Investigations of the mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts

Lixiong Zhang; Dazhuang Liu; Biguang Yang; Jianhong Zhao

doi:10.1016/0926-860X(94)85096-8

Investigations of the mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts

Lixiong Zhang, Dazhuang Liu, Biguang Yang, Jianhong Zhao

Zhengzhou Institute of Technology

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

17 Scopus citations

Abstract

The mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts with SiO₂ and Al₂O₃ as supports, respectively, were studied as the basis of research into the reasons for the loss of molybdenum from single MoO₃ catalysts. It was found that the loss of molybdenum was due to the sublimation of MoO₂(OH)₂, formed by the reaction of active species with water vapor. The kinetics leading to the loss of molybdenum in the presence of water vapor are expressed as r=kVC^3.5_s. The difference in the rate of molybdenum loss from single MoO₃ catalysts and bismuth molybdate catalysts are discussed.

Original language	English
Pages (from-to)	163-171
Number of pages	9
Journal	Applied Catalysis A: General
Volume	117
Issue number	2
DOIs	https://doi.org/10.1016/0926-860X(94)85096-8
State	Published - 29 Sep 1994
Externally published	Yes

Keywords

Bismuth molybdate
Deactivation
Kinetics
Loss
Mechanism

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10.1016/0926-860X(94)85096-8

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abstract = "The mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts with SiO2 and Al2O3 as supports, respectively, were studied as the basis of research into the reasons for the loss of molybdenum from single MoO3 catalysts. It was found that the loss of molybdenum was due to the sublimation of MoO2(OH)2, formed by the reaction of active species with water vapor. The kinetics leading to the loss of molybdenum in the presence of water vapor are expressed as r=kVC3.5s. The difference in the rate of molybdenum loss from single MoO3 catalysts and bismuth molybdate catalysts are discussed.",

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author = "Lixiong Zhang and Dazhuang Liu and Biguang Yang and Jianhong Zhao",

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AU - Zhang, Lixiong

AU - Liu, Dazhuang

AU - Yang, Biguang

AU - Zhao, Jianhong

PY - 1994/9/29

Y1 - 1994/9/29

N2 - The mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts with SiO2 and Al2O3 as supports, respectively, were studied as the basis of research into the reasons for the loss of molybdenum from single MoO3 catalysts. It was found that the loss of molybdenum was due to the sublimation of MoO2(OH)2, formed by the reaction of active species with water vapor. The kinetics leading to the loss of molybdenum in the presence of water vapor are expressed as r=kVC3.5s. The difference in the rate of molybdenum loss from single MoO3 catalysts and bismuth molybdate catalysts are discussed.

AB - The mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts with SiO2 and Al2O3 as supports, respectively, were studied as the basis of research into the reasons for the loss of molybdenum from single MoO3 catalysts. It was found that the loss of molybdenum was due to the sublimation of MoO2(OH)2, formed by the reaction of active species with water vapor. The kinetics leading to the loss of molybdenum in the presence of water vapor are expressed as r=kVC3.5s. The difference in the rate of molybdenum loss from single MoO3 catalysts and bismuth molybdate catalysts are discussed.

KW - Bismuth molybdate

KW - Deactivation

KW - Kinetics

KW - Loss

KW - Mechanism

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Investigations of the mechanisms and kinetics leading to a loss of molybdenum from bismuth molybdate catalysts

Abstract

Keywords

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