The primary product of title reaction is p-ethyltoluene, which isomerizes to m- and very slowly to o-ethyltoluene. The yields of ethyltoluenes are decreased by hydrodeethylation. Disproportionate accompanies the above transformations. The change of yields and selectivities of p-ethyltoluene with the spacetime, the reaction temperature (350-500*C), catalyst pretreatment temperature (400-700*C), time on flow and with the amount of adsorbed pyridine or 2,6-lutidine are discussed on the basis of kinetical considerations. Inclusions of oxides of phosphorus and/or magnesium suppress the side reactions by decreasing the concentration of the Bronsted acid sites.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry