The synthesis of mesoporous zeolites normally requires the presence of both mesoscale and small organic templates with the aim of simultaneously directing the formation of mesoporous and microporous structure in the zeolites. Despite much encouraging progress in recent years, the practical applications of mesoporous zeolites are still lower than those of conventional zeolites. The drawback is probably the use of high-cost organic templates and relatively complex procedures for synthesizing mesoporous zeolites. Considering recent successful examples for organotemplate-free synthesis, it is strongly desirable to synthesize mesoporous zeolites in the absence of any organic tempaltes, which would not only avoid the use of expensive organic templates but also save the energy for removing these templates by calcination at high temperatures. For example, by combing seed-directed route, it is successful to synthesize mesoporous MFI zeolite under organotemplate-free condtions.

Greener synthesis of mesoporous zeolites

255th National Meeting (2018)

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