Department of Chemistry
In order to achieve high-efficiency conversion of CO2 into valuable chemicals, and to exploit new applications of organobismuth compounds, cationic organobismuth complex with 5,6,7,12-tetrahydrodibenz[c,f][1,5] azabismocine framework was examined for the first time for the coupling of CO2 into cyclic carbonates, using terminal epoxides as substrates and tetrabutylammonium halide as co-catalyst in a solvent-free environment under mild conditions. It is shown that the catalyst exhibited high activity and selectivity for the coupling reaction of CO2 with a wide range of terminal epoxide. The selectivity of propylene carbonates could reach 100%, and the maximum turnover frequency was up to 10740 h−1 at 120°C and 3 MPa CO2 pressure when tetrabutylammonium iodide was used as co-catalyst. Moreover, the catalyst is environment friendly, resistant to air and water, and can be readily reused and recycled without any loss of activity, demonstrating a potential in industrial application.
cationic organobismuth complex - terminal epoxide - carbon dioxide - coupling - cyclic carbonate
Source Publication Title
Frontiers of Environmental Science and Engineering in China
Link to Publisher's Edition
Zhang, Xiaowen, Weili Dai, Shuangfeng Yin, Shenglian Luo, and Chak-Tong Au. "Cationic organobismuth complex as an effective catalyst for conversion of CO2 into cyclic carbonates." Frontiers of Environmental Science and Engineering in China 3.1 (2009): 32-37.