Bimetallic Cooperativity in Catalysis

催化中的双金属协同作用

• 批准号: 9201051
• 负责人: George Stanley
• 金额: $ 50.8万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1997-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9201051&HistoricalAwards=false
• 关键词: Bimetallic; Cooperativity; Catalysis

This award in the Inorganic, Bioinorganic, and Organometallic Program provides continued support for research on catalysis by Dr. George G. Stanley of the Chemistry Department, Louisiana State University at Baton Rouge. Bimetallic rhodium complexes of binucleating linear tetra(tertiaryphosphine) ligands have been prepared and used as selective catalysts for hydroformylation reactions. The catalysts become inactive if the rhodium centers are separated by long ligand chains, suggesting that bimetallic cooperativity is an important factor in their activity. Stanley will study the mechanism and kinetics of this reaction in order to understand the exact nature of the bimetallic cooperativity step. In addition, the effectiveness of complexes containing other metals and mixed metals will be tested and the suitability of the system for asymmetric catalytic reactions will be explored. &&Hydroformylation is the chemical process of converting alkenes into aldehydes, using hydrogen gas and carbon monoxide as the other reactants. The process is widely used commercially to produce aldehydes as well as alcohols. Stanley will study the reactions of new catalyts for this reaction with the goals of understanding the details of the reaction mechanism and of testing catalysts which can favor the production of specific products.

该无机、生物无机和有机金属项目奖项为路易斯安那州立大学巴吞鲁日分校化学系的 George G. Stanley 博士的催化研究提供持续支持。 双核线性四（叔膦）配体的双金属铑配合物已被制备并用作加氢甲酰化反应的选择性催化剂。 如果铑中心被长配体链分开，催化剂就会变得不活跃，这表明双金属协同性是其活性的重要因素。 斯坦利将研究该反应的机理和动力学，以了解双金属协同步骤的确切性质。 此外，还将测试含有其他金属和混合金属的配合物的有效性，并探索该系统对不对称催化反应的适用性。 &&加氢甲酰化是使用氢气和一氧化碳作为其他反应物将烯烃转化为醛的化学过程。 该工艺在商业上广泛用于生产醛和醇。 斯坦利将研究该反应的新催化剂的反应，目的是了解反应机理的细节并测试有利于特定产品生产的催化剂。