An Investigation of Near-Critical Effects and Adsorption Phenomena in Supercritical Fluid Technology

超临界流体技术中近临界效应和吸附现象的研究

• 批准号: 9213276
• 负责人: Eldred Chimowitz
• 金额: $ 31.89万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-15 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9213276&HistoricalAwards=false
• 关键词: Investigation; Near; Critical; Effects; Adsorption

This research studies theoretically and experimentally adsorption of solute from near critical fluids onto stationary phases. Theoretically, statistical mechanical integral equations will be used to describe the equilibrium thermodynamics of solute partitioning, and this will lead to equations for partial molar enthalpies, volumes and ultimately partition coefficients. Experimentally, a chromatographic technique will be used to acquire adsorption data. Both lines of research will focus in particular on how the adsorption of solute changes when the solvent is a mixture of two supercritical fluids in their near critical region. For this case, the proposed research will study the possibility that by varying the solvent composition the behavior of the solute towards the solvent can be modulated from attractive to repulsive.

本研究从理论和实验两方面进行了研究 近临界流体中溶质在固定相上的吸附 阶段。 理论上，统计力学积分 方程将被用来描述平衡 溶质分配的热力学，这将导致 偏摩尔体积、体积和最终 分配系数 在实验上，一种色谱 技术将用于获取吸附数据。 两条线 的研究将特别集中在如何吸附的 当溶剂是两种物质的混合物时， 超临界流体在其近临界区域。 为此 在这种情况下，拟议的研究将研究通过 改变溶剂组成， 可以从有吸引力的调节到 令人厌恶