Patent ID: 9586873
Date: 2017-03-07
CPC Classifications: C07C

Claim:
1. A method for production of para-dialkylbenzenes comprising: contacting, at a temperature of from 245 to 255° C. and a reaction time of from 5 to 20 seconds, a silylated solid ZSM-5 zeolite catalyst in fluidized bed form in a fluidized-bed reactor with a reactant comprising ethylbenzene and methanol to alkylate the ethylbenzene present in the reactant to form a para-dialkylbenzene mixture comprising para-xylene, para-ethyltoluene and para-diethylbenzene, wherein the contacting forms the para-dialkylbenzene mixture with a para selectivity of from 95 to 100% for the para-xylene, a para selectivity of from 90 to 100% for the para-ethyltoluene, and a para selectivity of from 80 to 100% the para-diethylbenzene; and wherein the silylated solid ZSM-5 zeolite catalyst has a SiO