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Localization of gallium in erionite type Ga−Al zeolites by71Ga,27Al and29Si NMR

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Abstract

The state of Al3+, Ga3+ and Si4+ in erionites obtained by hydrothermal crystallization from Ga−Al−Si gels has been examined. The results suggest that gallium cations can isomorphously substitute a part of silicon cations in the zeolite framework, to a notable extent in the sites having no aluminium cations in the second coordination sphere of silicon.

Abstract

Исследовано состояние катионов Al3+, Ga3+ и Si4+ в зрионитах, полученных гидротермальной кристаллизацией из галлийалюмосиликатных гелей. Показано, что катионы галлия способны изоморфно замещать часть катионов кремния цеолитного каркаса преимущественно в местах, не имеющих катионов алюминия во второй координационной сфере.

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Mastikhin, V.M., Klyueva, N.V., Ione, K.G. et al. Localization of gallium in erionite type Ga−Al zeolites by71Ga,27Al and29Si NMR. React Kinet Catal Lett 33, 465–470 (1987). https://doi.org/10.1007/BF02128107

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  • DOI: https://doi.org/10.1007/BF02128107

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