OXIDATION OF O-XYLENE OVER MOLYBDENUM OXIDE MONOLAYER CATALYST

Authors
MADHOK KL GOSWAMI HS
Citation
Kl. Madhok et Hs. Goswami, OXIDATION OF O-XYLENE OVER MOLYBDENUM OXIDE MONOLAYER CATALYST, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 33(8), 1994, pp. 785-786
Citations number
11
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry → ACNP
ISSN journal
03764699
Volume
33
Issue
8
Year of publication
1994
Pages
785 - 786
Database
ISI
SICI code
0376-4699(1994)33:8<785:OOOOMO>2.0.ZU;2-U
Abstract
The heterogeneous catalytic vapour phase oxidation of o-xylene to give phthalic anhydride, quinone, maleic anhydride and CO2 over MoO3 and M oO3 applied as monolayers on gamma-Al2O3. CeO2, ZrO2 and TiO2 as catal ysts is discussed. MoO3 has been found to be the most active catalyst giving 75% selectivity of phthalic anhydride in 50% total conversion a t 500-degrees-C, with space velocity 10.4 x 10(3) hr-1 and the surface area 15.8 m2/g. The overall kinetic analysis indicates that the oxida tion of o-xylene to phthalic anhydride is first order with a preexpone ntial factor (A) log 0.61 and an activation energy (E(a)) of 38 kJ mol -1.