SYNTHESIS METHOD FOR MESOPOROUS AND MICROPOROUS SAPO-34 MOLECULAR SIEVE

摘要

Disclosed is a synthesis method for a mesoporous and microporous SAPO-34 molecular sieve. In the method, a SAPO-34 molecular sieve with a mesoporous and microporous composite structure is obtained by using an organic silicon compound containing a quaternary ammonium cation as a silicon source and a structure directing agent simultaneously, in combination with the use of a seed crystal. The prepared SAPO-34 molecular sieve is used as a catalyst in an MTO reaction and shows an excellent catalytic performance, and the catalyst life is notably prolonged.