STA-20, novel molecular sieve framework type, preparation and method of use

摘要

We describe STA-20, a molecular sieve with a novel backbone type. STA-20AP (as prepared), as SDA, alkylamines such as trimethylamine, and 1,6- (1,4-diazabicyclo [2.2.2] octane) hexyl cation (from diDABCO-C6) It can have. Lower alkyl ammonium hydroxides, such as tetrabutyl ammonium hydroxide, can be used as a pH modifier to make SAPO STA-20. The fired product, STA-20C, formed from STA-20 in the as-prepared state is also described. Methods of preparing STA-20, methods of activating STA-20 by calcination, and metal-containing calcination counterparts of STA-20 in a variety of processes, such as treating waste gases and converting methanol to olefins, It is explained together with the method of using STA-20 and the metal-containing baking counterpart of STA-20. [Selected figure] Figures 1A-C.