METHOD FOR PRODUCING ALUMINOSILICATES AND THEIR USE AS CATALYSTS AND SUPPORTS

摘要

The invention relates to a method for preparing a crystalline aluminosilicate having a high silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as that of ZSM-5 zeolite which method comprises mixing a source of silica, a source of alumina, a source of alkali metal, water and at least one alkanolamine according to Formula (I): (I) wherein any two of R1, R2 and R3 are independently alkylol groups and the remaining one of R1, R2 and R3 is a hydrogen atom or all of R1, R2 and R3 are independently alkylol group, the alkylol groups being -CH2-R-OH, wherein R is -CH2-, -CH2CH2-, or -CH(CH3)-, the ratio of said source of silica to said source of alumina being at least 20:1 based on the equivalent moles of silica and alumina in said respective sources, maintaining said mixture at a temperature above about 120 DEG C. and recovering the crystalline aluminosilicate formed.