"Tackling CO2 Issues by Chemical Conversion and by Reducing CO2 Emission"
Presented by Jingguang Chen, Department of Chemical Engineering, Columbia University
Thursday, March 5, 2020, 4:00 pm — CFN, Bldg 735, Seminar Room, 2nd Floor
Emission of CO2, a byproduct from many industrial processes and power plants, has increased with increasing energy demand and growing population. In this talk we will first give a brief summary of CO2 conversion by H2 [1,2], followed by discussing our recent efforts in converting CO2 by light alkanes. Using a combination of kinetic studies, in situ characterization and DFT calculations, we have identified several classes of catalysts that can activate both CO2 and light alkanes [3,4]. We will then discuss how to achieve net-reduction of CO2 using mass and energy balances in thermocatalysis and electrocatalysis . Finally, we will propose reducing CO2 emission by alternative pathways for N2 transformation reactions, which are currently the most CO2-emitting chemical processes .  S. Kattel, P. Liu and J.G. Chen, "Tuning Selectivity of CO2 Hydrogenation Reactions at the Metal/Oxide Interface", J. Am. Chem. Soc. 139 (2017) 9739.  S. Kattel, P.J. Ramírez, J.G. Chen, J.A. Rodriguez and P. Liu, "Active Sites for CO2 Hydrogenation to Methanol on Cu/ZnO Catalysts", Science, 355 (2017) 1296.  B. Yan, S. Yao, S. Kattel, Q. Wu, Z. Xie, E. Gomez, P. Liu, D. Su and J.G. Chen, "Active sites for tandem reactions of CO2 reduction and ethane dehydrogenation", PNAS, 115 (2018) 8278.  E. Gomez, S. Kattel, B. Yan, S. Yao, P. Liu and J.G. Chen, "Combining CO2 Reduction with Propane Oxidative Dehydrogenation over Bimetallic Catalysts", Nature Commun. 9 (2018) 1398.  B.M. Tackett, E. Gomez and J.G. Chen, "Net reduction of CO2 via its thermocatalytic and electrocatalytic transformation reactions in standard and hybrid processes", Nature Catalysis, 2 (2019) 381.  J.G. Chen, R.M. Crooks, L.C. Seefeldt, et al. "Beyond Fossil Fuel-Driven Nitrogen Transformations", Science, 360 (2018) 873. Jingguang Chen is the Department Chair and
Hosted by: Mingzhao Liu
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