Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts
In this paper NiW/γ-Al2O3catalysts were prepared by consecutive impregnation of a W/γ-Al2O3 catalyst with an aqueous solution of nickel salt. The structural control of the nickel ion precursor in the impregnation solution was achieved by the addition of 1, 2-cyclohexanediamine-N, N, N’, N’-tetraacet...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/231405 |
| Acceso en línea: | http://hdl.handle.net/10261/231405 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydrodesulfurization 1, 2-cyclohexanediamine-N, N, N”, N”-tetraacetic acid Nickel Tungsten Adsorbed CO Thiophene |
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Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalystsSantolalla-Vargas, C. E.Santes, VictorSuárez Toriello, V. A.Reyes, José Antonio de losPawelec, BárbaraGarcía Fierro, José LuisDomínguez Garcia, ElizabethOliviero, L.Maugé, F.Hydrodesulfurization1, 2-cyclohexanediamine-N, N, N”, N”-tetraacetic acidNickelTungstenAdsorbed COThiopheneIn this paper NiW/γ-Al2O3catalysts were prepared by consecutive impregnation of a W/γ-Al2O3 catalyst with an aqueous solution of nickel salt. The structural control of the nickel ion precursor in the impregnation solution was achieved by the addition of 1, 2-cyclohexanediamine-N, N, N’, N’-tetraacetic acid (CyDTA) as a chelating agent at different pH. The influence of the sulfidation pressure (1 bar vs 40 bar) on the activity and structure of the NiW catalysts was investigated. The catalysts performances were tested in hydrodesulfurization (HDS) of thiophene after sulfidation at atmospheric or high pressure. The catalysts were characterized by X-Ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR) and infrared spectroscopy of adsorbed CO (IR/CO) to explain the modification in surface species composition due to the chelating agent CyDTA and sulfiding conditions. NiW catalysts prepared in presence of CydTA and sulfided under high pressure displayed the highest HDS activity. These two factors enhanced the sulfidation degree of W-based species as characterized by XPS. A linear correlation was found between the HDS activity and the sulfidation degree. In addition, chelating agent addition induced a decrease on metal-support interaction, as pointed out by TPR, and strongly favored the creation of CUS sites on the NiWS phase as seen by IR/CO. All these features favored a high catalytic activity. In addition, high pressure sulfidation not only leads to more active NiW catalysts but improved the butene-over-butane ratio.J.A. de los Reyes and V.A. Suarez Toriello acknowledge CONACYT-SENER funding for financial support. The authors thank financial support from Instituto Politécnico Nacional (Proyecto SIP 20201116 and 20201629) and the Mexican National Council for Science and Technology (CONACyT; project CB-2017-2018 # A1-S-32418).Peer reviewedElsevier BVInstituto Politécnico Nacional (México)Consejo Nacional de Ciencia y Tecnología (México)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120202021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/231405reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.cattod.2020.07.015Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2314052026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| title |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| spellingShingle |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts Santolalla-Vargas, C. E. Hydrodesulfurization 1, 2-cyclohexanediamine-N, N, N”, N”-tetraacetic acid Nickel Tungsten Adsorbed CO Thiophene |
| title_short |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| title_full |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| title_fullStr |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| title_full_unstemmed |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| title_sort |
Effect of sulfidation pressure on the structure and activity of Ni(CyDTA)W/γ-Al2O3 hydrodesulfurization catalysts |
| dc.creator.none.fl_str_mv |
Santolalla-Vargas, C. E. Santes, Victor Suárez Toriello, V. A. Reyes, José Antonio de los Pawelec, Bárbara García Fierro, José Luis Domínguez Garcia, Elizabeth Oliviero, L. Maugé, F. |
| author |
Santolalla-Vargas, C. E. |
| author_facet |
Santolalla-Vargas, C. E. Santes, Victor Suárez Toriello, V. A. Reyes, José Antonio de los Pawelec, Bárbara García Fierro, José Luis Domínguez Garcia, Elizabeth Oliviero, L. Maugé, F. |
| author_role |
author |
| author2 |
Santes, Victor Suárez Toriello, V. A. Reyes, José Antonio de los Pawelec, Bárbara García Fierro, José Luis Domínguez Garcia, Elizabeth Oliviero, L. Maugé, F. |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Instituto Politécnico Nacional (México) Consejo Nacional de Ciencia y Tecnología (México) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Hydrodesulfurization 1, 2-cyclohexanediamine-N, N, N”, N”-tetraacetic acid Nickel Tungsten Adsorbed CO Thiophene |
| topic |
Hydrodesulfurization 1, 2-cyclohexanediamine-N, N, N”, N”-tetraacetic acid Nickel Tungsten Adsorbed CO Thiophene |
| description |
In this paper NiW/γ-Al2O3catalysts were prepared by consecutive impregnation of a W/γ-Al2O3 catalyst with an aqueous solution of nickel salt. The structural control of the nickel ion precursor in the impregnation solution was achieved by the addition of 1, 2-cyclohexanediamine-N, N, N’, N’-tetraacetic acid (CyDTA) as a chelating agent at different pH. The influence of the sulfidation pressure (1 bar vs 40 bar) on the activity and structure of the NiW catalysts was investigated. The catalysts performances were tested in hydrodesulfurization (HDS) of thiophene after sulfidation at atmospheric or high pressure. The catalysts were characterized by X-Ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR) and infrared spectroscopy of adsorbed CO (IR/CO) to explain the modification in surface species composition due to the chelating agent CyDTA and sulfiding conditions. NiW catalysts prepared in presence of CydTA and sulfided under high pressure displayed the highest HDS activity. These two factors enhanced the sulfidation degree of W-based species as characterized by XPS. A linear correlation was found between the HDS activity and the sulfidation degree. In addition, chelating agent addition induced a decrease on metal-support interaction, as pointed out by TPR, and strongly favored the creation of CUS sites on the NiWS phase as seen by IR/CO. All these features favored a high catalytic activity. In addition, high pressure sulfidation not only leads to more active NiW catalysts but improved the butene-over-butane ratio. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2021 2021 2021 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Postprint info:eu-repo/semantics/acceptedVersion |
| format |
article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/231405 |
| url |
http://hdl.handle.net/10261/231405 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1016/j.cattod.2020.07.015 Sí |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
Elsevier BV |
| publisher.none.fl_str_mv |
Elsevier BV |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869425707055054848 |
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15,811543 |