Active phase genesis of NiW hydrocracking catalysts based on nickel salt heteropolytungstate: Comparison with reference catalyst
. [Display omitted] ▸ Study of HCK catalysts sulfidation by Raman, XPS, HRTEM and EPR. ▸ Higher quantity of NiWS for HPA based catalyst than for conventional NiW catalysts. ▸ Evidence of sulfidation intermediates WS3 and WOxSy. ▸ Ni-WOxSy species proposed as NiWS phase precursors. The sulfidation of...
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| Veröffentlicht in: | Applied catalysis. B, Environmental Environmental, 2012-09, Vol.126, p.55-63 |
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| container_title | Applied catalysis. B, Environmental |
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| creator | Tayeb, Karima Ben Lamonier, Carole Lancelot, Christine Fournier, Michel Bonduelle-Skrzypczak, Audrey Bertoncini, Fabrice |
| description | . [Display omitted]
▸ Study of HCK catalysts sulfidation by Raman, XPS, HRTEM and EPR. ▸ Higher quantity of NiWS for HPA based catalyst than for conventional NiW catalysts. ▸ Evidence of sulfidation intermediates WS3 and WOxSy. ▸ Ni-WOxSy species proposed as NiWS phase precursors.
The sulfidation of supported NiW hydrotreating catalysts is followed by a combination of X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), Raman and electron paramagnetic resonance (EPR) spectroscopy. In this work, we compared two catalysts prepared by incipient wetness impregnation from different precursors. The first one is an innovating catalyst prepared with the nickel salt of the derived lacunary Keggin heteropolyanion (HPA) Ni4SiW11O39 and the second one is a conventional catalyst synthesized from ammonium metatungstate and nickel nitrate. The results show for both catalysts that the sulfidation of nickel and tungsten elements does not occur at the same temperature. However, a better sulfidation of tungsten and nickel atoms respectively to WS2 and NiWS phases is observed at 400°C for HPA precursor compared to conventional catalyst, highlighting the benefit of HPA starting material. |
| doi_str_mv | 10.1016/j.apcatb.2012.06.025 |
| format | Article |
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▸ Study of HCK catalysts sulfidation by Raman, XPS, HRTEM and EPR. ▸ Higher quantity of NiWS for HPA based catalyst than for conventional NiW catalysts. ▸ Evidence of sulfidation intermediates WS3 and WOxSy. ▸ Ni-WOxSy species proposed as NiWS phase precursors.
The sulfidation of supported NiW hydrotreating catalysts is followed by a combination of X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), Raman and electron paramagnetic resonance (EPR) spectroscopy. In this work, we compared two catalysts prepared by incipient wetness impregnation from different precursors. The first one is an innovating catalyst prepared with the nickel salt of the derived lacunary Keggin heteropolyanion (HPA) Ni4SiW11O39 and the second one is a conventional catalyst synthesized from ammonium metatungstate and nickel nitrate. The results show for both catalysts that the sulfidation of nickel and tungsten elements does not occur at the same temperature. However, a better sulfidation of tungsten and nickel atoms respectively to WS2 and NiWS phases is observed at 400°C for HPA precursor compared to conventional catalyst, highlighting the benefit of HPA starting material.</description><identifier>ISSN: 0926-3373</identifier><identifier>EISSN: 1873-3883</identifier><identifier>DOI: 10.1016/j.apcatb.2012.06.025</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Catalysis ; Chemistry ; EPR ; Exact sciences and technology ; General and physical chemistry ; Heteropolyanion ; HRTEM ; NiW catalysts ; Raman ; Sulfidation ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; WS2 ; XPS</subject><ispartof>Applied catalysis. B, Environmental, 2012-09, Vol.126, p.55-63</ispartof><rights>2012 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-30e197aa9d9026be8036f2dc9f62df3d26defd86ae40a9a61c0c58bbdaa98333</citedby><cites>FETCH-LOGICAL-c369t-30e197aa9d9026be8036f2dc9f62df3d26defd86ae40a9a61c0c58bbdaa98333</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0926337312002925$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26362880$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Tayeb, Karima Ben</creatorcontrib><creatorcontrib>Lamonier, Carole</creatorcontrib><creatorcontrib>Lancelot, Christine</creatorcontrib><creatorcontrib>Fournier, Michel</creatorcontrib><creatorcontrib>Bonduelle-Skrzypczak, Audrey</creatorcontrib><creatorcontrib>Bertoncini, Fabrice</creatorcontrib><title>Active phase genesis of NiW hydrocracking catalysts based on nickel salt heteropolytungstate: Comparison with reference catalyst</title><title>Applied catalysis. B, Environmental</title><description>. [Display omitted]
▸ Study of HCK catalysts sulfidation by Raman, XPS, HRTEM and EPR. ▸ Higher quantity of NiWS for HPA based catalyst than for conventional NiW catalysts. ▸ Evidence of sulfidation intermediates WS3 and WOxSy. ▸ Ni-WOxSy species proposed as NiWS phase precursors.
The sulfidation of supported NiW hydrotreating catalysts is followed by a combination of X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), Raman and electron paramagnetic resonance (EPR) spectroscopy. In this work, we compared two catalysts prepared by incipient wetness impregnation from different precursors. The first one is an innovating catalyst prepared with the nickel salt of the derived lacunary Keggin heteropolyanion (HPA) Ni4SiW11O39 and the second one is a conventional catalyst synthesized from ammonium metatungstate and nickel nitrate. The results show for both catalysts that the sulfidation of nickel and tungsten elements does not occur at the same temperature. However, a better sulfidation of tungsten and nickel atoms respectively to WS2 and NiWS phases is observed at 400°C for HPA precursor compared to conventional catalyst, highlighting the benefit of HPA starting material.</description><subject>Catalysis</subject><subject>Chemistry</subject><subject>EPR</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heteropolyanion</subject><subject>HRTEM</subject><subject>NiW catalysts</subject><subject>Raman</subject><subject>Sulfidation</subject><subject>Theory of reactions, general kinetics. Catalysis. 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Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>WS2</topic><topic>XPS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tayeb, Karima Ben</creatorcontrib><creatorcontrib>Lamonier, Carole</creatorcontrib><creatorcontrib>Lancelot, Christine</creatorcontrib><creatorcontrib>Fournier, Michel</creatorcontrib><creatorcontrib>Bonduelle-Skrzypczak, Audrey</creatorcontrib><creatorcontrib>Bertoncini, Fabrice</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Applied catalysis. B, Environmental</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tayeb, Karima Ben</au><au>Lamonier, Carole</au><au>Lancelot, Christine</au><au>Fournier, Michel</au><au>Bonduelle-Skrzypczak, Audrey</au><au>Bertoncini, Fabrice</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Active phase genesis of NiW hydrocracking catalysts based on nickel salt heteropolytungstate: Comparison with reference catalyst</atitle><jtitle>Applied catalysis. B, Environmental</jtitle><date>2012-09-25</date><risdate>2012</risdate><volume>126</volume><spage>55</spage><epage>63</epage><pages>55-63</pages><issn>0926-3373</issn><eissn>1873-3883</eissn><abstract>. [Display omitted]
▸ Study of HCK catalysts sulfidation by Raman, XPS, HRTEM and EPR. ▸ Higher quantity of NiWS for HPA based catalyst than for conventional NiW catalysts. ▸ Evidence of sulfidation intermediates WS3 and WOxSy. ▸ Ni-WOxSy species proposed as NiWS phase precursors.
The sulfidation of supported NiW hydrotreating catalysts is followed by a combination of X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM), Raman and electron paramagnetic resonance (EPR) spectroscopy. In this work, we compared two catalysts prepared by incipient wetness impregnation from different precursors. The first one is an innovating catalyst prepared with the nickel salt of the derived lacunary Keggin heteropolyanion (HPA) Ni4SiW11O39 and the second one is a conventional catalyst synthesized from ammonium metatungstate and nickel nitrate. The results show for both catalysts that the sulfidation of nickel and tungsten elements does not occur at the same temperature. However, a better sulfidation of tungsten and nickel atoms respectively to WS2 and NiWS phases is observed at 400°C for HPA precursor compared to conventional catalyst, highlighting the benefit of HPA starting material.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.apcatb.2012.06.025</doi><tpages>9</tpages></addata></record> |
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| subjects | Catalysis Chemistry EPR Exact sciences and technology General and physical chemistry Heteropolyanion HRTEM NiW catalysts Raman Sulfidation Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry WS2 XPS |
| title | Active phase genesis of NiW hydrocracking catalysts based on nickel salt heteropolytungstate: Comparison with reference catalyst |
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