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

室温离子液体中气体和有机溶质的输运特性

• 批准号: 0522589
• 负责人: Ruth Baltus
• 金额: --
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0522589&HistoricalAwards=false
• 关键词: Transport; Characteristics; Gases; Organic; Solutes

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.

建议题目：室温离子液体中气体和有机溶质的输运特性建议编号：CTS-0522589主要研究人员：Ruth Baltus研究所：克拉克森大学本项目的目的是对各种气体和有机溶质在室温离子液体中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，在许多反应和分离过程中，这些材料被研究为可能替代传统挥发性有机溶剂的“绿色”替代品。目标将是结合从一些不同的实验测量中收集的信息，以发展对支配离子液体中传输的相互作用的基本理解。测量将包括溶质通过支撑离子液膜的渗透性、目标溶质的溶解度以及不同溶解溶质浓度下的离子液体粘度和密度。测量将在一定的压力和温度范围内进行。支撑离子液体膜将从具有明确孔几何结构的多孔氧化铝膜制备。这些易于表征的膜将允许通过将膜渗透性测量的信息与测量的溶解度值相结合来计算溶质扩散系数。研究结果将被用来回答一些基本的问题，这些问题涉及管理使用离子液体的过程的重要现象。检查核磁共振波谱的峰位移应有助于确定离子液体中与溶解的溶质相互作用的组成基团。就更广泛的影响而言，拟议的工作将提供一类材料的性质信息，这些材料可能对环境无害的化学过程的设计很重要。将致力于这一项目的学生将被鼓励考虑各种问题，这些问题最终将影响离子液体在化工过程和能源行业中的适用性。通过他们在这个项目上的经验，这些学生将加深对环保工程的理解，以及超越管道末端解决排放问题解决方案的重要性。该项目将为新型环境友好型溶剂的工业应用提供有用的信息。