(600d) Electrochemical CO2 Utilization: Scalable System Operation for Formic Acid Production
AIChE Annual Meeting
2020 Virtual AIChE Annual Meeting
Sustainable Engineering Forum
Novel Approaches to CO2 Utilization I
Tuesday, November 17, 2020 - 8:45am to 9:00am
University of Kentuckyâs Center for Applied Energy Research (UK CAER) is currently investigating reactor designs to address the challenges associated with electrochemical CO2 conversion to FA . The current reactor system employs: (1) an organic-based charge carrier which shuttles charge directly to the catalyst to enable CO2 reduction to FA; (2) novel electrode materials to mitigate large voltages and improve conductivity; and (3) a flow system which not only allows for the volumetric scale-up of both charge carrier and catalyst, but also decouples the charger carrier re-energized and FA production processes to protect the catalystâs stability due to overpotential. Through careful adjustment of electrode, charge carrier, and electrolyte selection, cell resistances have decreased by over 15%, facilitating conduction necessary for effective CO2 reduction to FA. The system uses a highly specific engineered catalyst, which has produced over 100 mM FA at a rate of over 10 mM FA/hour following the aforementioned electrode/charge carrier changes. System design considerations (flow rate, bulk volume) and modeling of the system will also be discussed.
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