Title: Conversion of Carbon Dioxide through Catalysis and Electrocatalysis
Speaker：Jingguang Chen (Thayer Lindsley Professor of Chemical Engineering, Columbia University)
Time：June 17, 2016 (Friday), 10:00-11:30
Location：Room 120, Chemistry Building
Abstract: Ocean acidification and climate change are expected to be two of the most difficult scientific challenges of the 21st century. Converting CO2 into valuable chemicals and fuels is one of the most practical routes for reducing CO2 emissions while fossil fuels continue to dominate the energy sector. The catalytic reduction of CO2 by H2 can lead to the formation of three types of products: CO through the reverse water-gas shift (RWGS) reaction [1], methanol via selective hydrogenation [2], and hydrocarbons [3]. Our research approaches involve the combination of DFT calculations and surface science studies over single crystal surfaces, evaluations over supported catalysts, and in-situ characterization under reaction conditions. In the current talk we will present some of our recent results in CO2 conversion via both heterogenerous catalysis [4] and electrocatalysis [5]. We will also discuss the generation of CO2-free H2 [6,7], which is critical for net CO2 reduction. We will conclude by discussing challenges and opportunities in this important research field [8].
References:
[1] M.D. Porosoff, X. Yang, J.A. Boscoboinik, and J.G. Chen, “Molybdenum carbide as alternative catalysts to precious metals for highly selective reduction of CO2 to CO”, Angewandte Chemie International Edition, 53 (2014) 6705.
[2] X. Yang, S. Kattel, S.D. Senanayake, J.A. Boscoboinik, X. Nie, J. Graciani, J.A. Rodriguez, P. Liu, D.J. Stacchiola and J.G. Chen, “Low pressure CO2 hydrogenation to methanol over gold nanoparticles activated on a CeOx/TiO2 interface”,Journal of the American Chemical Society, 137 (2015) 10104.
[3] S. Kattel, W. Yu, X. Yang, B. Yan, Y. Huang, W. Wan, P. Liu and J.G. Chen, “CO2 hydrogenation on oxide-supported PtCo catalysts: Fine-tuning selectivity using oxide supports”, Angewandte Chemie International Edition, (2016) DOI: 10.1002/anie.201601661
[4] M.D. Porosoff, M. Myint, S. Kattel, Z. Xie, E. Gomez, P. Liu and J.G. Chen, “Identifying different types of catalysts for CO2 reduction by ethane through dry reforming and oxidative dehydrogenation”, Angewandte Chemie International Edition, 54 (2015) 15501.
[5] Q. Lu, J. Rosen, Y. Zhou, G.S. Hutchings, Y.C. Kimmel, J.G. Chen and F. Jiao, “A highly selective and efficient electrocatalyst for carbon dioxide reduction”, Nature Communications, 5 (2014) 3242.
[6] M.R. Stonor, T.E. Fergusonb, J.G. Chen and A.-H. Park, “Biomass conversion to H2 with substantially Suppressed CO2 formation in the presence of Group I & Group II hydroxides and a Ni/ZrO2 catalyst”, Energy & Environmental Science, 8 (2015) 1702.
[7] Q. Lu, G.S. Hutchings, W. Yu, Y. Zhou, R.V. Forest, R. Tao, J. Rosen, B.T. Yonemoto1, Z. Cao, H. Zheng, J.Q. Xiao, F. Jiao and J.G. Chen, “Highly porous non-precious bimetallic electrocatalysts for efficient hydrogen evolution”, Nature Communications, 6 (2015) 6567
[8] M.D. Porosoff, B. Yan and J.G. Chen, “Catalytic reduction of CO2 by H2 for synthesis of CO, methanol and hydrocarbons: Challenges and opportunities”, Energy & Environmental Science, 9 (2016) 62.
