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DTSTART;TZID=America/Los_Angeles:20201118T163000
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CREATED:20201007T181128Z
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UID:13382-1605717000-1605717000@www.chemistry.ucla.edu
SUMMARY:Chem 278: Prof. Caroline Saouma
DESCRIPTION:“Thermodynamic and Mechanistic Studies of C02Reduction Catalysts” \n Abstract: The increase in global energy demands\, coupled with growing environmental concerns\, necessitates the development of viable technologies to store solar energy. Towards this end\, my group is focused on developing efficient catalysts that convert CO2 to CO\, methanol or formic acid. My talk will first describe our mechanistic studies on known CO2 hydrogenation catalysts\, whereby mechanistic insight is gleaned through thermochemical studies\, and allows for tuning the product selectivity. We also have uncovered a unique mechanism for CO2 hydrogenation\, whereby CO2 must first bind to the ligand before subsequent reduction occurs. I will then discuss how we have used the same thermochemical approach to study the mechanism of electrocatalytic CO2 reduction in a combined carbon capture & reduction system. Finally\, I will present a novel ligand scaffold that\, when put on Co\, allows for both the hydrogenation of CO2 to formate and the electrochemical reduction of CO2 to formate; this is unique in that no H2 is produced electrocatalytically. The collective work underscores the importance of the effective hydricity as a parameter of interest and in using thermochemical parameters to rationalize and uncover alternative mechanisms. The studies presented are contextualized in developing an understanding of how to rationally design energy-efficient CO2 reduction catalysts.
URL:https://www.chemistry.ucla.edu/seminars/chem-278-prof-caroline-saouma/
CATEGORIES:Inorganic Chemistry,Seminars
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