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129Xe-NMR studies of contact-induced solid-state ion exchange in zeolites

✍ Scribed by Q.J. Chen; J. Fraissard

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 309 KB
Volume: 169
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85654-u

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✦ Synopsis

Ion exchange in a mixture of RbNaX and NaY zeolites after different treatments was studied by lz9Xe-NMR of adsorbed xenon.

The presence of water greatly favours the ion-exchange process. But this latter can also occur under water-free conditions upon heating. The exchange rate (on the NMR time scale) of adsorbed xenon between different zeolite crystallites depends on the experiment temperature.

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