Research Initiation Award: An Investigation of Admicellar Catalysis

研究启动奖：胶束催化研究

• 批准号: 9009246
• 负责人: Lance Lobban
• 金额: $ 7.45万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1993-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9009246&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Investigation; Admicellar

Admicellar catalysis, a novel technique to enhance reaction rates and selectivities. will be investigated. The hydrolysis of ethyl benzoate has been selected as a model reaction. The catalysis by a cationic surfactant adsorbed on porous silica will be studied over a range of surface coverages, support surface areas, and porosities, and solution pH and reactant concentrations. The objectives are (1) the quantitative evaluation of admicellar catalysis, and (2) the clarification of the morphology of the adsorbed surfactant aggregates. Admicellar catalysis is similar in many ways to micellar catalysis. Exploitation of micellar catalysis is discourage by the difficulty of product separation from the catalyst. The significant advantages of admicellar catalysis are expected to include (1) easy separation of the catalyst from the product, and (2) enhanced reaction rates and selectivities due to the particular characteristics of adsorbed surfactant aggregates. the results of this study may lead to new, efficient catalytic processes for production of pesticides, pharmaceuticals, and other highly specific reaction products, and to new processes for hazardous chemical detoxification. In addition, this study should provide new knowledge on absorbed surfactant aggregate structures. This information is of great practical importance to the fields of detergency, enhanced oil recovery, and numerous other areas.

一种新的促进反应的技术--胶束催化 率和选择性。将进行调查。 水解 苯甲酸乙酯的合成被选为模型反应。 的 多孔二氧化硅吸附阳离子表面活性剂的催化作用 将在一系列表面覆盖范围内进行研究，支持 表面积、孔隙率、溶液pH值和反应物 浓度的 目标是：（1）量化 评价胶束催化作用，和（2）澄清 吸附的表面活性剂聚集体的形态。 胶束催化在许多方面与胶束催化相似 催化作用 胶束催化的开发受到阻碍 由于产物与催化剂分离的困难。 胶束催化的显著优点是 预期包括（1）催化剂容易与 产物，和（2）提高的反应速率和选择性 由于吸附的表面活性剂的特殊特性 集料. 这项研究的结果可能会导致新的， 用于生产农药的有效催化方法， 药物和其他高度特异性的反应产物， 以及危险化学品解毒的新方法。 此外，这项研究还将提供有关 吸附的表面活性剂聚集体结构。 该信息 对去污领域具有重要的实际意义， 提高石油采收率和许多其他领域。