KINETIC COUPLING IN AND BETWEEN CATALYTIC CYCLES

Citation
M. Boudart et G. Djegamariadassou, KINETIC COUPLING IN AND BETWEEN CATALYTIC CYCLES, Catalysis letters, 29(1-2), 1994, pp. 7-13
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
1011-372X
Volume
29
Issue
1-2
Year of publication
1994
Pages
7 - 13
Database
ISI
SICI code
1011-372X(1994)29:1-2<7:KCIABC>2.0.ZU;2-5
Abstract
Quasi-equilibrium between catalytic reactive intermediates and reactan t or product molecules is a common assumption. As process conditions v ary, this assumption may cease to be valid because of kinetic coupling between steps in the catalytic cycle. In the case of coupled catalyti c cycles, kinetic coupling manifests itself by substantial changes in selectivity. An elegant example of catalytic coupling in and between c atalytic cycles is the change in enantioselection with H2 pressure for the asymmetric hydrogenation of a prochiral alkene, as discovered in the Halpern laboratory.