A method of synthesizing zeolite beta.

摘要

A large crystal zeolite Beta having a broad range of silica-to-alumina ratios, i.e. 20-1000, is synthesized with a chelating agent in the form of a tertiary alkanolamine such as triethanolamine in the synthesis mixture along with an organic directing agent such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The resultant highly siliceous zeolite Beta is useful as a cracking catalyst particularly when treated with a phosphorus compound.