CAREER: Adsorption, Transport and Catalysis of Organic Compounds in Water-Saturated Microporous Materials

CTS-9624724亚利桑那州詹姆斯法雷尔大学摘要该项目研究饱和水的微孔材料中的吸附和传输现象。将使用模型固体和含水层沉积物来研究控制含水层沉积物中疏水污染物释放的机制。这项研究将集中于探索疏水溶质在分子尺寸的先前充满水的孔隙中进行毛细管相分离(CPS)的可能性。溶质填充的微孔对吸附/脱附滞后和抗脱附组分都有贡献。合成沸石将被用作模型吸附剂，以确定表面类型、孔径大小、溶质疏水性和溶质浓度的影响。计划进行程序升温脱附实验和核磁共振测量。这项研究可能会改进催化分解制造过程中的化学污染物以及从水蒸气和高湿度蒸汽中回收有机化合物的技术。该教育计划包括化学和环境工程专业的学生。它侧重于案例研究、相关软件包的使用和本科生的研究经验。

CTS - 9624724 James Farrell University of Arizona ABSTRACT The project deals with adsorption and transport phenomena in water-saturated microporous materials. The mechanisms controlling the release of hydrophobic contaminants from aquifer sediments will be investigated using both model solids and acquifer sediments. The research will focus on exploring the potential for capillary phase separation (CPS) of a hydrophobic solute within previously water-filled pores of molecular dimensions. The solute-filled micropores may contribute to both adsorption/desorption hysteresis and the desorption resistant fraction. Synthetic zeolites will be used as model sorbents to determine the effects of surface type, pore size, solute hydrophobicity and solute concentration. Temperature programmed desorption experiments and NMR measurements are planned. The research may lead to improved techniques for catalytic destruction of chemical pollutants from manufacturing processes and recovery of organic compounds from aqueous and high humidity vapor streams. The educational plan includes both chemical and environmental engineering students. It focuses on the use of case studies, relevant software packages and research experience for undergraduates.