Untersuchungen an oxidischen Katalysatoren. XLV. Umwandlung von Aromaten an dealuminierten ZSM-5-Zeolithen |
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| Authors: | F Vogt K-P Wendlandt Ja I Isakov T A Isakova Ch M Mina
ev |
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| Institution: | F. Vogt,K.-P. Wendlandt,Ja. I. Isakov,T. A. Isakova,Ch. M. Mina?ev |
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| Abstract: | Studies on Oxide Catalysts. XLV. Conversion of Aromatics on Dealuminated Zeolites ZSM-5 The catalytic properties of zeolites ZSM-5 dealuminated by hydrochloric acid are investigated in the isomerization of m-Xylene, the disproportionation of toluene and in the alkylation of toluene with methanol. Besides the increase of the Si/Al ratio, the dealumination leads to an inversion of the Si/Al concentration gradient in crystallites, to a shift of acidity spectrum and consequently to a change in catalytic activity and selectivity. |
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