HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts

Autores
Vallés, Verónica Alejandra; Yanika, Sa-ngasaeng; Martínez, María Laura; Siriporn, Jongpatiwut; Beltramone, Andrea Raquel
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Iridium catalyst using different zirconium modified-SBA-15 supports were tested in the HDT of tetralin and typical sulfur and nitrogen compounds present in diesel feed. The zirconium modified-SBA-15 supports were synthesized by sol-gel method using two sources of zirconium, zirconyl chloride and zirconium (IV) propoXide. Regarding XRD, N2 adsorption isotherms and TEM, we obtained better textural and structural properties using the alkoXide, especially when lactic acid was added in order to decrease the hydrolysis rate of zirconium propoXide. In addition, XPS and DRUV-Vis demonstrated that zirconium was incorporated mainly as tetrahedral Zr4+ species NH3-TPD showed that higher acidity is observed when tetrahedral Zr4+ species are present. Iridium dispersion was determined by TEM and H2-chemisorption and reducibility by XPS and TPR. Among the catalysts prepared, the catalyst synthesized using zirconium propoXide and lactic acid presented the highest dispersion, lowest cluster size and lowest reduction temperature. Consequently, this was the most active catalyst for the hydrogenation of tetralin, the HDN of indole and quinoline and the HDS of dibenzothiophene (DBT) and 4,6- dimethyldibenzothiophene (4,6-DMDBT). The presence of Zr+4 had a remarkable effect on the dispersion and reducibility capacity of the iridium actives species. In addition, the presence of moderate acidity in this material gives the best catalyst for HDN and HDS in the studied conditions. The inhibition effect of the sulfur and nitrogen compounds over tetralin hydrogenation was studied using individual feeds and a miXture feed. We observe that 4,6-DMDBT and quinoline were the most refractory compounds and they showed the highest inhibition effect. Tetralin hydrogenation was stronger inhibited when using the miXture feed compared with the individual feeds. This can be explained in terms of the competition between the different compounds that retard the rate of hydrogenation of tetralin. However, a high conversion of tetralin was achieved even when 300 ppm of S or N was
Fil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.
Fil: Beltramone, Andrea R.. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Peer Reviewed
Materia
Direct synthesis
Zirconium propoXide
Acid lactic
Hydrodenitrogenation
Hydrodesulfurization
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-04-15T23:25:48Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/10529
Acceder
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oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/10529
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalystsVallés, Verónica AlejandraYanika, Sa-ngasaengMartínez, María LauraSiriporn, JongpatiwutBeltramone, Andrea RaquelDirect synthesisZirconium propoXideAcid lacticHydrodenitrogenationHydrodesulfurizationIridium catalyst using different zirconium modified-SBA-15 supports were tested in the HDT of tetralin and typical sulfur and nitrogen compounds present in diesel feed. The zirconium modified-SBA-15 supports were synthesized by sol-gel method using two sources of zirconium, zirconyl chloride and zirconium (IV) propoXide. Regarding XRD, N2 adsorption isotherms and TEM, we obtained better textural and structural properties using the alkoXide, especially when lactic acid was added in order to decrease the hydrolysis rate of zirconium propoXide. In addition, XPS and DRUV-Vis demonstrated that zirconium was incorporated mainly as tetrahedral Zr4+ species NH3-TPD showed that higher acidity is observed when tetrahedral Zr4+ species are present. Iridium dispersion was determined by TEM and H2-chemisorption and reducibility by XPS and TPR. Among the catalysts prepared, the catalyst synthesized using zirconium propoXide and lactic acid presented the highest dispersion, lowest cluster size and lowest reduction temperature. Consequently, this was the most active catalyst for the hydrogenation of tetralin, the HDN of indole and quinoline and the HDS of dibenzothiophene (DBT) and 4,6- dimethyldibenzothiophene (4,6-DMDBT). The presence of Zr+4 had a remarkable effect on the dispersion and reducibility capacity of the iridium actives species. In addition, the presence of moderate acidity in this material gives the best catalyst for HDN and HDS in the studied conditions. The inhibition effect of the sulfur and nitrogen compounds over tetralin hydrogenation was studied using individual feeds and a miXture feed. We observe that 4,6-DMDBT and quinoline were the most refractory compounds and they showed the highest inhibition effect. Tetralin hydrogenation was stronger inhibited when using the miXture feed compared with the individual feeds. This can be explained in terms of the competition between the different compounds that retard the rate of hydrogenation of tetralin. However, a high conversion of tetralin was achieved even when 300 ppm of S or N wasFil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.Fil: Beltramone, Andrea R.. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Peer Reviewed2024-04-15T23:25:48Z2024-04-15T23:25:48Z2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfhttp://hdl.handle.net/20.500.12272/10529-enginfo:eu-repo/semantics/openAccess2024-04-15T23:25:48Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalVallés, Verónica Alejandrahttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:44:32Zoai:ria.utn.edu.ar:20.500.12272/10529instacron: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 12:44:33.603Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
title HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
spellingShingle HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
Vallés, Verónica Alejandra
Direct synthesis
Zirconium propoXide
Acid lactic
Hydrodenitrogenation
Hydrodesulfurization
title_short HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
title_full HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
title_fullStr HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
title_full_unstemmed HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
title_sort HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts
dc.creator.none.fl_str_mv Vallés, Verónica Alejandra
Yanika, Sa-ngasaeng
Martínez, María Laura
Siriporn, Jongpatiwut
Beltramone, Andrea Raquel
author Vallés, Verónica Alejandra
author_facet Vallés, Verónica Alejandra
Yanika, Sa-ngasaeng
Martínez, María Laura
Siriporn, Jongpatiwut
Beltramone, Andrea Raquel
author_role author
author2 Yanika, Sa-ngasaeng
Martínez, María Laura
Siriporn, Jongpatiwut
Beltramone, Andrea Raquel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Direct synthesis
Zirconium propoXide
Acid lactic
Hydrodenitrogenation
Hydrodesulfurization
topic Direct synthesis
Zirconium propoXide
Acid lactic
Hydrodenitrogenation
Hydrodesulfurization
dc.description.none.fl_txt_mv Iridium catalyst using different zirconium modified-SBA-15 supports were tested in the HDT of tetralin and typical sulfur and nitrogen compounds present in diesel feed. The zirconium modified-SBA-15 supports were synthesized by sol-gel method using two sources of zirconium, zirconyl chloride and zirconium (IV) propoXide. Regarding XRD, N2 adsorption isotherms and TEM, we obtained better textural and structural properties using the alkoXide, especially when lactic acid was added in order to decrease the hydrolysis rate of zirconium propoXide. In addition, XPS and DRUV-Vis demonstrated that zirconium was incorporated mainly as tetrahedral Zr4+ species NH3-TPD showed that higher acidity is observed when tetrahedral Zr4+ species are present. Iridium dispersion was determined by TEM and H2-chemisorption and reducibility by XPS and TPR. Among the catalysts prepared, the catalyst synthesized using zirconium propoXide and lactic acid presented the highest dispersion, lowest cluster size and lowest reduction temperature. Consequently, this was the most active catalyst for the hydrogenation of tetralin, the HDN of indole and quinoline and the HDS of dibenzothiophene (DBT) and 4,6- dimethyldibenzothiophene (4,6-DMDBT). The presence of Zr+4 had a remarkable effect on the dispersion and reducibility capacity of the iridium actives species. In addition, the presence of moderate acidity in this material gives the best catalyst for HDN and HDS in the studied conditions. The inhibition effect of the sulfur and nitrogen compounds over tetralin hydrogenation was studied using individual feeds and a miXture feed. We observe that 4,6-DMDBT and quinoline were the most refractory compounds and they showed the highest inhibition effect. Tetralin hydrogenation was stronger inhibited when using the miXture feed compared with the individual feeds. This can be explained in terms of the competition between the different compounds that retard the rate of hydrogenation of tetralin. However, a high conversion of tetralin was achieved even when 300 ppm of S or N was
Fil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.
Fil: Beltramone, Andrea R.. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Peer Reviewed
description Iridium catalyst using different zirconium modified-SBA-15 supports were tested in the HDT of tetralin and typical sulfur and nitrogen compounds present in diesel feed. The zirconium modified-SBA-15 supports were synthesized by sol-gel method using two sources of zirconium, zirconyl chloride and zirconium (IV) propoXide. Regarding XRD, N2 adsorption isotherms and TEM, we obtained better textural and structural properties using the alkoXide, especially when lactic acid was added in order to decrease the hydrolysis rate of zirconium propoXide. In addition, XPS and DRUV-Vis demonstrated that zirconium was incorporated mainly as tetrahedral Zr4+ species NH3-TPD showed that higher acidity is observed when tetrahedral Zr4+ species are present. Iridium dispersion was determined by TEM and H2-chemisorption and reducibility by XPS and TPR. Among the catalysts prepared, the catalyst synthesized using zirconium propoXide and lactic acid presented the highest dispersion, lowest cluster size and lowest reduction temperature. Consequently, this was the most active catalyst for the hydrogenation of tetralin, the HDN of indole and quinoline and the HDS of dibenzothiophene (DBT) and 4,6- dimethyldibenzothiophene (4,6-DMDBT). The presence of Zr+4 had a remarkable effect on the dispersion and reducibility capacity of the iridium actives species. In addition, the presence of moderate acidity in this material gives the best catalyst for HDN and HDS in the studied conditions. The inhibition effect of the sulfur and nitrogen compounds over tetralin hydrogenation was studied using individual feeds and a miXture feed. We observe that 4,6-DMDBT and quinoline were the most refractory compounds and they showed the highest inhibition effect. Tetralin hydrogenation was stronger inhibited when using the miXture feed compared with the individual feeds. This can be explained in terms of the competition between the different compounds that retard the rate of hydrogenation of tetralin. However, a high conversion of tetralin was achieved even when 300 ppm of S or N was
publishDate 2018
dc.date.none.fl_str_mv 2018
2024-04-15T23:25:48Z
2024-04-15T23:25:48Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12272/10529
-
url http://hdl.handle.net/20.500.12272/10529
identifier_str_mv -
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-04-15T23:25:48Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Vallés, Verónica Alejandra
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-04-15T23:25:48Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Vallés, Verónica Alejandra
https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv pdf
application/pdf
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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