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6


Teoret. i eksperim. khimiya. 2006. Vol.42 No. 1. p. 33-38

Effect of Ion-Exchange and Impregnation Modification of X Zeolite
on the Catalytic Properties in Alkylation of Toluene with Methanol

 

L. Yu. Dolgykh, I. L. Stolyarchuk, P. E. Strizhak, O. V. Shvets, V. G. Ilyin


L. V. Pysarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine
Prosp. Nauky 31, 03028 Kyiv, Ukraine. E-mail: ldolgykh@inphyschem-nas.kiev.ua


The dependence of activity and selectivity of ion-exchanged X-type zeolite with incorporated caesium carbonate in side-chain alkylation of toluene with methanol on exchanged cation nature (Na+, Cs+, Mg2+, Zn2+) was established. It was shown that Mg2+- and Zn2+-exchanged NaX zeolites modified with Cs2CO3 are more favorable for ethylbenzene and styrene yield than alkali-exchanged ones.


Key word toluene, methanol, styrene, ethylbenzene, X-type zeolite, ion exchange, impregnation, caesium, magnesium,
zinc, caesium carbonate.