SAPO-34 zeolites prepared using calcined-MCM-41 as silica source

摘要

SAPO-34 molecular sieve was successfully synthesized using calcined-MCM-41 as silica source and morpholine as a template. The influence of MCM-41 content on the synthesis was investigated. The result shows that pure SAPO-34 could be obtained in a wide range of the n (SiO_2)/n (Al_2O_3) ratio in the starting gel. Moreover, increase the n (SiO_2)/n (Al_2O_3) ratio has a negative effect on crystallinity while high silicon incorporates into the framework of SAPO-34.