par Kozak, John;Nicolis, Catherine;Nicolis, Grégoire 
;Turro, N.J.
Référence Journal of Physical Chemistry (1952), 105, 49, page (10949-10951)
Publication Publié, 2001
;Turro, N.J.Référence Journal of Physical Chemistry (1952), 105, 49, page (10949-10951)
Publication Publié, 2001
Article révisé par les pairs
| Résumé : | A Markovian theory is developed to study the efficiency of diffusion-reaction processes involving geminate radical pairs moving on the surface of a catalyst (e.g., zeolite) support. Results obtained for the simplest (lattice) system are corroborated by Monte Carlo calculations, and these are extended to study the effect of system size. A kinetic model is developed to account for the results obtained and leads to the general conclusion that the photochemical generation of a triplet pair, followed by the subsequent diffusion and eventual recombination of the radicals R↑ and R↓, lengthens the mean reaction time by a factor of ∼2, relative to the case in which R↑ and R↓ are assumed to be present at the very outset. |
