Process for producing ethylbenzene

摘要

PCT No. PCT/JP97/02476 Sec. 371 Date Jan. 14, 1999 Sec. 102(e) Date Jan. 14, 1999 PCT Filed Jul. 17, 1997 PCT Pub. No. WO98/03455 PCT Pub. Date Jan. 29, 1998A process for producing ethylated benzene by a reaction of benzene with ethylene in the presence of a catalyst containing a zeolite beta by using a fixed-bed ascending-flow type reactor, which comprises a) carrying out the reaction under conditions under which ethylene bubbles are present at the inlet of a catalyst layer when ethylene is fed upward from under the catalyst layer, b) recovering reaction products as a liquid from the upper part of the reactor and at the same time taking out a distillate composed mainly of unreacted benzene therefrom as vapor, and c) adjusting the temperature of the catalyst layer at its inlet to a temperature at least 50 DEG C. lower than the maximum attained temperature of the catalyst layer.