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Title: Oxydehydrogenation of propane over vanadyl ion-containing VAPO-5 and CoAPO-5

Abstract

Vanadyl ion-containing VAPO-5 and CoAPO-5 are prepared by contact with a vanadyl sulfate solution or by impregnation with aqueous vanadyl oxalate and characterized by powder X-ray diffraction, electron spin resonance spectroscopy, and temperature-programmed reduction (TPR). Treatment of VAPO-5 with vanadyl ion results in incorporation of up to 1.0 wt% total vanadium into the AFI framework by filling lattice vacancies. At vanadium contents above ca. 1 wt%, extraframework vanadium is also obtained. TPR results show that framework vanadium can be reduced by hydrogen at a lower temperature than extraframework vanadium and vanadium in bulk V{sub 2}O{sub 5}. Oxydehydrogenation of propane over VAPO-5 samples reveals that framework vanadium is the most active and selective species for propylene formation (at 400 C and 5% conversion, the selectivity is 72%); extraframework vanadium species are less active and selective.

Authors:
; ; ;
Publication Date:
Research Org.:
California Inst. of Tech., Pasadena, CA (US)
OSTI Identifier:
20076098
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 192; Journal Issue: 1; Other Information: PBD: 15 May 2000; Journal ID: ISSN 0021-9517
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 10 SYNTHETIC FUELS; PROPANE; OXIDATION; DEHYDROGENATION; VANADIUM OXIDES; CATALYTIC EFFECTS; PROPYLENE; SYNTHESIS

Citation Formats

Okamoto, M., Luo, L., Labinger, J.A., and Davis, M.E. Oxydehydrogenation of propane over vanadyl ion-containing VAPO-5 and CoAPO-5. United States: N. p., 2000. Web. doi:10.1006/jcat.2000.2840.
Okamoto, M., Luo, L., Labinger, J.A., & Davis, M.E. Oxydehydrogenation of propane over vanadyl ion-containing VAPO-5 and CoAPO-5. United States. doi:10.1006/jcat.2000.2840.
Okamoto, M., Luo, L., Labinger, J.A., and Davis, M.E. Mon . "Oxydehydrogenation of propane over vanadyl ion-containing VAPO-5 and CoAPO-5". United States. doi:10.1006/jcat.2000.2840.
@article{osti_20076098,
title = {Oxydehydrogenation of propane over vanadyl ion-containing VAPO-5 and CoAPO-5},
author = {Okamoto, M. and Luo, L. and Labinger, J.A. and Davis, M.E.},
abstractNote = {Vanadyl ion-containing VAPO-5 and CoAPO-5 are prepared by contact with a vanadyl sulfate solution or by impregnation with aqueous vanadyl oxalate and characterized by powder X-ray diffraction, electron spin resonance spectroscopy, and temperature-programmed reduction (TPR). Treatment of VAPO-5 with vanadyl ion results in incorporation of up to 1.0 wt% total vanadium into the AFI framework by filling lattice vacancies. At vanadium contents above ca. 1 wt%, extraframework vanadium is also obtained. TPR results show that framework vanadium can be reduced by hydrogen at a lower temperature than extraframework vanadium and vanadium in bulk V{sub 2}O{sub 5}. Oxydehydrogenation of propane over VAPO-5 samples reveals that framework vanadium is the most active and selective species for propylene formation (at 400 C and 5% conversion, the selectivity is 72%); extraframework vanadium species are less active and selective.},
doi = {10.1006/jcat.2000.2840},
journal = {Journal of Catalysis},
issn = {0021-9517},
number = 1,
volume = 192,
place = {United States},
year = {2000},
month = {5}
}