Efecto del pretratamiento sobre la actividad de catalizadores carburados de NiMo Y CoMo soportados sobre γ-Al2O3 para la reacción de hidrodesulfuración del tiofeno

Luis A. Lozano; Yraida Díaz; Joaquín L. Brito

Efecto del pretratamiento sobre la actividad de catalizadores carburados de NiMo Y CoMo soportados sobre γ-Al₂O₃ para la reacción de hidrodesulfuración del tiofeno

Translated title of the contribution: Pretreatment effect on NiMo and CoMo carbide catalysts activity for the reaction of thiophene hydrodesulfuration

Luis A. Lozano
, Yraida Díaz
, Joaquín L. Brito

Instituto Venezolano de Investigaciones Científicas

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

It was studied the effect of pretreatment of γ-Al₂O ₃ supported NiMo and CoMo catalysts on thiophene HDS reaction at atmospheric pressure. Two activation procedures were compared: flow of either CS₂/H₂ or H₂, both of them at 300 °C for two hours. Both commercial and laboratory synthesized NiMo and CoMo oxidic and carbided catalysts were tested in the tiophene HDS reaction at 400 °C. All the samples were characterized by means of X-ray diffraction, Fourier-transform infrared spectroscopy, physorption of N₂ (BET method) and elemental analysis. Characterization suggest that there are mixed phases in the solids; on the other hand catalysts activity tests indicates that, for carbides the pretreatments studied do not have any major influence over tiophene conversion, although it is observed a slight improvement in the activity when the carbide catalyst are activated by CS2/H2 gas flow.

Translated title of the contribution	Pretreatment effect on NiMo and CoMo carbide catalysts activity for the reaction of thiophene hydrodesulfuration
Original language	Spanish
Pages (from-to)	70-77
Number of pages	8
Journal	Revista de la Facultad de Ingenieria
Volume	27
Issue number	1
State	Published - Mar 2012
Externally published	Yes

Cite this

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title = "Efecto del pretratamiento sobre la actividad de catalizadores carburados de NiMo Y CoMo soportados sobre γ-Al2O3 para la reacci{\'o}n de hidrodesulfuraci{\'o}n del tiofeno",

abstract = "It was studied the effect of pretreatment of γ-Al2O 3 supported NiMo and CoMo catalysts on thiophene HDS reaction at atmospheric pressure. Two activation procedures were compared: flow of either CS2/H2 or H2, both of them at 300 °C for two hours. Both commercial and laboratory synthesized NiMo and CoMo oxidic and carbided catalysts were tested in the tiophene HDS reaction at 400 °C. All the samples were characterized by means of X-ray diffraction, Fourier-transform infrared spectroscopy, physorption of N2 (BET method) and elemental analysis. Characterization suggest that there are mixed phases in the solids; on the other hand catalysts activity tests indicates that, for carbides the pretreatments studied do not have any major influence over tiophene conversion, although it is observed a slight improvement in the activity when the carbide catalyst are activated by CS2/H2 gas flow.",

keywords = "Carbides, Catalysts, HDS activity, Hydrodesulfuration",

author = "Lozano, \{Luis A.\} and Yraida D{\'i}az and Brito, \{Joaqu{\'i}n L.\}",

year = "2012",

month = mar,

language = "Espa{\~n}ol",

volume = "27",

pages = "70--77",

journal = "Revista de la Facultad de Ingenieria",

issn = "0798-4065",

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T1 - Efecto del pretratamiento sobre la actividad de catalizadores carburados de NiMo Y CoMo soportados sobre γ-Al2O3 para la reacción de hidrodesulfuración del tiofeno

AU - Lozano, Luis A.

AU - Díaz, Yraida

AU - Brito, Joaquín L.

PY - 2012/3

Y1 - 2012/3

N2 - It was studied the effect of pretreatment of γ-Al2O 3 supported NiMo and CoMo catalysts on thiophene HDS reaction at atmospheric pressure. Two activation procedures were compared: flow of either CS2/H2 or H2, both of them at 300 °C for two hours. Both commercial and laboratory synthesized NiMo and CoMo oxidic and carbided catalysts were tested in the tiophene HDS reaction at 400 °C. All the samples were characterized by means of X-ray diffraction, Fourier-transform infrared spectroscopy, physorption of N2 (BET method) and elemental analysis. Characterization suggest that there are mixed phases in the solids; on the other hand catalysts activity tests indicates that, for carbides the pretreatments studied do not have any major influence over tiophene conversion, although it is observed a slight improvement in the activity when the carbide catalyst are activated by CS2/H2 gas flow.

AB - It was studied the effect of pretreatment of γ-Al2O 3 supported NiMo and CoMo catalysts on thiophene HDS reaction at atmospheric pressure. Two activation procedures were compared: flow of either CS2/H2 or H2, both of them at 300 °C for two hours. Both commercial and laboratory synthesized NiMo and CoMo oxidic and carbided catalysts were tested in the tiophene HDS reaction at 400 °C. All the samples were characterized by means of X-ray diffraction, Fourier-transform infrared spectroscopy, physorption of N2 (BET method) and elemental analysis. Characterization suggest that there are mixed phases in the solids; on the other hand catalysts activity tests indicates that, for carbides the pretreatments studied do not have any major influence over tiophene conversion, although it is observed a slight improvement in the activity when the carbide catalyst are activated by CS2/H2 gas flow.

KW - Carbides

KW - Catalysts

KW - HDS activity

KW - Hydrodesulfuration

UR - https://www.scopus.com/pages/publications/84880234471

M3 - Artículo

AN - SCOPUS:84880234471

SN - 0798-4065

VL - 27

SP - 70

EP - 77

JO - Revista de la Facultad de Ingenieria

JF - Revista de la Facultad de Ingenieria

IS - 1

ER -

Efecto del pretratamiento sobre la actividad de catalizadores carburados de NiMo Y CoMo soportados sobre γ-Al₂O₃ para la reacción de hidrodesulfuración del tiofeno

Abstract

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