International Research Fellowship Program: Homogeneous Catalysis in Supercritical Fluids: Density Effects and Multiphase Processing

国际研究奖学金计划：超临界流体中的均相催化：密度效应和多相处理

• 批准号: 0202714
• 负责人: Aaron Scurto
• 金额: $ 4.32万
• 依托单位: Scurto Aaron M
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0202714&HistoricalAwards=false
• 关键词: International; Research; Fellowship; Program; Homogeneous

0202714ScurtoThe International Research Fellowship Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a twelve month research fellowship by Dr. Aaron M. Scurto to work with Dr. Walter Leitner at the Max Plank Institut fur Kohlenforschung in Germany.A goal of this project is to create technically feasible and economical replacement processes for traditional environmentally polluting solvent systems. The project will work to optimize the production of a certain ring-forming compound using homogeneous catalysis in supercritical fluids. A homogeneous catalyst is usually a chemically-active metal that has been bonded to organic molecules rendering it soluble in a supercritical fluid phase with the reactants. Its purpose is to accelerate the reaction and to selectively yield one product over other byproducts. A catalyst will be molecularly engineered to be both soluble in a supercritical fluid phase and selective for the compound. The sensitivity of the product formation to density will be investigated. It is believed that clustering of the reactants at lower pressures produces one product, while higher pressures produce a different species. Another approach will be to create a catalyst that is soluble in ionic liquids but not in supercritical CO2. Ionic liquids are salts that are liquid at room temperature and neither evaporates nor dissolves in supercritical fluids. Thus the catalyst promotes the reaction in the ionic liquid, and only the products and reactants are soluble in the supercritical fluid phase, not the ionic liquid or catalyst. This two-phase system will be used to develop a continuous process, which is highly desirable for industry.Dr. Leitner is one of the seminal researchers in the area of homogeneous catalysis in supercritical fluids.

0202714 Scurto国际研究奖学金计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。 该计划的奖项提供了联合研究的机会，以及使用独特或互补的设施，专业知识和国外的实验条件。Scurto与德国Max Plank Institut fur Kohlenforschung的Walter Leitner博士合作。该项目的目标是为传统的环境污染溶剂系统创建技术上可行且经济的替代工艺。 该项目将致力于利用超临界流体中的均相催化来优化某种成环化合物的生产。 均相催化剂通常是一种化学活性金属，它与有机分子键合，使其可溶于反应物的超临界流体相中。 其目的是加速反应，并选择性地产生一种产物而不是其他副产物。 催化剂将被分子工程化以既可溶于超临界流体相又对化合物具有选择性。 将研究产物形成对密度的敏感性。 据信，在较低压力下反应物的聚集产生一种产物，而较高压力产生不同的物质。 另一种方法将是产生可溶于离子液体但不溶于超临界CO2的催化剂。 离子液体是在室温下为液体并且在超临界流体中既不蒸发也不溶解的盐。 因此，催化剂促进离子液体中的反应，并且只有产物和反应物可溶于超临界流体相中，而不是离子液体或催化剂。 这种两相系统将被用于开发一种工业上非常需要的连续过程。Leitner博士是超临界流体中均相催化领域的开创性研究人员之一。