Aquino A.S.,Laboratorio Of Organometalicos E Resinas Lor |
Aquino A.S.,Grande Rio University |
Bernard F.L.,Laboratorio Of Organometalicos E Resinas Lor |
Bernard F.L.,Grande Rio University |
And 13 more authors.
Journal of the Brazilian Chemical Society | Year: 2014
Although the carbon capture and storage (CCS) technologies are receiving great attention for mitigation of greenhouse gas effect, the increasing costs and energy penalties associated to its implementation are still major drawbacks. However, the use of CO2 as a C1 building block in organic synthesis can be very attractive for the design of environmentally friendly processes. In this work, we have studied both the CO2 sorption and catalytic activities of some imidazolium based ionic liquids (ILs) for cyclic carbonate synthesis. The work demonstrates that the presence of a nucleophilic group in the catalytic system can enhance its performance by the use of an IL with a halide anion or by mixing a halide co-catalyst with ILs. The latter approach allowed to obtain an effective system for CO2 capture constituted by a fluorinated IL plus ZnBr2 that performs cyclic carbonate synthesis with 90% yield and 82% of selectivity. ©2014 Sociedade Brasileira de Química.