Localization of gallium in erionite type Ga?Al zeolites by71Ga,27Al and29Si NMR |
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| Authors: | V M Mastikhin N V Klyueva K G Ione and K I Zamaraev |
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| Institution: | (1) Institute of Catalysis, 630090 Novosibirsk, USSR |
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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.
             Al3+, Ga3+ Si4+    ,           .  ,    , .
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