Method for preparing beta-zeolite molecular sieve containing excess chiral polymorph A

• Main Authors: TONG MINGQUAN, YU JIHONG, XU RUREN, YAN WENFU
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2012
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention belongs to the technical field of beta-zeolite molecular sieve preparation, particularly relates to a preparation method in which an organic template agent is used to synthesize a beta-zeolite molecular sieve doped with pure silicon or aluminum, gallium, titanium, tin, zirconium and other metals, wherein the beta-zeolite molecular sieve has more chiral polymorph A than common beta-zeolite. The template agent is tetraethyl ammonium hydroxide, N,N,2,6-tetramethyl piperidinyl hydrochloride, dimethyl diisopropyl ammonium hydroxide and other template agents capable of synthesizing the common beta-zeolite under a routine condition; a fluorine source can be a HF solution or a NH4F solution; a used silicon source can be ethyl orthosilicate, silicon sol, white carbon black and the like; an aluminum source can be aluminum isopropoxide, aluminum sulfate and the like; a gallium source can be gallium nitrate, gallium oxide and the like; a tin source can be tin tetrachloride and the like; a titanium source ca