Atomistic Studies of Reactions on Surfaces

表面反应的原子研究

• 批准号: 9400526
• 负责人: Robert Madix
• 金额: $ 77.12万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-01 至 1999-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9400526&HistoricalAwards=false
• 关键词: Atomistic; Studies; Reactions; Surfaces

9400526 Madix The determination of the relationship between the spatial organization of adsorbed layers and the kinetic description of their reactivity is the goal of this research project supported by the Analytical and Surface Chemistry Program. Temperature dependent scanning tunneling microscopy will be used to isolate, stabilize and image reaction intermediates. This structural information will then be correlated with kinetic studies of these reactions, using thermal desorption spectroscopy as the primary probe of reaction kinetics. Several reaction systems will be investigated, including the oxidation of Cu(110), the desorption of oxygen from Pt(100), the formation of carbonate on Ag(110), and the decomposition of formates and alkoxides on copper surfaces. Each of these systems either shows unusual reaction kinetics or evidence of interesting structural variations in the reacting overlayers. %%% The connection between overlayer ordering and kinetic processes in surface reactions is a relatively unexplored area of surface chemistry. The work of this project will impact on our understanding of the connection between overlayer ordering and surface reactivity, and may have important implications for reactions in organized media well beyond the individual surface reactions to be studied. ***

9400526 Mastrophe吸附层的空间组织和动力学描述的反应性之间的关系的确定是由分析和表面化学程序支持的本研究项目的目标。 温度依赖性扫描隧道显微镜将用于隔离，稳定和图像反应中间体。 然后将这些结构信息与这些反应的动力学研究相关联，使用热脱附光谱作为反应动力学的主要探针。 研究了几个反应体系，包括Cu（110）的氧化，Pt（100）上氧的脱附，Ag（110）上碳酸盐的形成，以及甲酸盐和醇盐在铜表面的分解。 这些系统中的每一个都显示出不寻常的反应动力学或反应覆盖层中有趣的结构变化的证据。 在表面反应中，表层有序化和动力学过程之间的联系是表面化学中相对未探索的领域。 这个项目的工作将影响我们的理解之间的连接overlayer订购和表面反应性，并可能有重要的影响，在有组织的介质中的反应远远超出了个人的表面反应进行研究。 ***