Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 569 - 574 (1981)
Update date:2022-08-29
Topics:
Otsuka, Kiyoshi
Manda, Junichi
Morikawa, Akira
The presence of very active sodium ions in NaY zeolite for the SO2-induced cis-trans isomerization of cis-but-2-ene has been suggested.The sodium ions were removed by exchange with multivalent cations at a low level of exchange.It was inferred that a sodium ion in the six-membered rigns (site II or II*) containing one (or zero) aluminium ion or a delocalized sodium ion somewhere in the supercages is responsible for the active site.The presence of active univalent cations has been also confirmed in K-L and Na-mordenite.
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