Investigations on the promoting effect of metal oxides on La-V-O catalyst in propane oxidative dehydrogenation

Citation
B. Zhaorigetu et al., Investigations on the promoting effect of metal oxides on La-V-O catalyst in propane oxidative dehydrogenation, CATAL LETT, 73(2-4), 2001, pp. 133-136
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011372X → ACNP
Volume
73
Issue
2-4
Year of publication
2001
Pages
133 - 136
Database
ISI
SICI code
1011-372X(2001)73:2-4<133:IOTPEO>2.0.ZU;2-D
Abstract
The addition of reducible metal oxides as promoters shows a positive effect on the catalytic behavior of lanthanum vanadate (LaVO4). A C3H6 yield incr ease of 6.5% is observed at 500 degreesC on molybdenum-promoted LaVO4, whic h can be attributed to the change of the redox properties, the blocking of the strong oxidation sites of the catalysts and to an increase of the acces sibility of the labile oxygen toward the reactant. The influence of the cat alyst preparation method and of the Mo loading as well as the additional pr omoting effect of CO2 in the gas feed was also examined.