Jennifer Wilcox gives talk on "Carbon Capture and Reliable Storage"
The scale by which CO2 must be mitigated worldwide dwarfs the existing chemical industry, making utilization of CO2 as a chemical feedstock a minor component of the portfolio of mitigation options. Carbon capture and storage is one strategy that could potentially mitigate gigatons of CO2 emissions per year, provided geological storage of CO2 is feasible. The scale and energy requirements associated with CO2 separation processes will be presented. Strategies based upon catalytic membrane separation processes in particular, will be of focus. Regeneration of CO2 is known to be a significant component of sorption-based separation processes and is absent when using membrane technologies. This work involves the adsorption, dissociation, and sub-surface diffusion of N2 in Group V-based metals, including vanadium, niobium, and their alloys with ruthenium. Experimental N2 flux measurements have been carried out to validate the theoretical predictions. Application of separation of N2 to use as a feedstock for ammonia synthesis will be presented.