合成二甲氧基甲烷技术研究进展

Research progress on dimethoxymethane synthesis technology

二甲氧基甲烷作为用途广泛的化工原料,其合成技术在不断创新与发展。根据反应原料和工艺流程的不同对二甲氧基甲烷合成技术进行了概述与简评,该技术包含甲醇与甲醛催化缩合制备二甲氧基甲烷、甲醇与多聚甲醛反应制备二甲氧基甲烷、甲醇一步法制取二甲氧基甲烷、离子液体电催化氧化甲醇制取二甲氧基甲烷、二甲醚氧化生成二甲氧基甲烷、二溴甲烷合成二甲氧基甲烷、合成气制备二甲氧基甲烷、甲醇与二氧化碳反应制取二甲氧基甲烷等。醇醛缩合制备二甲氧基甲烷仍是当前主流的生产工艺,甲醇一步法制取二甲氧基甲烷工艺因在环境和投资上有优势而被广泛研究,是最具工业化前景的新技术,该技术尚需突破的是兼具氧化还原性与酸性的双功能催化剂。

As a widespread used raw material of chemical industry,dimethoxymethane synthesis technology had been innovated,developed and improved.The synthesis technology for dimethoxymethane was summarized and evaluated according to the differences of reaction feedstock and technological process.These technologies included dimethoxymethane preparation from methanol and formaldehyde by catalytic condensation reaction,methanol and polyformaldehyde reacting to prepare dimethoxymethane,dimethoxymethane production from methanol oxidation using one-step method,ionic liquids electrocatalytic oxidation of methanol to dimethoxymethane,dimethoxymethane production from dimethyl oxidation,dimethoxymethane synthesis from dibromomethane,dimethoxymethane production from syngas,methanol reacting with carbon dioxide to prepare dimethoxymethane,and so on.Dimethoxymethane preparation from methanol and formaldehyde by condensation is still the mainstream process.Dimethoxymethane production from methanol using one-step method is widely studied for its advantages in environment and investment,which will be the most promising new technology for industrialization,and bifunctional catalysts with both redox and acidity are needed for technical breakthrough.