Although a dated article that does not cover Direct Air Capture (DAC) processes, it is a great article for Northwestern University Chemical engineering and biological engineering department.

What I extrapolated, considering low CO2 partial pressures, is that the optimum surface area could be near 1000-1500 m ^2/g, the optimum pore diameter could be around 4-6 angstroms, and enthalpy of absorption is a parameter that is hard to design. Still, a Qsat of around 20-25 kJ/mol is optimal for dilute systems. Will extrapolation work?

Will it have to? Researchers around the world, including University of Michigan researchers, are using Machine Learning to find the best MOF candidates. I am sure the same is happening for other materials like zeolites.

This was an exciting paper to read.

#CarbonDioxideRewmoval #CarbonCapture #DirectAirCapture #ClimateAction #ChemicalEngineer #RetiredLife #FriendOfMIT

References:

[1] Wilmer, C. E., Farha, O. K., Bae, Y.-S., Hupp, J. T., & Snurr, R. Q. (2012). Structure–property relationships of porous materials for carbon dioxide separation and capture. Energy Environ. Sci., 5(12), 9849–9856.