The primary objective of the project is to develop novel metal-organic solvents for CO2 capture having significantly lower energy penalty than state-of-art methyl-ethanolamine (MEA) based solvents. The lower energy penalty is a consequence of lower assumed absorption energy for the novel solvents.
In the project we will find metal-organic solvents that have similar CO2 sorption capacities as amine based solvents. One of the major R&D challenge will be to improve the water solubility of the metal-organic complex used to increase the volumetric absorption capacity. Based on measured absorption kinetics and isotherms of CO2, the most promising metal-organic solvents will be benchmarked against state-of-art MEA-solvent based post-combustion CO2 capture technology. For the most promising solvents we will find ways to prepare the metal-organic component in cost efficient large scale synthesis.
So far the feasibility of a first metal organic complex as active component in an absorption solvent has been proved. Isotherm data have been recorded as well as estimates of CO2 absorption kinetics. Fast sorption kinetics and promising CO2/metal-organic component capacity lead the project into its Phase 2. We are now in the process of obtaining a full mechanistic understanding of how the metal-organic solvent works and up-scaling of synthesis route to kg scale that will allow for a complete benchmarking of the metal-organic solvent against MEA solvent.