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1998•Indian Journal of Chemical TechnologyOpen access

Alkylation of toluene with n- propanol over modified zeolites

P. Ram Reddy, S. J. Kulkarni, M. Subrahmanyam

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Abstract

The reaction of alkylation of toluene with n-propanol has been carried out over HY, LaY, CeY, CrY, LaKY, HZSM-5 and LaZSM-5 zeolites. The yields of cymenes obtained are 35-68 wt% with high selectivity. The modified zeolites promoted by two different cations like LaKY are better catalysts for this reaction. The presence of promoter like La 3+ in Y zeolite increases the alkylation activity, decreases the dealkylation of toluene to benzene and coking. The presence of K + or Na + decreases the coking and dealkylation.

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What this paper is about

The reaction of alkylation of toluene with n-propanol has been carried out over HY, LaY, CeY, CrY, LaKY, HZSM-5 and LaZSM-5 zeolites. The yields of cymenes obtained are 35-68 wt% with high selectivity. The modified zeolites promoted by two different cations like LaKY are better catalysts for this reaction. The presence of promoter like La 3+ in Y zeolite increases the alkylation activity, decreases the dealkylation of toluene to benzene and coking. The presence of K + or Na + decreases the coking and dealkylation.

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Available abstract

The reaction of alkylation of toluene with n-propanol has been carried out over HY, LaY, CeY, CrY, LaKY, HZSM-5 and LaZSM-5 zeolites. The yields of cymenes obtained are 35-68 wt% with high selectivity. The modified zeolites promoted by two different cations like LaKY are better catalysts for this reaction. The presence of promoter like La 3+ in Y zeolite increases the alkylation activity, decreases the dealkylation of toluene to benzene and coking. The presence of K + or Na + decreases the coking and dealkylation.

Key concepts: Chemistry, Alkylation, Toluene, Benzene, Zeolite, Catalysis, Selectivity, Propanol

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