Abstract:

Recent research progress of hierarchical zeolites is reviewed with respect to their structures，properties and synthesis. Due to the insertion of mesoporous，the yield and selectivity of target products are improved，thus the hierarchical zeolites have large potential applications in catalysis. The synthesis of hierarchical zeolites using two kinds of molecular sieve is discussed，especially the methods of post-processing and templating. The degree of desilication or dealumination，and suitable but cheap templates are essential techniques to develop hierarchical zeolite materials. The application prospect of hierarchical zeolites in methanol to propylene reaction is discussed，and an appropriate ratio of micro/ mesopores，appropriate distribution as well as intensity of catalyst are the key issues for its application.