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The void structure of zeolite ITQ-7 (ISV structure) is discussed on the basis of catalytic reaction tests. The isomerization and disproportionation of meta-xylene, and the alkylation of benzene or toluene with either ethanol or isopropanol, on the acidic zeolite have been used as model reactions. The dimensions of its three-dimensional system of channels, with pores between 6.1 and 6.3 Å and with...
Benzene alkylation with ethene and propene has been carried out under liquid-phase reaction conditions over zeolites MCM-22, Beta, and ZSM-5. MCM-22 seems to be a good catalyst for benzene alkylation especially with propene, showing high activity and stability and good selectivity. Kinetic experiments show that alkylation with propene follows an Eley–Rideal type mechanism.
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