Contribution of electron microscopy to bridge the gap between model and real catalysts

  报告时间:2014725日(星期五)上午900 

  报告地点:航天催化与新材料研究室(306 

  报告人: Dr. Juan José  Delgado Jaén 

  Universidad de Cádiz, Spain 

  报告摘要: 

  It is unquestionable that one of the most important challenges of our society is the development of new energy strategies to tackle global warming and exhaustion of fossil fuels. In this context, catalysis has been proven as a critical enabling science for developing the use of alternative feedstocks, such as biomass or hydrogen, and increasing energy production efficiency.     

  Real catalysts commonly are complex multicomponent systems whose characterization usually demands an insight at the atomic level, and they are continuously posing new challenges and calling for further improvements in Electron Microscopy techniques. On the other hand, real catalysts contain morphological, structural and compositional heterogeneities and it is also obvious the need of developing new methodologies, based in statistical studies, that will give us a real picture of our catalyst. This point is really crucial for the rationalization of structure-activity relationships and understanding the deactivation processes.      

  The major goal of this contribution will be to review, using a number of examples from our most recent work, the possibilities of (Scanning) Transmission Electron Microscopy to reveal the ultimate details of the structure of nanostructured catalysts and how this information allow us gaining some understanding of how they work as catalysts. The lecture will focus on understanding the interaction of CO with gold catalysts and the use of bimetallic catalyst and core shell nano-structured catalysts in the sustainable energy production. 

  报告人简介: 

  Dr. Juan José Delgado Jaén长期从事可持续能源及环境保护领域多相纳米催化剂的研究,重点利用Advanced Electron Microscopy Techniques研究了分子尺度活性中心与性能的关联。Dr. Juan José Delgado Jaén已在Science, Angew Chem Int Ed, JACS, Adv Mater, J Catal等高水平杂志上发表论文近百篇。     

  报告联系人:1502组 孙汇(9161 

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