THE ROLE OF GAS-PHASE RADICAL REACTIONS IN THE FORMATION OF PRODUCTS OF PROPYLENE CATALYTIC-OXIDATION

Authors
APTEKAR EL OREL LI IOFFE MA ILIN SD SINEV MY GERSHENZON YM KRYLOV OV
Citation
El. Aptekar et al., THE ROLE OF GAS-PHASE RADICAL REACTIONS IN THE FORMATION OF PRODUCTS OF PROPYLENE CATALYTIC-OXIDATION, Kinetics and catalysis, 35(4), 1994, pp. 532-536
Citations number
11
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
35
Issue
4
Year of publication
1994
Pages
532 - 536
Database
ISI
SICI code
0023-1584(1994)35:4<532:TROGRR>2.0.ZU;2-F
Abstract
The investigation of the formation of free radicals in the process of propylene total oxidation over supported oxide catalysts demonstrates the decrease of their efficiency in the formation of free radicals in the following order: CoO-MgO > CoO-SiO2 > MgO > MoO(x)-Al2O3 > CoO/Al2 O3. At a low pressure, the consumption of the reactants is not caused by gas reactions of the radicals generated by the catalyst. The predom inant process of the disappearance of the radicals is capture by the s urface, with the formation of chemisorbed species. Their reactions on the surface lead to the final total oxidation products.