SHAPE SELECTIVE REACTIONS UTILIZING GROUP III A METAL- MODIFIED ZEOLITE CATALYST

摘要

ABSTRACTA process for the conversion of aromatic compounds todialkylbenzene compounds rich in the 1,4-dlalkylbenzene isomer. Thereaction is carried out in the presence of a particular type of zeolitecatalyst having a silica to alumina mole ratio of at least 12 and aconstraint index of about 1-12, said catalyst having been modified bytreatment with compounds of scandium, yttrlum and/or samarium, andoptionally phosphorus, to deposit a minor proportion of such elements onthe zeolite.