Research Initiation Award: An Investigation of Admicellar Catalysis

胶束催化，一种提高反应速率和选择性的新技术。将被调查。选择苯甲酸乙酯的水解反应作为模型反应。阳离子表面活性剂吸附在多孔二氧化硅上的催化作用将在一系列表面覆盖、支撑表面积、孔隙率、溶液pH和反应物浓度上进行研究。目的是(1)定量评价胶束催化作用，(2)澄清吸附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。胶束催化的开发由于产物难以从催化剂中分离而受到阻碍。胶束催化的显著优点包括：(1)催化剂易于从产物中分离；(2)由于吸附表面活性剂聚集体的特殊特性，提高了反应速率和选择性。这项研究的结果可能会导致新的，高效的催化过程，用于生产农药，药品和其他高特异性反应产物，以及危险化学品解毒的新过程。此外，该研究还为吸附表面活性剂的聚集体结构提供了新的认识。这些信息对清洁、提高采收率和许多其他领域具有重要的实际意义。

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.