(572f) Novel Sorbents for Effective CO2 Capture, Separation and Storage By Using Porous Polymers

Integrated Gasification Combined Cycle (IGCC) has been emerged as an efficient alternative to post and oxy-combustion systems for power generation with controllable CO₂ capture and separation. However, this system operates and requires separation of gases at high pressure prior to combustion, which subsequently demands highly stable material for CO2 capture, and separation. Pre-combustion flue gas capture has been instigated as an alternative to circumvent the costly procedures of materials regeneration utilized by the energy industry for CO₂ capture and separation. Stability of the porous structure and repeated use at high pressure and high temperature are among the essential requirements for the efficient materials to be used for industrial level CO₂ separation. Herein we give a snapshot of out latest study on CO₂ adsorption-desorption performance by using nanoporous covalent organic polymers (COPs), which can operate efficiently and repeatedly at elevated pressure of 200 bars and above. Results indicated that the newly synthesized COPs materials (COP-8, COP-8, COP-10, FC-COP84, FC-COP91, FC-COP97) can adsorbed large quantity of CO₂ at 200 bars and at various temperature also these materials show appreciable amount of selectivity amongst the other gases including N2, CH4 and H2. All COPs materials have shown very stable performance including reusability. Upon comparing with other materials like hyper cross-linked polymers, amine modified SBA-15], poly-benzimidazole activated carbon, and organic networks, it was found that covalent organic polymers presented here have high CO₂ uptake capacity, release very low heat of adsorption and possess very good mass transfer coefficient.