Rapid synthesis method of small-crystal-grain ZSM-5 molecular sieve

US10099932B2 · kind B2 · utility

Assignees

• RESEARCH INSTITUTE OF SHAANXI YANCHANG PETROLEUM (GROUP) CO., LTD. · CN
• Dalian University of Technology · CN

Inventors

• Wei Zhang · Jinan, CN
• Xiongfu Zhang · Xi'an, CN
• Dapeng Li · Shenyang, CN
• Ruimin Gao · Chengdu, CN
• Yongbin Lu · Xi'an, CN
• Shuqin Zhang · Taiyuan, CN
• Mingfeng WANG · Xi'an, CN
• Pengju Huo · Xi'an, CN
• Si-Yu Li · Xi'an, CN
• Chengda Wang · Xi'an, CN
• Weiwu Xu · Xi'an, CN
• Yuan Zhang · Wuxi, CN
• Zhiling LIU · Xi'an, CN
• Ting Pei · Xi'an, CN
• Hua Zhang · Hangzhou City, CN
• Gang Chen · Walnut, US
• Haiou Liu · Xi'an, CN

Key dates

• Filing date: Jul 14, 2015
• Grant date: Oct 16, 2018
• Expiry date: Sep 24, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/62
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A rapid synthesis method of a small-crystal-grain ZSM-5 molecular sieve, the method comprising: preparing a mixed silicon-aluminum glue solution, placing the solution in a crystallization kettle for low-temperature nucleation, enabling high-temperature crystallization growth of the solution, and obtaining a crystallization product, namely, a small-crystal-grain ZSM-5 molecular sieve, the nucleation temperature being 60-120° C., nucleation time being 1-3 hours, a crystallization growth temperature being 150-170° C., and crystallization growth time being 1-3 hours. The method is easy to operate, and has a short operation time, thus being able to complete within 6 hours; in addition, the product has uniform grain sizes, is in a mono-dispersed state, and has a high crystallization degree to a submicron degree.