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THE TRANSFORMATIONS OF 4-tert-BUTYLTOLUENE OVER Ce-MODIFIED MORDENITE ZEOLITES

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Author(s): G. Kostrab, | D. Mravec

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 46;
Issue: 1;
Start page: 28;
Date: 2004;
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Keywords: 4-tert-butyltoluene | tert-butylation | isomerization | dealkylation | mordenite | zeolites | Ce- modification | deactivation

ABSTRACT
The transformation of 4-tert-butyltoluene over Ce-modified H-mordenite with 1 and 4 wt. % of cerium onzeolite prepared by Ce-impregnation of H- mordenite (H-MOR CBV 21A) was studied at 180 °C in the liquidphase. Partial deactivation of external acid sites by Ce-modification has positive effect to suppress dealkylationof tert-butyltoluenes and isomerisation of 4-tert-butyltoluene to thermodynamically more stable 3-tertbutyltoluene.
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