SAPO-34 molecular sieve has extremely high specific surface area, good hydrothermal stability, rich proton acidity and ion exchange sites, and its unique eight membered ring three-dimensional poresystem makes it have excellent shape selective catalytic performance of small molecules. It is a widely used solid acid catalyst and cata lyst carrier.

SAPO-34 molecular sieve has a very good application effect intheselective catalytic reduction of NOx and the catalytic process of methanol to light olefins.