Abstract
Publisher Summary This chapter presents a study of solid-state magic angle spinning nuclear magnetic resonance (MAS NMR) of zeolites and alumina reacted with chlorofluorocarbons. Multinuclear magnetic resonance of both the adsorbed and the solid phase allows to follow the reaction of various chlorofluorocarbons (CCl2F2 and CHClF2) on NaY, HZSM-5 zeolites, and γ-alumina (Al2O3). The intermediates and the final products are identified by 13C and 19F nuclear magnetic resonance (NMR) spectroscopy. At the same time, the kinetics of the reactions can be determined at various temperatures. Over alumina, dismutation reactions take place as primary steps caused by the Lewis acid sites. 29Si, 27Al, and 23Na NMR measurements are quite useful to identify the solid reaction products.
Published Version
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