Effects of impregnation methods and drying conditions on quinoline hydrodenitrogenation over Ni-W based catalysts
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
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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Journal of the Brazilian Chemical Society (Online) |
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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 |
_version_ |
1750318175796330496 |