ADSORPTION ENERGETICS ON WELL-DEFINED SURFACES BY MICROCALORIMETRY

在分析和表面化学项目的支持下，华盛顿大学的Charles坎贝尔教授和他的同事正在测量吸附在特征良好的金属和半导体表面上的小分子和金属原子的详细吸附和反应能量。 使用一个独特的微量热的方法，吸附能和金属-碳和金属-氧键的键强度的测定。 更大，更复杂的有机物种的吸附和相互作用也进行了研究。 这些精确的数据有助于理解与多相催化、化学气相沉积过程和固体表面粘附有关的反应机制。 吸附分子和固体表面之间的化学键强度是了解非均相催化和电子设备制造等重要技术过程的关键信息。 这些信息很难直接获得。 华盛顿大学的坎贝尔教授和同事开发了一种独特的微量热方法来获得这些信息，该方法已应用于广泛的重要表面化学系统。 在分析和表面化学计划的支持下，这些重要的测量将继续并扩展到与金属和半导体表面相互作用的有机分子。

With the support of the Analytical and Surface Chemistry Program, Professor Charles Campbell and his coworkers at the University of Washington are measuring the detailed adsorption and reaction energetics of small molecules and metal atoms adsorbed on well-characterized metal and semiconductor surfaces. Using a unique microcalorimetric approach, adsorption energies and bond strengths of metal-carbon and metal-oxygen bonds are determined. Adsorption and interaction of larger, more complex organic species are also examined. This accurate data is useful in developing an understanding of the reaction mechanisms relevant to heterogeneous catalysis, chemical vapor deposition processes, and adhesion at solid surfaces. The strength of a chemical bond between an adsorbed molecule and a solid surface is a crucial piece of information for developing an understanding of technologically important processes such as heterogeneous catalysis and electronic device manufacture. This information is very difficult to obtain in a direct way. Professor Campbell and coworkers at the University of Washington have developed a unique microcalorimetric approach to obtaining this information that has been applied to a wide range of important surface chemical systems. With the support of the Analytical and Surface Chemistry Program, these important measurements will continue and be extended to organic molecules interacting with metal and semiconductor surfaces.