Transport Characteristics of Gases and Organic Solutes in Room Temperature Ionic Liquids

摘要提案题目：室温离子液体中气体和有机溶质的输运特性提案号：cts -0522589项目负责人：Ruth baltusu机构：Clarkson university本项目的目的是对室温离子液体中各种气体和有机溶质的输运特性进行基础研究。由于离子液体没有可测量的蒸汽压，这些材料正在被研究作为在许多反应和分离过程中传统挥发性有机溶剂的可能“绿色”替代品。目标将是结合从许多不同的实验测量中收集的信息，以发展对离子液体中控制传输的相互作用的基本理解。测量将包括通过支撑离子液体膜的溶质渗透率，目标溶质的溶解度以及不同溶解溶质浓度下离子液体的粘度和密度。测量将在一系列压力和温度下进行。负载离子液体膜将由多孔氧化铝膜制备，具有明确的孔几何形状。这些容易表征的膜将允许溶质扩散系数的计算结合从膜的渗透性测量的信息与测量的溶解度值。结果将被检查，以回答一些关于重要现象的基本问题，控制过程，将利用离子液体。核磁共振光谱的峰移检查应该有助于确定离子液体中与溶解溶质相互作用的组成基团。就更广泛的影响而言，拟议的工作将提供有关一类材料的属性信息，这些材料可能对设计无害环境的化学过程很重要。我们鼓励参与本项目的学生思考各种问题，这些问题将最终影响离子液体在化学过程和能源工业中的适用性。透过这个项目的经验，这些学生将会了解环保工程的重要性，以及思考废气排放问题的解决方案。该项目将为一类新型环保溶剂的工业应用提供有用的信息。

AbstractProposal Title: Transport Characteristics of Gases and Organic Solutes in Room Temperature Ionic LiquidsProposal Number: CTS-0522589Principal Investigator: Ruth BaltusInstitution: Clarkson UniversityThe objective of this project is to carry out a fundamental study of the transport characteristics of a variety of gases and organic solutes in room temperature ionic liquids. Because ionic liquids have no measurable vapor pressure, these materials are being studied as possible "green" replacements for conventional volatile organic solvents in many reaction and separation processes. The goal will be to combine information collected from a number of different experimental measurements to develop a fundamental understanding of the interactions governing transport in ionic liquids. Measurements will include solute permeability through supported ionic liquid membranes, solubility of target solutes and ionic liquid viscosity and density at different dissolved solute concentrations. Measurements will be conducted over a range of pressures and temperatures. Supported ionic liquids membranes will be prepared from porous alumina membranes with well-defined pore geometries. These easily characterized membranes will permit calculation of solute diffusion coefficients by combining information from the membrane permeability measurements with measured solubility values. Results will be examined to answer some fundamental questions about the important phenomena governing processes that will utilize ionic liquids. An examination of peak shifts in NMR spectra should help identify the constituent groups in the ionic liquid that interact with the dissolved solute. In terms of the broader impacts, the proposed work will provide property information about a class of materials that may be important in the design of environmentally benign chemical processes. Students who will work on this project will be encouraged to consider a variety of questions that will ultimately impact the applicability of ionic liquids in the chemical process and energy industries. Through their experience on this project, these students will develop an understanding of environmentally conscious engineering and the importance of thinking beyond end-of-pipe solutions to emissions problems. This project will provide information useful for the industrial application of a new class of environmentally friendly solvents.