Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors

Al-MCM-41 (SiO2/Al2O3=200) materials from various Aland Si sources were synthesized. The calcined solids (823 K) werecharacterized by N2 physisorption, X-ray diffraction and surface aciditymeasurements. The sample from tetraethyl orthosilicate-Al(SO4)3had decreased surface area (836 m2/g) and pore v...

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Authors: Agileo Hernández, José G. Pacheco, María C. Barrera, José Escobar, José A. de los Reyes
Format: article
Status:Published version
Publication Date:2004
Country:México
Institution:Universidad Autónoma Metropolitana
Repository:Redalyc-UAM
OAI Identifier:oai:redalyc.org:47548410
Online Access:https://www.redalyc.org/articulo.oa?id=47548410
Access Level:Open access
Keyword:Química
Al
MCM41
CoMo catalyst
hydrothermal synthesis
dibenzothiophene hydrodesulfurization
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oai_identifier_str oai:redalyc.org:47548410
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network_name_str México
repository_id_str
spelling Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursorsAgileo HernándezJosé G. PachecoMaría C. BarreraJosé EscobarJosé A. de los ReyesQuímicaAlMCM41CoMo catalysthydrothermal synthesisdibenzothiophene hydrodesulfurizationAl-MCM-41 (SiO2/Al2O3=200) materials from various Aland Si sources were synthesized. The calcined solids (823 K) werecharacterized by N2 physisorption, X-ray diffraction and surface aciditymeasurements. The sample from tetraethyl orthosilicate-Al(SO4)3had decreased surface area (836 m2/g) and pore volume (0.88 cm3/g),meanwhile the lowest amount of Al3+ incorporated into the MCM41walls was registered when SiO2-boehmite was used as precursor. Co,Mo and P (~3, ~12.5 and ~1.6 weight %, respectively) were simultaneouslyimpregnated on Al-MCM41. Surface acidity was notablyincreased after impregnation, probably by the contribution of PO43-groups deposited. After sulfiding (H2S/H2, 673 K), the oxidic impregnatedprecursor having both the best texture and the highest proportionof octahedral Mo6+ (the one supported on Al-MCM41 fromSiO2-Al(SO4)3) was ~30% more active in dibenzothiophenehydrodesulfurization (HDS) than an Al2O3-supported commercialformulation of similar Co-Mo-P loading. For the Al-MCM41-supportedcatalyst, the high HDS activity and predominant selectivity tobiphenyl suggested good Mo promotion by Co.Sociedad Química de México2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf1870-249Xhttps://www.redalyc.org/articulo.oa?id=47548410Journal of the Mexican Chemical Society (México) Num.4 Vol.48reponame:Redalyc-UAMinstname:Universidad Autónoma Metropolitanainstacron:UAMenhttp://www.redalyc.org/revista.oa?id=475Journal of the Mexican Chemical Societyinfo:eu-repo/semantics/openAccessoai:redalyc.org:475484102025-03-05T19:09:08Z
dc.title.none.fl_str_mv Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
title Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
spellingShingle Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
Agileo Hernández
Química
Al
MCM41
CoMo catalyst
hydrothermal synthesis
dibenzothiophene hydrodesulfurization
title_short Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
title_full Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
title_fullStr Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
title_full_unstemmed Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
title_sort Synthesis and characterization of simultaneously-impregnated Co-Mo-P on Al-MCM41. Effect of support precursors
dc.creator.none.fl_str_mv Agileo Hernández
José G. Pacheco
María C. Barrera
José Escobar
José A. de los Reyes
author Agileo Hernández
author_facet Agileo Hernández
José G. Pacheco
María C. Barrera
José Escobar
José A. de los Reyes
author_role author
author2 José G. Pacheco
María C. Barrera
José Escobar
José A. de los Reyes
author2_role author
author
author
author
dc.subject.none.fl_str_mv Química
Al
MCM41
CoMo catalyst
hydrothermal synthesis
dibenzothiophene hydrodesulfurization
topic Química
Al
MCM41
CoMo catalyst
hydrothermal synthesis
dibenzothiophene hydrodesulfurization
description Al-MCM-41 (SiO2/Al2O3=200) materials from various Aland Si sources were synthesized. The calcined solids (823 K) werecharacterized by N2 physisorption, X-ray diffraction and surface aciditymeasurements. The sample from tetraethyl orthosilicate-Al(SO4)3had decreased surface area (836 m2/g) and pore volume (0.88 cm3/g),meanwhile the lowest amount of Al3+ incorporated into the MCM41walls was registered when SiO2-boehmite was used as precursor. Co,Mo and P (~3, ~12.5 and ~1.6 weight %, respectively) were simultaneouslyimpregnated on Al-MCM41. Surface acidity was notablyincreased after impregnation, probably by the contribution of PO43-groups deposited. After sulfiding (H2S/H2, 673 K), the oxidic impregnatedprecursor having both the best texture and the highest proportionof octahedral Mo6+ (the one supported on Al-MCM41 fromSiO2-Al(SO4)3) was ~30% more active in dibenzothiophenehydrodesulfurization (HDS) than an Al2O3-supported commercialformulation of similar Co-Mo-P loading. For the Al-MCM41-supportedcatalyst, the high HDS activity and predominant selectivity tobiphenyl suggested good Mo promotion by Co.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 1870-249X
https://www.redalyc.org/articulo.oa?id=47548410
identifier_str_mv 1870-249X
url https://www.redalyc.org/articulo.oa?id=47548410
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv http://www.redalyc.org/revista.oa?id=475
dc.rights.none.fl_str_mv Journal of the Mexican Chemical Society
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Journal of the Mexican Chemical Society
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedad Química de México
publisher.none.fl_str_mv Sociedad Química de México
dc.source.none.fl_str_mv Journal of the Mexican Chemical Society (México) Num.4 Vol.48
reponame:Redalyc-UAM
instname:Universidad Autónoma Metropolitana
instacron:UAM
instname_str Universidad Autónoma Metropolitana
instacron_str UAM
institution UAM
reponame_str Redalyc-UAM
collection Redalyc-UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 14.965132

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