Title: X-ray and MAS NMR characterization of the thermal transformation of Li(Na)/1bY zeolite to lithium aluminosilicates
Abstract: The high temperature thermal transformation of Li-exchanged Na/1bY zeolite has been investigated by X-ray diffraction and 29Si MAS NMR studies. At 700°C, the zeolite was transformed into an amorphous phase and upon further heating to 800°C, formation of lithium aluminosilicate with high-quartz structure, in addition to an amorphous phase, was noted. When heated above 900°C, the high-quartz structure was transformed into a β-spodumene related solid solution. X-ray and MAS NMR studies indicate the β-spodumene solid solution formed has the composition close to (Lio.23Na0.06) Al0.29Si0.71O2, which is in agreement with chemical analysis.
Publication Year: 1986
Publication Date: 1986-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 39
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