Method for preparing polyoxymethylene dimethyl ether carbonyl compound and methyl methoxyacetate

US9708240B2 · 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: Dec 23, 2013
• Grant date: Jul 18, 2017
• Expiry date: Dec 23, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for preparing a polyoxymethylene dimethyl ether carbonyl compound and/or methyl methoxyacetate as intermediates for producing ethylene glycol, which comprises passing a raw material: polyoxymethylene dimethyl ether or methylal together with carbon monoxide and hydrogen gas through a reactor carrying an acidic molecular sieve catalyst, and performing a reaction to prepare a corresponding product under an appropriate condition where no other solvent is added, in which the process of the reaction is a gas-liquid-solid three-phase reaction, the raw material of polyoxymethylene dimethyl ether or methylal has a high conversion rate, each product has a high selectivity, the catalyst has a long service life, additional solvents are not required to be used, and reaction conditions are relatively mild.