Method for preparing methyl acetate

US9440226B2 · kind B2 · utility

Assignee

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

Inventors

• Youming Ni · Dalian, CN
• Wenliang Zhu · Dalian, CN
• Hongchao Liu · 东风镇, CN
• Yong Liu · Dalian, CN
• Zhongmin Liu · 东风镇, CN
• Shuanghe Meng · Dalian, CN
• Lina Li · 唐家房镇, CN
• Shiping Liu · Columbia, US
• Hui Zhou · Dalian, CN

Key dates

• Filing date: Jan 28, 2014
• Grant date: Sep 13, 2016
• Expiry date: Jan 28, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/34
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides a method for preparing methyl acetate, in which a feed gas containing an organic amine, dimethyl ether, carbon monoxide and optional hydrogen gas goes through a reactor loaded with a H-type mordenite catalyst, to produce methyl acetate; wherein said H-type mordenite catalyst is a H-type mordenite catalyst with adsorption of an organic amine. The method in the present invention improves the catalyst stability and prolongs the catalyst life, by using the H-type mordenite catalyst with adsorption of an organic amine as the catalyst and adding the organic amine in the feed gas to replenish the organic amine desorbed from the catalyst during the reaction.