S)-Mecysmox]3(OH)2(H2O)}·9H2O (1), and its application as a robust and efficient solid catalyst for the cycloaddition reaction of ethylene/propylene oxide with CO2 to afford ethylene/propylene carbonate with yields of up to 95% and selectivity of up to 100%. These results nicely illustrate the great potential of MOFs to be game changers for the selective synthesis of industrially relevant products, representing
金属有机框架(MOF)有限空间内的主客体化学提供了几乎无限的可能性,这是其他材料难以实现的。在这里,我们报告了一种新型水稳定三维 MOF 的合成和物理表征,通过单晶 X 射线衍射获得原子分辨率,该 MOF 衍生自氨基酸S -甲基- L -半胱氨酸,SrZn 6 [( S , S )-Mecysmox] 3 (OH) 2 (H 2 O)}·9H 2 O ( 1 ) 及其作为稳定高效的固体催化剂在环氧乙烷/环氧丙烷与 CO 2环加成反应生成乙烯/碳酸丙烯酯,收率高达95%,选择性高达100%。这些结果很好地说明了 MOF 在选择性合成工业相关产品方面具有改变游戏规则的巨大潜力,是当前多相催化剂的强大替代品。
Process for the preparation of dialkyl carbonates
申请人:Bayer Aktiengesellschaft
公开号:US04434105A1
公开(公告)日:1984-02-28
A process for preparing a dialkyl carbonate which comprises contacting an alkylene oxide with an aliphatic or cycloaliphatic alcohol and carbon dioxide in the presence of a catalyst at an elevated temperature.