ZEOLITE CATALYSIS STUDIED BY RADIOLYSIS EPR - TRANSFORMATIONS OF CYCLIC OLEFINS/

The Bronsted acid-catalyzed transformations of cyclic olefins in zeoli tes HZSM5 and H-mordenite were elucidated by the radiolysis/EPR method . Products of catalytic reactions were spin-labeled by radiolytic mean s and identified by using EPR spectroscopy. Comparison of reactions on HZSM5 and H-mordenite reveals strong shape selectivity on reactions i n these catalysts. The radiolysis/EPR method is a new in situ spectros copy with excellent sensitivity and structural specificity for the stu dy of reaction mechanisms in zeolite catalysts.