Dw. Werst et al., RADIATION-CHEMICAL STUDIES IN ZEOLITES - RADICAL CATIONS AND ZEOLITE CATALYSIS, Radiation physics and chemistry, 51(3), 1998, pp. 255-262
Citations number
32
Categorie Soggetti
Nuclear Sciences & Tecnology","Chemistry Physical","Physics, Atomic, Molecular & Chemical
The constrained spaces within zeolites offer unique opportunities for
chemical reaction control of very reactive intermediates. Here we revi
ew studies which illustrate the use of EPR detection of paramagnetic s
pecies following radiolysis of guest molecules in zeolites to gain new
insights into reactions of organic radical cations. The radiolysis/EP
R technique is also a valuable method to study catalytic transformatio
ns on acidic zeolites. In essence, radiolysis is used to spin label pr
oducts of catalysis in order that they may be detected and identified
by EPR. Several examples are presented to show that application at low
temperatures makes the radiolysis/EPR method a promising new in situ
spectroscopy for elucidating mechanisms in zeolite catalysis. (C) 1998
Elsevier Science Ltd. All rights reserved.