甲醇/二甲醚氧化转化研究进展

Research progress in the oxidative conversion of methanol/dimethyl ether

由甲醇/二甲醚通过催化氧化合成高附加值含氧化学品(如甲醛、甲酸甲酯、甲缩醛、聚甲氧基二甲醚等),具有原子经济性好、产品有特色、碳排放低的优势,作为高值利用途径得到了广泛关注。在甲醇/二甲醚氧化转化的过程中也面临着一系列挑战,包括低温下C-H键活化困难、高温时易发生深度氧化,以及更大分子产物中C-O键的可控链增长难度大等问题。本综述将重点介绍相关研究团队在低温下甲醇/二甲醚分子中C-H键的活化断键规律以及在更长C-O键可控链增长方面的最新研究进展,勾勒出几个代表性催化反应机制的概貌,以期为这一领域及相关研究提供有价值的参考。

The synthesis of high-value-added oxygenated chemicals(such as formaldehyde,methyl formate,dimethoxymethane,polymethoxy dimethyl ether,etc.)from methanol/dimethyl ether through an oxidative route boasts advantages of high atom utilization efficiency,distinctive product characteristics,and low carbon emissions,attracting significant attention as a pathway for high-value utilization.However,the oxidation conversion of methanol/dimethyl ether also confronts several challenges,including difficulty in activating C-H bonds at low temperatures,susceptibility to deep oxidation at high temperatures,and difficulty in controlling the chain growth of C-O bonds in larger molecular products.This review will focus on the latest progress in elucidating the mechanisms of the activation and cleavage of C-H bonds in methanol/dimethyl ether molecules at low temperatures and the controllable chain growth of longer C-O bonds by relevant research teams.It aims to outline several representative catalytic reaction mechanisms,thereby providing valuable insights for this field and related research endeavors.