圖 | Hans-Joachim Freund教授
Hans-Joachim Freund教授簡介：
Freund教授是德國科學院院士、歐洲人文和自然科學院院士、歐洲科學院院士、美國人文與科學院外籍院士、巴西科學院外籍院士、匈牙利科學院外籍院士，University Aix Marseille, Karlsruhe Institute of Technology (KIT) 和
Friedrich-Alexander-Universität Erlangen-Nürnberg榮譽博士，美國物理學會和英國物理學會會士，中國化學會榮譽會士。他在表面科學與多相催化基礎研究領域做出了引領性的研究成果，獲得眾多國際獎項，包括歐洲科學院Blaise Pascal Medal、美國化學會 Gabor A. SomorjaiAward 、美國真空學會Gaede-Langmuir Award、北美催化聯合會和歐洲催化聯合會Michel Boudart Award等。迄今為止，Freund教授共培養了130餘名博士和80餘名博士後，作了770 餘次邀請報告，發表815餘篇學術論文，其論文被引用45000餘次。
2019年5月7日，Freund教授在中國科學技術大學講授自己的學術研究，報告以“Model Systems in Heterogeneous Catalysis: Surface Chemistry of Complex Systems at the Atomic Level”為題。瞭解更多詳情，請關注“蔻享學術”公眾號！（
https://mp.weixin.qq.com/s/RCFIsbBGV6oK7J8xNXDEJw）
報告摘要：
The investigation of model systems has successfully demonstrated that surface science results may be directly transferred to heterogeneous catalysis under realistic conditions, and it offers an approach to correlate structural and electronic information at the atomic level with reactivity. An approach to model oxide-supported metal catalysts using a thin film approach is presented. Here the oxide support is prepared as a thin oxide film on a metal support, which guarantees the applicability of the tool-box of surface science even in the case nominally insulating substrates and metal particles are grown via physical vapor deposition. The sites at the oxide-metal interface are of particular interest, as they as often held responsible to present the active site. Au particles supported on an MgO(100)/Mo(100) have been predicted to get negatively charged. It is shown that this prediction is verified and reactivity is induced at the metal particle rim(2-4). It is discussed how this scenario may be used to control charge on powder metal catalysts (5). In the second part of the presentation we discuss how surface science studies may be employed to understand fundamental issues with respect to reaction in confined space: A thin silica film is prepared on a Ru(0001) surface and is only bound to the substrate by dispersive foeces and thus leaves a space open between the metal surface and the oxide film to use our SMART-LEEM/PEEM instrument to follow the oxidation of hydrogen provided from the gas phase by oxygen adsorbed on the Ru(0001) surface. The experimental results are discussed in comparison to theoretical calculations.
