Aging and activation of alpha-NiMoO4 catalyst for selective propane oxydehydrogenation into propene

Authors
Del Rosso, R Kaddouri, A Fumagalli, D Mazzocchia, C Gronchi, P Centola, P
Citation
R. Del Rosso et al., Aging and activation of alpha-NiMoO4 catalyst for selective propane oxydehydrogenation into propene, REACT KIN C, 68(2), 1999, pp. 175-181
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
REACTION KINETICS AND CATALYSIS LETTERS
ISSN journal
01331736 → ACNP
Volume
68
Issue
2
Year of publication
1999
Pages
175 - 181
Database
ISI
SICI code
0133-1736(199911)68:2<175:AAAOAC>2.0.ZU;2-U
Abstract
Increase in catalytic activity performance of a stoichiometric NiMoO4 syste m has been studied using a periodic flow reactor system. Aging results in a n increase of selectivity, a decrease in BET surface area, a weak decrease in activity and a change in surface morphological properties. alpha-Nickel molybdate exposed to the reaction gases and temperature tends to transform progressively toward an alpha-aged phase more and more like to the most sel ective beta-phase.