A new generation of "molecular basket" sorbents (MBS) has been developed by the optimum combination of the nanoporous material and CO 2/H 2S-philic polymer sorbent to increase the accessible sorption sites for CO 2 capture from flue gas (Postdecarbonization), and for CO 2 and H 2S separation from the reduced gases, such as synthesis gas, reformate (Predecarbonization), natural gas, coal/biomass gasification gas, and biogas. The sorption capacity of 140 mg of CO 2/g of sorb was achieved at 15 kPa CO 2 partial pressure, which shows superior performance in comparison with other known sorbents. In addition, an exceptional dependence of MBS sorption performance on temperature for CO 2 and H 2S was found and discussed at a molecular level via the computational chemistry approach. On the basis of the fundamental understanding of MBS sorption characteristics, an innovative sorption process was proposed an d demonstrated at the laboratory scale for removing and recovering CO 2 and H 2S, respectively, from a model gas. The present study provides a new approach for development of the novel CO 2/H 2S sorbents and may have a major impact on the advance of science and technology for CO 2/H 2S capture and separation from various gases.
All Science Journal Classification (ASJC) codes
- Colloid and Surface Chemistry