Delwedd Flaen

Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts

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 reducti...

Disgrifiad llawn

Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
Prif Awduron: Yap, Taufiq Yun Hin, Abdul Aziz, Abdul Ghani
Fformat: Erthygl
Iaith:English
Cyhoeddwyd: Elsevier 2007
Mynediad Ar-lein:http://psasir.upm.edu.my/id/eprint/7855/1/Synthesis%20and%20Characterization%20of%20Ni.pdf
Tagiau: Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
id oai:psasir.upm.edu.my:7855
record_format eprints
spelling oai:psasir.upm.edu.my:7855 http://psasir.upm.edu.my/id/eprint/7855/ Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts Yap, Taufiq Yun Hin Abdul Aziz, Abdul Ghani 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. Elsevier 2007-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/7855/1/Synthesis%20and%20Characterization%20of%20Ni.pdf 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 http://dx.doi.org/10.1016/S1872-2067(08)60005-4 10.1016/S1872-2067(08)60005-4
institution UPM IR
collection UPM IR
language English
description 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.
format Article
author Yap, Taufiq Yun Hin
Abdul Aziz, Abdul Ghani
spellingShingle Yap, Taufiq Yun Hin
Abdul Aziz, Abdul Ghani
Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
author_facet Yap, Taufiq Yun Hin
Abdul Aziz, Abdul Ghani
author_sort Yap, Taufiq Yun Hin
title Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
title_short Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
title_full Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
title_fullStr Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
title_full_unstemmed Synthesis and characterization of Ni-doped vanadium phosphorus oxide catalysts
title_sort synthesis and characterization of ni-doped vanadium phosphorus oxide catalysts
publisher Elsevier
publishDate 2007
url http://psasir.upm.edu.my/id/eprint/7855/1/Synthesis%20and%20Characterization%20of%20Ni.pdf
_version_ 1819293214852513792
score 13.4562235

Eitemau Tebyg