Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.

Autores
Rivoira , Lorena Paola; Martínez , María Laura; Beltramone , Andrea Raquel; Martínez , María Laura
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Biomass pyrolysis results in fuel bio-oil which can be consider as a renewable petroleum alternative. Bio-oil obtained by this process presents high oxygen content, becoming into a corrosive and unstable fuel. Hydrodeoxygenation (HDO) is a catalytic treatment that improves the bio-oil characteristics. There are more than 400 organic compounds that can be found in bio oil. For that reason we selected guayacol (2-methoxyphenol ó 4-hydroxy-3-methoxybenzyl) as model compound to test the catalytic activity of the developed catalysts. The catalysts tested for hydrodeoxygenation (HDO) of guayacol to produce deoxygenated products such as benzene, toluene, ciclohexene and ciclohexane were platinum modified mesoporous SBA-15 and Ga-SBA 15. The synthetized catalysts were obtained by sol-gel method. Active platinum sites were incorporated by wet impregnation. The system reaction used for HDO is a 600 mL stirred autoclave (Parr Pressure Reactor 4536). Reaction conditions were carried out at 230°C and 12 atm of H2 under 500 rpm. Reactor feed consisted in 50 mL of a 1% w/v solution of guayacol in dodecane. Then, 200 mg of the catalyst was transferred to the reactor. Samples were taken every hour. Products were analysed with HP Series II GC and HP-5 capillary column and identified by GC/MS. Better catalytic results were obtained when Ga was introduced as heteroatom into the SBA-15 siliceous framework. Textural and structural properties of the Pt -supported mesoporous catalysts were determined along with the nature of the active site. The synthetized material were characterized before and after the incorporation of metal active site by XRD, HRTEM, SEM EDX, FTIR, XPS and N2 adsorption-desorption isotherms. Characterization results demonstrated that highly dispersed Pt species are responsible for the high activity in the guayacol conversion. The most active catalyst for HDO of guayacol was Pt/Ga-SBA-15 achieving 99 % of guayacol conversion in a relatively short time (4 h). Gallium atoms incorporated into the support modified the nature of the SBA-15 surface by conferring Bronsted and Lewis acidity. The acid sites are able to interact with the platinum active sites improving the activity of the catalyst. As consequence the gallium modified catalyst showed better dispersion of the Pt sites
Fil: Rivoira, Lorena Paola. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
Fil: Beltramone, Andrea Raquel. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
Materia
Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Attribution-NonCommercial-NoDerivatives 4.0 International
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/12526
Acceder
id RIAUTN_fe882b4d577636fa3b349748686bf761
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/12526
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.Rivoira , Lorena PaolaMartínez , María LauraBeltramone , Andrea RaquelMartínez , María LauraHydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.Biomass pyrolysis results in fuel bio-oil which can be consider as a renewable petroleum alternative. Bio-oil obtained by this process presents high oxygen content, becoming into a corrosive and unstable fuel. Hydrodeoxygenation (HDO) is a catalytic treatment that improves the bio-oil characteristics. There are more than 400 organic compounds that can be found in bio oil. For that reason we selected guayacol (2-methoxyphenol ó 4-hydroxy-3-methoxybenzyl) as model compound to test the catalytic activity of the developed catalysts. The catalysts tested for hydrodeoxygenation (HDO) of guayacol to produce deoxygenated products such as benzene, toluene, ciclohexene and ciclohexane were platinum modified mesoporous SBA-15 and Ga-SBA 15. The synthetized catalysts were obtained by sol-gel method. Active platinum sites were incorporated by wet impregnation. The system reaction used for HDO is a 600 mL stirred autoclave (Parr Pressure Reactor 4536). Reaction conditions were carried out at 230°C and 12 atm of H2 under 500 rpm. Reactor feed consisted in 50 mL of a 1% w/v solution of guayacol in dodecane. Then, 200 mg of the catalyst was transferred to the reactor. Samples were taken every hour. Products were analysed with HP Series II GC and HP-5 capillary column and identified by GC/MS. Better catalytic results were obtained when Ga was introduced as heteroatom into the SBA-15 siliceous framework. Textural and structural properties of the Pt -supported mesoporous catalysts were determined along with the nature of the active site. The synthetized material were characterized before and after the incorporation of metal active site by XRD, HRTEM, SEM EDX, FTIR, XPS and N2 adsorption-desorption isotherms. Characterization results demonstrated that highly dispersed Pt species are responsible for the high activity in the guayacol conversion. The most active catalyst for HDO of guayacol was Pt/Ga-SBA-15 achieving 99 % of guayacol conversion in a relatively short time (4 h). Gallium atoms incorporated into the support modified the nature of the SBA-15 surface by conferring Bronsted and Lewis acidity. The acid sites are able to interact with the platinum active sites improving the activity of the catalyst. As consequence the gallium modified catalyst showed better dispersion of the Pt sitesFil: Rivoira, Lorena Paola. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.Fil: Beltramone, Andrea Raquel. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.Univesidsad Tecnológica Nacional.2025-03-27T20:01:00Z2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfXXVII Congreso Iberoamericano de Catálisis (CICAT).https://hdl.handle.net/20.500.12272/12526enginfo:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Rivoiraq, Lorena Paola; Martínez, María Laura; Beltramone, Andrea Raquel.https://creativecommons.org/licenses/by-nc-nd/4.0/reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:44:38Zoai:ria.utn.edu.ar:20.500.12272/12526instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:44:40.002Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
spellingShingle Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
Rivoira , Lorena Paola
Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title_short Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title_full Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title_fullStr Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title_full_unstemmed Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
title_sort Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
dc.creator.none.fl_str_mv Rivoira , Lorena Paola
Martínez , María Laura
Beltramone , Andrea Raquel
Martínez , María Laura
author Rivoira , Lorena Paola
author_facet Rivoira , Lorena Paola
Martínez , María Laura
Beltramone , Andrea Raquel
author_role author
author2 Martínez , María Laura
Beltramone , Andrea Raquel
author2_role author
author
dc.subject.none.fl_str_mv Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
topic Hydrodeoxygenation of guayacol over platinum modified mesoporous catalysts.
dc.description.none.fl_txt_mv Biomass pyrolysis results in fuel bio-oil which can be consider as a renewable petroleum alternative. Bio-oil obtained by this process presents high oxygen content, becoming into a corrosive and unstable fuel. Hydrodeoxygenation (HDO) is a catalytic treatment that improves the bio-oil characteristics. There are more than 400 organic compounds that can be found in bio oil. For that reason we selected guayacol (2-methoxyphenol ó 4-hydroxy-3-methoxybenzyl) as model compound to test the catalytic activity of the developed catalysts. The catalysts tested for hydrodeoxygenation (HDO) of guayacol to produce deoxygenated products such as benzene, toluene, ciclohexene and ciclohexane were platinum modified mesoporous SBA-15 and Ga-SBA 15. The synthetized catalysts were obtained by sol-gel method. Active platinum sites were incorporated by wet impregnation. The system reaction used for HDO is a 600 mL stirred autoclave (Parr Pressure Reactor 4536). Reaction conditions were carried out at 230°C and 12 atm of H2 under 500 rpm. Reactor feed consisted in 50 mL of a 1% w/v solution of guayacol in dodecane. Then, 200 mg of the catalyst was transferred to the reactor. Samples were taken every hour. Products were analysed with HP Series II GC and HP-5 capillary column and identified by GC/MS. Better catalytic results were obtained when Ga was introduced as heteroatom into the SBA-15 siliceous framework. Textural and structural properties of the Pt -supported mesoporous catalysts were determined along with the nature of the active site. The synthetized material were characterized before and after the incorporation of metal active site by XRD, HRTEM, SEM EDX, FTIR, XPS and N2 adsorption-desorption isotherms. Characterization results demonstrated that highly dispersed Pt species are responsible for the high activity in the guayacol conversion. The most active catalyst for HDO of guayacol was Pt/Ga-SBA-15 achieving 99 % of guayacol conversion in a relatively short time (4 h). Gallium atoms incorporated into the support modified the nature of the SBA-15 surface by conferring Bronsted and Lewis acidity. The acid sites are able to interact with the platinum active sites improving the activity of the catalyst. As consequence the gallium modified catalyst showed better dispersion of the Pt sites
Fil: Rivoira, Lorena Paola. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
Fil: Beltramone, Andrea Raquel. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación Nanociencia y Nanotecnología; Argentina.
description Biomass pyrolysis results in fuel bio-oil which can be consider as a renewable petroleum alternative. Bio-oil obtained by this process presents high oxygen content, becoming into a corrosive and unstable fuel. Hydrodeoxygenation (HDO) is a catalytic treatment that improves the bio-oil characteristics. There are more than 400 organic compounds that can be found in bio oil. For that reason we selected guayacol (2-methoxyphenol ó 4-hydroxy-3-methoxybenzyl) as model compound to test the catalytic activity of the developed catalysts. The catalysts tested for hydrodeoxygenation (HDO) of guayacol to produce deoxygenated products such as benzene, toluene, ciclohexene and ciclohexane were platinum modified mesoporous SBA-15 and Ga-SBA 15. The synthetized catalysts were obtained by sol-gel method. Active platinum sites were incorporated by wet impregnation. The system reaction used for HDO is a 600 mL stirred autoclave (Parr Pressure Reactor 4536). Reaction conditions were carried out at 230°C and 12 atm of H2 under 500 rpm. Reactor feed consisted in 50 mL of a 1% w/v solution of guayacol in dodecane. Then, 200 mg of the catalyst was transferred to the reactor. Samples were taken every hour. Products were analysed with HP Series II GC and HP-5 capillary column and identified by GC/MS. Better catalytic results were obtained when Ga was introduced as heteroatom into the SBA-15 siliceous framework. Textural and structural properties of the Pt -supported mesoporous catalysts were determined along with the nature of the active site. The synthetized material were characterized before and after the incorporation of metal active site by XRD, HRTEM, SEM EDX, FTIR, XPS and N2 adsorption-desorption isotherms. Characterization results demonstrated that highly dispersed Pt species are responsible for the high activity in the guayacol conversion. The most active catalyst for HDO of guayacol was Pt/Ga-SBA-15 achieving 99 % of guayacol conversion in a relatively short time (4 h). Gallium atoms incorporated into the support modified the nature of the SBA-15 surface by conferring Bronsted and Lewis acidity. The acid sites are able to interact with the platinum active sites improving the activity of the catalyst. As consequence the gallium modified catalyst showed better dispersion of the Pt sites
publishDate 2018
dc.date.none.fl_str_mv 2018
2025-03-27T20:01:00Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv XXVII Congreso Iberoamericano de Catálisis (CICAT).
https://hdl.handle.net/20.500.12272/12526
identifier_str_mv XXVII Congreso Iberoamericano de Catálisis (CICAT).
url https://hdl.handle.net/20.500.12272/12526
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
Rivoiraq, Lorena Paola; Martínez, María Laura; Beltramone, Andrea Raquel.
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
Rivoiraq, Lorena Paola; Martínez, María Laura; Beltramone, Andrea Raquel.
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Univesidsad Tecnológica Nacional.
publisher.none.fl_str_mv Univesidsad Tecnológica Nacional.
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.265058

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