Zeolites are widely used as catalysis in industry. Zeolite Y is a crystalline microporous aluminosilicates with small micropores. The microporosity of zeolite Y plays an important role in its shape selectivity. However, in reactions involving large molecules, these micropores limit the diffusion of bulky reactants/products and reduce the catalytic activity. We present a novel and feasible approach for generating large pores in zeolite Y. The mesoporous zeolites Y were prepared using block copolymer as template, which played as a type of scaffold guiding the aluminosilicates gel grew to zeolite crystals. The high crystallinity zeolites were synthesized avoiding the defects and crystallinity reduced by traditional methods. These catalysts were evaluated by determining the micro-activity using the light diesel oil as sample and results showed that the mesoporous catalyst had the highest micro activity and lowest coke yield. Such facile and direct synthesis provides a superior method to produce other mesoporous materials, which can be used for not only catalytic cracking catalysts but also a wide variety of applications in oil refining.

Synthesis of mesoporous zeolite Y and its applications in catalytic reaction

251st National Meeting (2016)

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