由二氧化碳直接合成碳酸二甲酯

The direct synthesis of dimethyl carbonate from carbon dioxide

由二氧化碳出发的直接合成是碳酸二甲酯合成的新方法 ,可以在金属烷氧基化合物、碱以及负载金属催化剂作用下进行。吸水剂及作为甲基化剂的碘化物的添加可有效提高反应的转化程度 ,反应在超临界二氧化碳溶剂中表现出更高的转化率 ,直接合成反应的核心是二氧化碳的活化 ,二氧化碳对M -O键的插入在反应机理中起关键作用。

The direct synthesis of dimethyl carbonate from carbon dioxide is a novel process The reaction occurs in the presence of metal alkoxy compound, organic or inorganic base and supported metal catalyst The addition of water scavenger and iodide used as the methylating agent promotes the synthetic reaction efficiently The reaction conversion can be enhanced by the introduction of supercritical carbon dioxide The activation of carbon dioxide is the key step for the direct synthesis The insertion of carbon dioxide into metal oxygen bond plays an important role in the reaction mechanism