Structure, stability and activity of RuS2 supported on alumina
The relationships between the structure attained by alumina-supported RuS2 during sulfidation, the extent of desulfurization of the sulfided phase during HDS, and the hydrodesulfurization activity of the catalyst were studied by TPS, TPR-S, XRD, FT-IR of CO, and DRS–UV–Vis–NIR. Sulfidation in H2S/N2...
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| Veröffentlicht in: | Journal of catalysis 2008-11, Vol.260 (1), p.65-74 |
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| creator | Castillo-Villalón, Perla Ramírez, Jorge Maugé, Françoise |
| description | The relationships between the structure attained by alumina-supported RuS2 during sulfidation, the extent of desulfurization of the sulfided phase during HDS, and the hydrodesulfurization activity of the catalyst were studied by TPS, TPR-S, XRD, FT-IR of CO, and DRS–UV–Vis–NIR. Sulfidation in H2S/N2 generates a mixture of RuS2-pyrite and RuS2-amorphous. As the sulfidation temperature increases, more RuS2-pyrite is produced at the expense of RuS2-amorphous. The later is not stable and undergoes reduction in reaction conditions, producing a sulfur-depleted catalyst (S/Ru |
| doi_str_mv | 10.1016/j.jcat.2008.08.015 |
| format | Article |
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Sulfidation in H2S/N2 generates a mixture of RuS2-pyrite and RuS2-amorphous. As the sulfidation temperature increases, more RuS2-pyrite is produced at the expense of RuS2-amorphous. The later is not stable and undergoes reduction in reaction conditions, producing a sulfur-depleted catalyst (S/Ru<2) with low HDS activity. In contrast, RuS2-pyrite resists the drastic reducing conditions prevailing during HDS and is responsible for the high HDS activity. The changes in the catalyst properties with sulfidation temperature produce an opposite trend in the hydrogenation activity of naphthalene. The structure of the ruthenium sulfide catalyst can be tuned during sulfidation to achieve optimum performance according to the hydrodesulfurization or hydrogenation requirements of the reaction system.</description><identifier>ISSN: 0021-9517</identifier><identifier>EISSN: 1090-2694</identifier><identifier>DOI: 10.1016/j.jcat.2008.08.015</identifier><identifier>CODEN: JCTLA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Catalysis ; Catalysts ; Chemical reactions ; Chemistry ; Exact sciences and technology ; General and physical chemistry ; Ru/Al2O3 catalysts ; Ruthenium sulfide ; Sulfur ; Temperature ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; Thiophene hydrodesulfurization ; TPR-S</subject><ispartof>Journal of catalysis, 2008-11, Vol.260 (1), p.65-74</ispartof><rights>2008 Elsevier Inc.</rights><rights>2009 INIST-CNRS</rights><rights>Copyright © 2008 Elsevier B.V. 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Sulfidation in H2S/N2 generates a mixture of RuS2-pyrite and RuS2-amorphous. As the sulfidation temperature increases, more RuS2-pyrite is produced at the expense of RuS2-amorphous. The later is not stable and undergoes reduction in reaction conditions, producing a sulfur-depleted catalyst (S/Ru<2) with low HDS activity. In contrast, RuS2-pyrite resists the drastic reducing conditions prevailing during HDS and is responsible for the high HDS activity. The changes in the catalyst properties with sulfidation temperature produce an opposite trend in the hydrogenation activity of naphthalene. The structure of the ruthenium sulfide catalyst can be tuned during sulfidation to achieve optimum performance according to the hydrodesulfurization or hydrogenation requirements of the reaction system.</description><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemical reactions</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Ru/Al2O3 catalysts</subject><subject>Ruthenium sulfide</subject><subject>Sulfur</subject><subject>Temperature</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><subject>Thiophene hydrodesulfurization</subject><subject>TPR-S</subject><issn>0021-9517</issn><issn>1090-2694</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp9kF9LwzAUxYMoOKdfwKei-GbrvW2TJiCCDP_BQHD6HLIkhZStnUk62Le3ZcM3hQOXe_ndc-AQcomQISC7a7JGq5jlADwbhfSITBAEpDkT5TGZAOSYCorVKTkLoQFApJRPyMMi-l7H3tvbJES1dCsXd4lqTaJ0dNtx6erko1_kSeg3m85Ha5KuTdSqX7tWnZOTWq2CvTjMKfl6fvqcvabz95e32eM81SXFmC55VVOjbFGLqmBVpQwwDWCEheFiyrxkTNRcY4mKMVA1F9wUiJU2gouKFlNytffd-O67tyHKput9O0RKFLSkeQEwQNd_QhUUKEpgfKDyPaV9F4K3tdx4t1Z-JxHkWKZs5FimHMuUo3DMvzlYq6DVqvaq1S78fubAKZTFyN3vOTuUsXXWy6CdbbU1zlsdpencfzE_9r2H-A</recordid><startdate>20081115</startdate><enddate>20081115</enddate><creator>Castillo-Villalón, Perla</creator><creator>Ramírez, Jorge</creator><creator>Maugé, Françoise</creator><general>Elsevier Inc</general><general>Elsevier</general><general>Elsevier BV</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20081115</creationdate><title>Structure, stability and activity of RuS2 supported on alumina</title><author>Castillo-Villalón, Perla ; Ramírez, Jorge ; Maugé, Françoise</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c451t-b87f5dae3f973677ad06c00d9e0f97d424669f8c141a660af898d3117cd989753</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Catalysis</topic><topic>Catalysts</topic><topic>Chemical reactions</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Ru/Al2O3 catalysts</topic><topic>Ruthenium sulfide</topic><topic>Sulfur</topic><topic>Temperature</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>Thiophene hydrodesulfurization</topic><topic>TPR-S</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Castillo-Villalón, Perla</creatorcontrib><creatorcontrib>Ramírez, Jorge</creatorcontrib><creatorcontrib>Maugé, Françoise</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of catalysis</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Castillo-Villalón, Perla</au><au>Ramírez, Jorge</au><au>Maugé, Françoise</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structure, stability and activity of RuS2 supported on alumina</atitle><jtitle>Journal of catalysis</jtitle><date>2008-11-15</date><risdate>2008</risdate><volume>260</volume><issue>1</issue><spage>65</spage><epage>74</epage><pages>65-74</pages><issn>0021-9517</issn><eissn>1090-2694</eissn><coden>JCTLA5</coden><abstract>The relationships between the structure attained by alumina-supported RuS2 during sulfidation, the extent of desulfurization of the sulfided phase during HDS, and the hydrodesulfurization activity of the catalyst were studied by TPS, TPR-S, XRD, FT-IR of CO, and DRS–UV–Vis–NIR. Sulfidation in H2S/N2 generates a mixture of RuS2-pyrite and RuS2-amorphous. As the sulfidation temperature increases, more RuS2-pyrite is produced at the expense of RuS2-amorphous. The later is not stable and undergoes reduction in reaction conditions, producing a sulfur-depleted catalyst (S/Ru<2) with low HDS activity. In contrast, RuS2-pyrite resists the drastic reducing conditions prevailing during HDS and is responsible for the high HDS activity. The changes in the catalyst properties with sulfidation temperature produce an opposite trend in the hydrogenation activity of naphthalene. The structure of the ruthenium sulfide catalyst can be tuned during sulfidation to achieve optimum performance according to the hydrodesulfurization or hydrogenation requirements of the reaction system.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1016/j.jcat.2008.08.015</doi><tpages>10</tpages></addata></record> |
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| subjects | Catalysis Catalysts Chemical reactions Chemistry Exact sciences and technology General and physical chemistry Ru/Al2O3 catalysts Ruthenium sulfide Sulfur Temperature Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Thiophene hydrodesulfurization TPR-S |
| title | Structure, stability and activity of RuS2 supported on alumina |
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