Year: 1991
Type: article
Abstract: Product selectivities both at early stage and thermodynamic equilibrium for the titled reaction were studied over silica-alumina and H-mordenite catalysts.For isopropylation with propylene over silica-alumina catalyst, 2-, 2'-, and 4-positions were more readily alkylated than 3-position at early stage of the reaction.After attaining thermodynamic equilibrium, the fraction of 3-isopropyl-p-terphenyl in the isomer mixture increased to 58%.On the other hand, the fraction of 4-isopropyl-p-terphenyl was 78% over the H-mordenite catalyst, due to the shape selectivity of H-mordenite, whereas it was 35-50% over the silica-alumina catalyst.The fraction of 4,4"-diisopropyl-p-terphenyl in the diisopropyl isomers was also as high as 75% over the H-mordenite catalyst, compared with 10-20% over the silica-alumina catalyst.
Source: 石油学会誌
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2320162010