Citation
Yap, Taufiq Yun Hin and Abdul Aziz, Abdul Ghani
(2007)
Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts.
Chinese Journal of Catalysis, 28 (12).
pp. 1037-1040.
ISSN 1872-2067
Abstract
The effect of Ni doping (1%, 2%, and 5%) on vanadium phosphate catalysts prepared via VOPO4·2H2O was described and discussed. At low levels, the Ni dopant significantly enhanced the amount of the active lattice oxygen species O− and lowered the reduction peak temperature corresponding to the reduction of V5+ and V4+ phases. A combination of powder X-ray diffraction, temperature-programmed reduction, and chemical analysis data shows that at higher levels, Ni doping induced the formation of the V5+ phase and suppressed the presence of the V4+ phase. Previous studies have indicated that a large amount of oxygen species associated with V5+ inhibit the n-butane conversion but promote the selectivity for maleic anhydride.
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Official URL or Download Paper: http://dx.doi.org/10.1016/S1872-2067(08)60005-4
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science |
| DOI Number: | https://doi.org/10.1016/S1872-2067(08)60005-4 |
| Publisher: | Elsevier |
| Keywords: | Vanadyl pyrophosphate; Nickel; n-butane; Oxidation; Maleic anhydride |
| Depositing User: | Erni Suraya Abdul Aziz |
| Date Deposited: | 22 Sep 2010 09:57 |
| Last Modified: | 25 Nov 2016 01:19 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/S1872-2067(08)60005-4 |
| URI: | http://psasir.upm.edu.my/id/eprint/7855 |
| Statistic Details: | View Download Statistic |
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