Dalian University of Technology

Research Institute of Shaanxi Yanchang Petroleum (Group) Co., Ltd.

Jiuchang He

Wei Zhang

Ruimin Gao

Hua Zhang

Yuan Zhang

Gang Chen

Yongbin Lu

Si Li

Zhiling Liu

Xiongfu Zhang

Shuqin Zhang

Ting Pei

Mingfeng Wang

Dapeng Li

Pengju Huo

A method for directly preparing an empty shell type small grain ZSM-5 molecular sieve. The method comprises: uniformly mixing and stirring an organic template agent, a silicon source and water; dripping an aqueous solution of an aluminum source into the mixture; preserving room temperature, and continuously stirring for a period of time; and performing hydrothermal crystallization, and washing, drying and roasting the obtained product to obtain the molecular sieve. The molecular sieve has high degree of crystallinity and uniform particle size. Moreover, the method requires short time, simple operation and only one step, no extra surfactant is needed, and secondary acid and alkali treatment is not needed.

One-step preparation method for hollow shell type small grain ZSM-5 molecular sieve

Growing community of inventors

Xi'an, China

Jiuchang He