题 目: Surface chemistry of hydrocarbons
讲座人: Prof. Dr. Hans-Peter Steinrück
德国爱兰根纽纶堡大学化学系
(Chair of Physical Chemistry at the University of Erlangen- Nuremberg, Germany)
时 间: 2014年4月21日(星期一)
上午10:00 - 11:30
地 点: 卢嘉锡楼二楼报告厅（202）
个人简介：Steinrück教授1985年于格拉茨工业大学获博士学位，1985-86年于斯坦福大学进行博士后研究，1998年聘为爱兰根纽纶堡大学教授。曾担任德国Bessy II用户委员会主席、欧洲ESRF和BESSY科学指导委员会的成员、德国物理学会表面科学部的主席、爱兰根纽纶堡大学副校长及自然科学院院长等职，主要致力于表面物理、材料科学等领域的研究，并取得了一系列杰出成绩，在PRL、JACS、Angw. Chem.等国际学术刊物上发表论文220余篇，在科研院所及学术会议上做邀请报告140余次。
报告摘要：X-ray photoelectron spectroscopy (XPS or ESCA) is a versatile tool to investigate chemical reactions on surfaces. At third generation synchrotron radiation facilities, such as BESSY II in Berlin, XPS studies can be performed with high resolution and in situ, during adsorption or during heating. From the binding energies of the adsorbate and substrate core levels, detailed information not only on the chemical composition, chemical state and adsorption sites, but also on the vibronic final state in the photoemission process itself can be derived. In this presentation, three different examples concerning the adsorption of hydrocarbons will be addressed [1]. The first deals with the adsorption of small saturated and unsaturated hydrocarbons on metal surfaces. From high-resolution XP spectra, detailed information on adsorption sites, dissociation and the formation of new species are derived. The vibrational fine structure of the XP spectra is analyzed in detail and can be used to identify various surface intermediates. The second example addresses the formation of supported graphene on metal surfaces, including the introduction of hetero-atoms such as nitrogen and boron in the lattice. Finally, the third example concerns the adsorption and reaction of a much more complex molecule, namely the liquid organic hydrogen carrier (LOHC) dodecahydro-N-ethylcarbazole, on metal surfaces. Hydrogen storage in LOHCs is a possible future technology to circumvent the challenges in hydrogen storage.
