Side-chain alkylation of toluene with methanol on Cs-exchanged NaY zeolites: Effect of Cs loading

A. BORGNA, S. MAGNI, J. SEPÚLVEDA, C.L. PADRÓ AND C.R. APESTEGUÍA

CATALYSIS LETTERS

Springer Netherlands

Año: 2005 vol. 102 p. 15 - 21

1011-372X

The side-chain alkylation of toluene with methanol was studied on Cs-exchanged NaY zeolites containing up to 31% Cs (exchange degree, ED, up to 70%). Formation of styrene and ethylbenzene was significant only on Na(Cs)Y zeolites of ED higher than about 40%. Bimolecular side-chain alkylation reaction would require a proper surface geometric configuration of Od)-Cs+d)-Cs+ pairs that is achieved only on Cs-rich zeolites. In contrast, the side reaction forming carbon monoxide from methanol increases monotonically with increasing ED because it is essentially controlled by the basicity of the oxygen lattice.