Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation

Miguel A. Bañares; Sheima J. Khatib

doi:10.1016/j.cattod.2004.06.152

Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation

Miguel A. Bañares, Sheima J. Khatib

Chemical Engineering

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

79 Scopus citations

Abstract

The interactions between Mo and V on alumina are studied for the oxidative dehydrogenation (ODH) of propane. Dispersed surface molybdena and vanadia species share alumina support but show no interaction below Mo + V monolayer coverage. Vanadia and molybdena species react on alumina into mixed Mo-V-(Al)-O above Mo + V monolayer coverage, which nature depends on environmental conditions. Molybdena sites may form Al₂(MoO₄)₃ or Mo-V-O phases depending on loading and temperature. The Mo-V-O phases spread on the support as separate surface oxides at lower coverage, such trend appears promoted by ODH reaction conditions.

Original language	English
Pages (from-to)	251-257
Number of pages	7
Journal	Catalysis Today
Volume	96
Issue number	4
DOIs	https://doi.org/10.1016/j.cattod.2004.06.152
State	Published - Oct 13 2004

Keywords

Mixed oxides
Molybdena
ODH
Operando
Propane
Raman
Structure-activity relationships
Vanadia

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10.1016/j.cattod.2004.06.152

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title = "Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation",

abstract = "The interactions between Mo and V on alumina are studied for the oxidative dehydrogenation (ODH) of propane. Dispersed surface molybdena and vanadia species share alumina support but show no interaction below Mo + V monolayer coverage. Vanadia and molybdena species react on alumina into mixed Mo-V-(Al)-O above Mo + V monolayer coverage, which nature depends on environmental conditions. Molybdena sites may form Al2(MoO4)3 or Mo-V-O phases depending on loading and temperature. The Mo-V-O phases spread on the support as separate surface oxides at lower coverage, such trend appears promoted by ODH reaction conditions.",

keywords = "Mixed oxides, Molybdena, ODH, Operando, Propane, Raman, Structure-activity relationships, Vanadia",

author = "Ba{\~n}ares, {Miguel A.} and Khatib, {Sheima J.}",

note = "Funding Information: This research was funded by MCyT (Spain) project MAT-2002-0400-C02-01. Grant IN96-0053 partially funded the acquisition of the Raman system. SJK thanks CSIC-EU for an “I3P” doctorate studies fellowship. The authors thank the support of Mr. Ram{\'o}n Tom{\'e} Neches and Mr. Francisco Izquierdo Galve for the fabrication of the operando cell at the Institute of Catalysis and Petrochemistry, CSIC, in Madrid.",

year = "2004",

month = oct,

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doi = "10.1016/j.cattod.2004.06.152",

language = "English",

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T1 - Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation

AU - Bañares, Miguel A.

AU - Khatib, Sheima J.

N1 - Funding Information: This research was funded by MCyT (Spain) project MAT-2002-0400-C02-01. Grant IN96-0053 partially funded the acquisition of the Raman system. SJK thanks CSIC-EU for an “I3P” doctorate studies fellowship. The authors thank the support of Mr. Ramón Tomé Neches and Mr. Francisco Izquierdo Galve for the fabrication of the operando cell at the Institute of Catalysis and Petrochemistry, CSIC, in Madrid.

PY - 2004/10/13

Y1 - 2004/10/13

N2 - The interactions between Mo and V on alumina are studied for the oxidative dehydrogenation (ODH) of propane. Dispersed surface molybdena and vanadia species share alumina support but show no interaction below Mo + V monolayer coverage. Vanadia and molybdena species react on alumina into mixed Mo-V-(Al)-O above Mo + V monolayer coverage, which nature depends on environmental conditions. Molybdena sites may form Al2(MoO4)3 or Mo-V-O phases depending on loading and temperature. The Mo-V-O phases spread on the support as separate surface oxides at lower coverage, such trend appears promoted by ODH reaction conditions.

AB - The interactions between Mo and V on alumina are studied for the oxidative dehydrogenation (ODH) of propane. Dispersed surface molybdena and vanadia species share alumina support but show no interaction below Mo + V monolayer coverage. Vanadia and molybdena species react on alumina into mixed Mo-V-(Al)-O above Mo + V monolayer coverage, which nature depends on environmental conditions. Molybdena sites may form Al2(MoO4)3 or Mo-V-O phases depending on loading and temperature. The Mo-V-O phases spread on the support as separate surface oxides at lower coverage, such trend appears promoted by ODH reaction conditions.

KW - Mixed oxides

KW - Molybdena

KW - ODH

KW - Operando

KW - Propane

KW - Raman

KW - Structure-activity relationships

KW - Vanadia

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DO - 10.1016/j.cattod.2004.06.152

M3 - Article

AN - SCOPUS:4644371702

SN - 0920-5861

VL - 96

SP - 251

EP - 257

JO - Catalysis Today

JF - Catalysis Today

IS - 4

ER -

Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation

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Keywords

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