报告题目：Rational Design of Methanol Synthesis Catalysts using Mechanistic Insights

报告时间：2019年9月4日（星期三）上午10:00

报告地点：催化基础国重楼三楼大会议室

报告人：Dr. Melis S. Duyar, Chemical and Process Engineering, University of Surrey, UK

　　报告摘要：

　　Methanol can be a clean, sustainable fuel to supply the world's increasing energy demand and its synthesis from carbon dioxide (CO₂) using renewable energy can have major impacts on closing the anthropogenic carbon cycle. Methanol is commercially produced at moderately high temperature (200-300^oC) and high pressure (50-100 bar) from CO/CO₂/H₂ mixtures (syngas) over zinc-promoted copper catalysts. Building on theoretical and experimental research on the mechanism of methanol synthesis from CO and CO₂, a rational catalyst design approach has been implemented to develop intermetallic and transition metal phosphide catalysts with improved performance compared to copper based catalysts. One recent example of this process of rational catalyst design is the development of MoP catalysts, which show robust activity in CO/CO₂/H₂ feeds of varying compositions; upon determining that transition metal surfaces undergo deactivation due to high coverages of formate (from CO₂ hydrogenation), we were able to recognize that some metal phosphides can impose a geometric constraint on formate binding mode, which results in a weaker interaction and hence prevents poisoning; this has enabled the development of MoP catalysts with surface area normalized activities that surpass the performance of conventional metal catalysts by circumventing scaling limitations. This study illustrates how rational catalyst synthesis based on both theoretical and experimental insight can be instrumental for catalyst discovery. In addition to transition metal phosphides, examples of using a rational catalyst design approach also extend to intermetallic catalysts, which will also be discussed.

　　报告人简介:

　　Dr. Melis Duyar is Lecturer of Chemical and Process Engineering at the University of Surrey. She has a research background in heterogeneous catalysis for energy and environmental applications. Her current research interests focus on the development of novel adsorbent materials for CO₂ capture and catalytic materials for the production of sustainable fuels and chemicals from carbon based feedstocks, including the conversion of syngas to higher alcohols and thermochemical reduction of CO₂ to valuable products. Dr. Duyar received her B.Sc. (2012) in Chemical and Biological Engineering from Koc University in Istanbul, Turkey. She obtained her M.S. (2013) and Ph.D. (2015) in Earth and Environmental Engineering from Columbia University in the City of New York and conducted post-doctoral research (2015-2017) in the Chemical Engineering Department at Stanford University. Prior to her academic appointment at the University of Surrey, Dr. Duyar worked at the US Department of Energy’s SLAC National Accelerator Laboratory as Associate Staff Scientist in the SUNCAT Center for Interface Science and Catalysis and was also Lecturer of Chemical Engineering at Stanford University for 2 years (2017-2019).

　　报告联系人： 05T7组 唐晓璐

　　联系电话：82463721