Molecular sieve catalyst, preparation method therefor, and application thereof

US12036538B2 · kind B2 · utility

Assignee

• DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES · CN

Inventors

• Hongchao Liu · 东风镇, CN
• Shiping Liu · Columbia, US
• Wenliang Zhu · Dalian, CN
• Zhongmin Liu · 东风镇, CN
• Xiangang Ma · Dalian, CN
• Yong Liu · Dalian, CN
• Ziqiao Zhou · 东风镇, CN
• Youming Ni · Dalian, CN

Key dates

• Filing date: Feb 2, 2019
• Grant date: Jul 16, 2024
• Expiry date: Apr 4, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/38
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Provided are a molecular sieve catalyst, a preparation method therefor, an application thereof. The molecular sieve catalyst contains a modified Na-MOR molecular sieve, and the modification comprises: organic ammonium salt exchange, dealumination treatment, and ammonium ion exchange. The catalyst obtained by the method is used in dimethyl ether for one-step production of methyl acetate. The catalyst has high activity and stable performance, and the needs of industrial production can be satisfied.