Authors:
Yuefeng Liu Department of Chemical Engineering, Sichuan University, Chengdu, 610065 China

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Chengfa Jiang Department of Chemical Engineering, Sichuan University, Chengdu, 610065 China

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Wei Chu Department of Chemical Engineering, Sichuan University, Chengdu, 610065 China

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Wenjing Sun Department of Chemical Engineering, Sichuan University, Chengdu, 610065 China

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Zaiku Xie Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai, 201209 China

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Abstract

The V2O5/SiO2 catalysts promoted by fluoride anion and prepared with different F adding sequences were investigated. The samples were characterized by X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption, scanning electron microscopy (SEM), X-ray powder diffraction (XRD), temperature-programmed reduction (TPR), oxygen temperature-programmed desorption (O2-TPD) techniques and oxidative dehydrogenation reaction measurements. The results indicated that the fluoride impregnation sequence had a significant effect on the structure and selectivity of propene. Co-impregnation prepared VOF–C catalyst showed a better performance in the ODP reaction. The C3H6 selectivity was 74.9% at 480 °C, compared to 60.9% of V–Si–O sample without promotion. The propane conversion and propene yield were also better. The fluoride addition enhanced the mobility of oxygen in the catalyst.

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)