Presidential Young Investigator Award: Studies of MoleculesChemisorbed on Metal Particles

这项研究是实验物理化学计划的一部分，旨在开发催化机理和催化中毒的预测模型。这项研究得到了总统青年研究员奖(PYI)的支持。在需要回答的基本问题中有：有多少表面金属原子参与了单个吸附分子的成键？单个吸附粒子的金属S成键的相对贡献是什么？金属-吸附络合物的电子结构和几何构型如何随金属团簇的大小和组成以及其他物种的共吸附而变化？将研究烷烃与尺寸选定的金属团簇的相互作用。还将研究一氧化碳与氢或一氧化氮的共吸附研究。时间分辨激光光谱技术将被用来获得中间物种的动力学、能级和结构。

This research, part of the Experimental Physical Chemistry Program, is designed to develop predictive models for catalytic mechanisms and catalytic poisoning. This research is supported by a Presidential Young Investigator (PYI) award. Among the fundamental questions to be answered are: How many surface metal atoms participate in the bonding of a single adsorbate molecule?, What are the relative contributions of metal s bonding of a single adsorbed particle? and How do the electronic structure anmd geometry of the metal-adsorbate complex vary with metal cluster size and composition, and with coadsorption of other species? The interaction of alkanes with size-selected metal clusters will be studied. Coadsorption studies of carbon monoxide with hydrogen or nitric oxide will also be studied. Techniques of time resolved laser spectroscopy will be used to obtain the dynamics, energy levels and structures of intermediate species.