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 Campbell教授和他的同事们正在测量小分子和金属原子吸附在特征良好的金属和半导体表面上的详细吸附和反应能量学。采用独特的微量热法，确定了金属-碳键和金属-氧键的吸附能和键强度。更大，更复杂的有机物种的吸附和相互作用也进行了检查。这些准确的数据有助于了解与非均相催化、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化学键的强度对于理解诸如多相催化和电子器件制造等重要技术过程是至关重要的信息。这种信息很难以直接的方式获得。坎贝尔教授和华盛顿大学的同事们开发了一种独特的微量热法来获取这些信息，这种方法已广泛应用于重要的表面化学系统。在分析和表面化学项目的支持下，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.