Synthesis of zeolite ZSM-22 with a heterocyclic organic compound

Abstract

Abstract An improved process for preparing ZSM-22 zeolite is disclosed and claimed. The process comprises preparing a reaction mixture comprised of sources of an alkali or alkaline earth metal, alumina, silica, organic promoter and water, and having the following composition, in terms of mole ratios of oxides: SiO2/Al2O3=20 to INFINITY H2O/SiO2=10 to 100 OH-/SiO2=0 to 1.0 M+/SiO2=0 to 2.0 RN/SiO2=0.01 to 2.0 wherein RN is a functional group of a heterocyclic organic compound containing one or more four (4) to ten (10) member, saturated or unsaturated, non-fused rings, wherein the hetero atoms are the same or different, and they are oxygen, phosphorus or nitrogen, an alkyl and/or alkene derivative of the heterocyclic organic compound, wherein the alkyl and/or alkene groups contain one (1) to ten (10) carbon atoms, or an organic or inorganic salt of the heterocyclic organic compound or its alkyl or alkene derivative, and M is an alkali or alkaline earth metal, e.g., Na, K, Cs, Li, Ca or Sr, and maintaining the reaction mixture at crystallization conditions until crystals of the ZSM-22 zeolite are formed.

Inventors

• 👤 Ernest W. Valyocsik

Bibliographic Details