Alkylation of Benzene with Technical Fraction Propylene - Propane Over Modified B-(Al)-HZSM-5 Catalysts

Abstract

Benzene alkylation with propylene - propane technical mixture over B-(Al)-HZSM-5 zeolite, as solid acid catalyst has been studied. It was found that izopropylbenzene (IPB) formation associate with a low level of byproducts, e.g., n-propylbenzene (NPB) and di-izopropylbenzenes (DIPB) as result of the inherent multiple competing reactions. Under the specific conditions in the alkylation of benzene with propylene -propane mixture, the maxim yields of IPB (% wt.) and the IPB selectivity based on benzene reaction (wt.%) were 86, 87 and 87.0 %.