Tailoring Metal Oxide Redox Properties for Sustainable Energy Conversion

报告人：Prof. Fanxing Li（North Carolina State University）

报告时间：2018年10月12日（星期五）下午15:00

报告地点：新利18彩票 江浦校区浦江楼302会议室

报告简介：

Unlike conventional fuel conversion processes which oxidize carbonaceous molecules with gaseous oxidants, the chemical looping strategy seeks to intensify fossil fuel conversion processes using lattice oxygen of transition metal oxides. In a typical chemical looping scheme, carbonaceous molecules are oxidized by active lattice oxygen (O₂^-) in the transition metal oxide, which functions as an oxygen carrier, a.k.a. redox catalyst. In a subsequent step, the O₂^-deprived oxygen carrier is replenished by a gaseous oxidant. In addition to fossil fuel combustions, tailored redox catalysts can be applied for a variety of applications including selective oxidation, water-splitting, and CO₂reduction.

This presentation exemplifies the use of iron and manganese containing mixed oxides for methane partial oxidation, oxidative dehydrogenation (ODH) of ethane, water-splitting, and CO₂reduction. A number of redox catalysts composed of iron and/or manganese oxides are synthesized and characterized. Rational strategies to improve the redox activity, product selectivity, and/or water-splitting and CO₂reduction conversions are investigated through the assistance of ab-initio calculation tools and mechanistic investigations. Compared to traditional heterogeneous catalysts, the redox catalysts in the current study show the potential to be more selective. They also possess excellent redox stability. Close to 100% water and CO₂reduction efficiencies are shown to be achievable through rational selection of mixed metal oxides.

报告人简介：

Dr. Fanxing Li is an Associate Professor in the Chemical and Biomolecular Engineering Department at North Carolina State University. Dr. Li received his BS and MS degrees in chemical engineering from Tsinghua University in 2001 and 2004, respectively. He received his PhD at the Ohio State University in 2009.

Dr. Li's study involves Energy and Environmental Engineering, Particle Technology, Biomass and Fossil Energy Conversion, CO₂Capture.

Dr. Li has published over 60 journal articles and book chapters. He is also an inventor/co-inventor of 15 patents and patent applications. He has won numerous awards including the “20 under 40” by the American Society for Engineering Education, Best PhD in Particle Technology Award, the U.S. National Science Foundation CAREER Award, SABIC Young Professional Award, the NC State Sigma Xi Faculty Research Award, and was named as a NC State University Faculty Scholar.