Stoichiometric process for preparing a zeolite of the L type.

摘要

A zeolite of the L type is prepared by an approximately stoichiometric process wherein the zeolite is crystallized from a reaction mixture aged at from 80 to 260 DEG C containing specified ranges of molar ratios of KOH (and optionally a minor amount of NaOH), water, potassium silicate, and a source of alumina preferably derived from kaolin or halloysite. Most preferably, the source of alumina is metakaolin.