METHOD FOR PREPARING POLYOXYMETHYLENE DIMETHYL ETHER CARBONYL COMPOUND AND METHYL METHOXYACETATE
申请人:DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
公开号:US20170001941A1
公开(公告)日:2017-01-05
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.
一种用于制备聚甲氧基甲醚羰基化合物和/或甲基甲氧基乙酸酯作为生产乙二醇的中间体的方法,包括通过携带酸性分子筛催化剂的反应器将原料:聚甲氧基甲醚或甲醇与一氧化碳和氢气一起通过,并在适当条件下进行反应以制备相应的产物,其中不添加其他溶剂,反应过程为气液固三相反应,聚甲氧基甲醚或甲醇原料具有较高的转化率,每种产物具有较高的选择性,催化剂寿命长,无需使用额外溶剂,并且反应条件相对温和。