Microcalorimetric Studies of Supported Platinum Catalysts for Light Paraffin Conversion Reactions

吸附微量热法是用来研究表面 负载铂和铂/锡热力学 催化剂的反应的重要性，重新制定 汽油，特别是脱氢和异构化 轻质石蜡。 选择探针分子来研究 吸附物表面的化学键性质 与感兴趣的催化反应相关。 的 与之相关的能量和熵的变化 这些探针分子与表面的相互作用 测定了 表面热力学数据与 来自稳态研究的反应动力学数据，同位素 示踪和程序升温脱附来探索 表面热力学与表面 动力学 表面热力学与 催化剂的结构也进行了研究。 该项目是对数据库的重大贡献， 表面热力学 它还提供了一个很好的测试， 这些数据在催化剂设计中的实用性。 测试系统 就业有直接影响，在满足新的 根据《清洁空气法》。

Adsorption microcalorimetry is used to study the surface thermodynamics of supported platinum and platinum/tin catalysts for reactions of importance to the reformulation of gasoline, specifically dehydrogenation and isomerization of light paraffins. Probe molecules are selected to study the chemical bonding properties of the surface for adsorbates relevant to the catalytic reactions of interest. The enthalpic and entropic changes associated with the interactions of these probe molecules with surfaces are measured. The surface thermodynamic data are compared with reaction kinetic data from steady-state studies, isotopic tracing, and temperature-programed desorption to explore correlations between surface thermodynamics and surface kinetics. Relationships between surface thermodynamics and catalyst structure are also examined. This project is a major contribution to the data base on surface thermodynamics. It also provides a good test of the utility of such data in catalyst design. The test system employed has immediate implications in meeting the new standards under the Clean Air Act.