SBIR Phase I: Advanced Catalysts with Tethered Ligand-Metal Complexes

SBIR 第一阶段：具有束缚配体-金属配合物的先进催化剂

• 批准号: 9961206
• 负责人: Richard Hammen
• 金额: $ 10万
• 依托单位: ChelaTech, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9961206&HistoricalAwards=false
• 关键词: SBIR; Phase; Advanced; Catalysts; Tethered

This Small Business Innovation Research Phase I program will develop advanced heterogeneous catalyst support materials that will reduce costs and enhance productivity in the chemical process industries. Existing heterogeneous catalysts are limited by slow diffusion of reactants and products in the interfacial boundary region where chemical reactions occur. The objective of this work is to develop heterogeneous catalysts that have the combined benefits of homogeneous and heterogeneous catalysts. Solid support materials with long tether molecules terminated with metal-ligand complexes will be prepared. The tether removes the reactive complex from the surface of the support and 'dangles' it into the solution phase, where rapid chemical transformations occur. These non-diffusion-limited catalysts constitute a fundamental physical chemistry change in the nature of solid-liquid interfaces and are an enabling technology innovation for both improved products and processes. Tethered phosphine-palladium catalysts will be prepared and tested for their performance in the olefination reaction of an aromatic halide. The catalysts will be tested for their reaction kinetics, turnover number, and durability for regeneration and reuse. The results of this project will provide technology for a new generation of enhanced efficiency catalysts for the chemical process industry that are significantly more cost effective that those based on diffusion-limited technologies.

该小型企业创新研究第一阶段计划将开发先进的非均相催化剂载体材料，以降低成本并提高化学加工行业的生产率。现有的多相催化剂受到反应物和产物在发生化学反应的界面边界区域中的缓慢扩散的限制。 这项工作的目的是开发具有均相和多相催化剂的综合效益的多相催化剂。 将制备具有以金属-配体络合物封端的长系链分子的固体载体材料。 系链将反应性复合物从载体表面移除并将其“悬挂”到溶液相中，在溶液相中发生快速的化学转化。 这些非扩散限制型催化剂构成了固液界面性质的基本物理化学变化，是改进产品和工艺的技术创新。将制备栓系膦-钯催化剂并测试它们在芳族卤化物的烯烃化反应中的性能。 将测试催化剂的反应动力学、周转次数以及再生和再利用的耐久性。 该项目的成果将为化学加工行业提供新一代高效催化剂技术，这些催化剂比基于扩散限制技术的催化剂具有更高的成本效益。