibration. Activity trends for alumina-supported catalysts are explained by a gradual change of the type I MoS2 active phase from a large to a sm...
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| Veröffentlicht in: | Catalysis letters 2002-11, Vol.84 (1-2), p.59-67 |
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| container_title | Catalysis letters |
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| creator | HENSEN, E. J. M DE BEER, V. H. J VAN VEEN, J. A. R VAN SANTEN, R. A |
| description | The influence of Mo content on thiophene hydrodesulfurization for alumina- and carbon-supported (Co)Mo catalysts is investigated by TPR, XPS and H2-D2 equilibration. Activity trends for alumina-supported catalysts are explained by a gradual change of the type I MoS2 active phase from a large to a small number of Mo-O-Al anchors. A pure type II phase without such anchors and a high HDS activity is only obtained employing chelating ligands or a carbon support. At low Mo loading a separate oxysulfidic Mo species in strong interaction with alumina exhibits an unexpectedly high HDS activity, which, however, is difficult to promote by Co. |
| doi_str_mv | 10.1023/A:1021024617582 |
| format | Article |
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At low Mo loading a separate oxysulfidic Mo species in strong interaction with alumina exhibits an unexpectedly high HDS activity, which, however, is difficult to promote by Co.</description><identifier>ISSN: 1011-372X</identifier><identifier>EISSN: 1572-879X</identifier><identifier>DOI: 10.1023/A:1021024617582</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Aluminum oxide ; Anchors ; Carbon ; Catalysis ; Catalysts ; Catalytic reactions ; Chelation ; Chemistry ; Exact sciences and technology ; General and physical chemistry ; Hydrodesulfurization ; Molybdenum disulfide ; Strong interactions (field theory) ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Catalysis letters, 2002-11, Vol.84 (1-2), p.59-67</ispartof><rights>2003 INIST-CNRS</rights><rights>Catalysis Letters is a copyright of Springer, (2002). 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A</creatorcontrib><title>A refinement on the notion of type I and II (Co)MoS phases in hydrotreating catalysts</title><title>Catalysis letters</title><description>The influence of Mo content on thiophene hydrodesulfurization for alumina- and carbon-supported (Co)Mo catalysts is investigated by TPR, XPS and H2-D2 equilibration. Activity trends for alumina-supported catalysts are explained by a gradual change of the type I MoS2 active phase from a large to a small number of Mo-O-Al anchors. A pure type II phase without such anchors and a high HDS activity is only obtained employing chelating ligands or a carbon support. At low Mo loading a separate oxysulfidic Mo species in strong interaction with alumina exhibits an unexpectedly high HDS activity, which, however, is difficult to promote by Co.</description><subject>Aluminum oxide</subject><subject>Anchors</subject><subject>Carbon</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Catalytic reactions</subject><subject>Chelation</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Hydrodesulfurization</subject><subject>Molybdenum disulfide</subject><subject>Strong interactions (field theory)</subject><subject>Theory of reactions, general kinetics. Catalysis. 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| ispartof | Catalysis letters, 2002-11, Vol.84 (1-2), p.59-67 |
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| source | SpringerNature Journals |
| subjects | Aluminum oxide Anchors Carbon Catalysis Catalysts Catalytic reactions Chelation Chemistry Exact sciences and technology General and physical chemistry Hydrodesulfurization Molybdenum disulfide Strong interactions (field theory) Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | A refinement on the notion of type I and II (Co)MoS phases in hydrotreating catalysts |
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