Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts

Detalhes bibliográficos
Autor(a) principal: Guo,Fang
Data de Publicação: 2014
Outros Autores: Guo,Shaoqing, Qiu,Zegang, Zhao,Liangfu, Xiang,Hongwei
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000400017
Resumo: The effects of impregnation methods (co-impregnation and sequential impregnation) and drying conditions (air and vacuum) on the structure and catalytic behavior of MCM-41 supported Ni-W catalysts were investigated. The catalysts were characterized by powder X-ray diffraction (XRD) analysis, Fourier-transform infrared spectroscopy (FT-IR), diffuse reflectance UV-Vis absorbance spectroscopy (DRS), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and pyridine adsorbed infrared spectroscopy (Py-IR) techniques. They were tested for hydrodenitrogenation (HDN) of quinoline at temperatures of 300-400 ºC. The HDN results showed that the catalysts prepared by co-impregnation were more active than the catalysts prepared by sequential impregnation and the catalysts prepared by drying under vacuum were more active than the catalysts dried in air. Characterization revealed that the co-impregnation method and drying under vacuum promoted the dispersion of W, the formation of the active phases, and the formation of acidic sites on the catalysts.
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spelling Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalystsNi-W/MCM-41 catalystsimpregnation methodhydrodenitrogenationquinolineThe effects of impregnation methods (co-impregnation and sequential impregnation) and drying conditions (air and vacuum) on the structure and catalytic behavior of MCM-41 supported Ni-W catalysts were investigated. The catalysts were characterized by powder X-ray diffraction (XRD) analysis, Fourier-transform infrared spectroscopy (FT-IR), diffuse reflectance UV-Vis absorbance spectroscopy (DRS), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and pyridine adsorbed infrared spectroscopy (Py-IR) techniques. They were tested for hydrodenitrogenation (HDN) of quinoline at temperatures of 300-400 ºC. The HDN results showed that the catalysts prepared by co-impregnation were more active than the catalysts prepared by sequential impregnation and the catalysts prepared by drying under vacuum were more active than the catalysts dried in air. Characterization revealed that the co-impregnation method and drying under vacuum promoted the dispersion of W, the formation of the active phases, and the formation of acidic sites on the catalysts.Sociedade Brasileira de Química2014-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000400017Journal of the Brazilian Chemical Society v.25 n.4 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140035info:eu-repo/semantics/openAccessGuo,FangGuo,ShaoqingQiu,ZegangZhao,LiangfuXiang,Hongweieng2014-04-22T00:00:00Zoai:scielo:S0103-50532014000400017Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-04-22T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
title Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
spellingShingle Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
Guo,Fang
Ni-W/MCM-41 catalysts
impregnation method
hydrodenitrogenation
quinoline
title_short Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
title_full Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
title_fullStr Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
title_full_unstemmed Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
title_sort Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
author Guo,Fang
author_facet Guo,Fang
Guo,Shaoqing
Qiu,Zegang
Zhao,Liangfu
Xiang,Hongwei
author_role author
author2 Guo,Shaoqing
Qiu,Zegang
Zhao,Liangfu
Xiang,Hongwei
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Guo,Fang
Guo,Shaoqing
Qiu,Zegang
Zhao,Liangfu
Xiang,Hongwei
dc.subject.por.fl_str_mv Ni-W/MCM-41 catalysts
impregnation method
hydrodenitrogenation
quinoline
topic Ni-W/MCM-41 catalysts
impregnation method
hydrodenitrogenation
quinoline
description The effects of impregnation methods (co-impregnation and sequential impregnation) and drying conditions (air and vacuum) on the structure and catalytic behavior of MCM-41 supported Ni-W catalysts were investigated. The catalysts were characterized by powder X-ray diffraction (XRD) analysis, Fourier-transform infrared spectroscopy (FT-IR), diffuse reflectance UV-Vis absorbance spectroscopy (DRS), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and pyridine adsorbed infrared spectroscopy (Py-IR) techniques. They were tested for hydrodenitrogenation (HDN) of quinoline at temperatures of 300-400 ºC. The HDN results showed that the catalysts prepared by co-impregnation were more active than the catalysts prepared by sequential impregnation and the catalysts prepared by drying under vacuum were more active than the catalysts dried in air. Characterization revealed that the co-impregnation method and drying under vacuum promoted the dispersion of W, the formation of the active phases, and the formation of acidic sites on the catalysts.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000400017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000400017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140035
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.25 n.4 2014
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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