单波长可见光照射下二氧化碳羰基化反应研究

近年来 ,由于能源及基本原料短缺问题日益紧迫以及二氧化碳大量排放导致的“温室效应”对人类生存环境及生态平衡影响日益加剧等原因 ,促使二氧化碳化学作为绿色化学的研究内容之一迅速发展起来 .以二氧化碳为碳源与烯烃进行羰基合成也取得了很大进展 [1,2 ] ,但反应一般要求在高温高压下进行或者采用贵金属作为催化剂 .最近 ,利用二氧化碳进行光催化合成羰基化产物也有了一定进展 [3] ,反应条件得到大大改善 .我们[4 ] 曾报道在紫外光照射条件下 ,以 Co(acac) 2 为催化剂二氧化碳与环己烯进行羰基化反应制备环己基甲酸甲酯 ,反应能在常温…

Studies on the Carbonylation of Carbon Dioxide Under Single Wavelength Visible Light Irradiation

It is the first time to report the carbonylation of cyclohexene with carbon dioxide under ambient conditions irradiated at single wavelength visible light.The effects of catalysts, the additives and different wavelength have been investigated, which indicated that the metal complexes such as CoTPP and MnTPP acted as catalyst of the carbonylation as well as sensitizer under the irradiation of special wavelength visible light. Furthermore, when adding sodium proponiate to the solution, the catalysts such as PCFe would be activated and the formation of ester was promoted obviously. We also detected the quantum yield of this reaction, and found it can reach to 10~-2. As far as the quantum yield and taking good advantage of the energy from solar was concerned. HSO_3PCCo was the better catalyst for the carbonylation.