Collaborative Research: Enabling rational design of MOF-polymer mixed matrix membranes for liquid separations through understanding of microscale and macroscale properties

合作研究：通过了解微观和宏观特性，实现用于液体分离的 MOF-聚合物混合基质膜的合理设计

• 批准号: 1836735
• 负责人: Sergey Vasenkov
• 金额: $ 18.5万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1836735&HistoricalAwards=false
• 关键词: Collaborative; Research; Enabling; rational; design

Gasoline, plastics, laundry detergent, many pharmaceuticals, and cosmetics are all derived from organic liquids. Organic liquids are essentially the liquid fraction of crude oil. The molecules in crude oil are a complex mixture, that must first be separated before they can be converted to useful consumer products. Today, separation of the mixture requires the organic liquids be boiled and distilled. Boiling the liquid requires a large energy input, the cost of which is ultimately passed on to the consumer. Given the vast consumption of consumer products derived from organic liquids, this separation utilizes a sizable fraction (about 10%) of the nation's total energy consumption. The development of alternative, low-cost and low-energy separations of organic liquids will allow the nation to continue, or improve upon, its standard of living while reducing energy consumption. To achieve this goal, there is growing interest in using solid mass separating agents to separate organic liquids, rather than distilling the mixture. One such example of a mass separating agent is a membrane, which acts as a sieve to separate the components of the mixture. Unlike a macroscopic sieve, a membrane contains nanometer-sized pores with specific chemical functionalities. Molecules pass through the pores and interact with the chemical functionalities in different manners, leading to a separation of different types of molecules. To separate organic liquids, which can dissolve many materials, the membrane must be chemically robust. This research project will couple traditional and advanced characterization techniques to track the movement of the organic molecules through membranes, in order to advance the rational design of mass separating agents that separate organic liquids. This research project will seek to understand changes of the transport, structural, and sorption properties of organic liquids in polymers, metal-organic frameworks (MOFs), and mixed-matrix membranes consisting of both of these components. Diffusion will be determined using both traditional transport measurements of molecular flux, as well as pulsed field gradient nuclear magnetic resonance spectroscopy. To evaluate diffusion with sub-micrometer spatial resolution, high magnetic field gradients and a high static magnetic field will be used. An analytical model will be developed to link microscopic and macroscopic diffusivities, transport properties, sorption, and structural properties. The goal of this model will be to develop design principles for MOF-based mixed-matrix membranes for organic liquid separations. Educational and outreach aspects of the work will leverage existing programs, introduce animations and educational demonstrations, and offer students participation in well-defined engineering projects related to membrane separations.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

汽油，塑料，洗衣粉，许多药物和化妆品均来自有机液体。有机液体本质上是原油的液体分数。原油中的分子是一种复杂的混合物，必须首先将其转换为有用的消费产品。如今，混合物的分离需要煮沸并蒸馏出有机液体。煮沸液体需要大量的能量输入，其成本最终将其传递给消费者。鉴于源自有机液体的消费产品的大量消费量，这种分离利用了该国总能源消耗的相当一部分（约10％）。有机液体的替代，低成本和低能分离的发展将使国家在减少能源消耗的同时继续或改善其生活水平。为了实现这一目标，人们对使用固体质量分离剂将有机液体分离而不是蒸馏混合物越来越感兴趣。质量分离剂的一个例子是膜，它充当筛子以分离混合物的成分。与宏观筛子不同，膜包含具有特定化学功能的纳米尺寸孔。分子穿过孔，并以不同的方式与化学功能相互作用，从而导致不同类型的分子分离。要分离可以溶解许多材料的有机液体，膜必须化学坚固。该研究项目将对传统和先进的特征技术进行介绍，以跟踪有机分子通过膜的运动，以推动分离有机液体分开的质量分离剂的合理设计。该研究项目将旨在了解聚合物，金属有机框架（MOF）和混合矩阵膜中有机液体的运输，结构和吸附性能的变化，这些膜由这两种组成部分组成。扩散将使用分子通量的传统转运测量以及脉冲场梯度核磁共振光谱法确定。为了评估亚微米的空间分辨率的扩散，将使用高磁场梯度和高静态磁场。将开发一个分析模型，以将显微镜和宏观扩散性，传输特性，吸附和结构特性联系起来。该模型的目的是为有机液体分离的基于MOF的混合矩阵膜制定设计原理。这项工作的教育和宣传方面将利用现有计划，介绍动画和教育演示，并为学生参与与膜分离有关的明确定义的工程项目。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来支持的。

项目成果

Self-diffusion of mixed xylene isomers in ZIF-71 crystals dispersed in a polymer to form a hybrid membrane

• DOI: 10.1016/j.micromeso.2022.111960
• 发表时间: 2022-05
• 期刊: Microporous and Mesoporous Materials
• 影响因子: 5.2
• 作者: Amineh Baniani;Matthew P. Rivera;Ryan P. Lively;S. Vasenkov

Potentials and challenges of high-field PFG NMR diffusion studies with sorbates in nanoporous media

• DOI: 10.1007/s10450-020-00255-y
• 发表时间: 2020-08
• 期刊: Adsorption
• 作者: Amineh Baniani;Samuel Berens;Matthew P. Rivera;Ryan P. Lively;S. Vasenkov

Influence of polymer modification on intra-MOF self-diffusion in MOF-based mixed matrix membranes

聚合物改性对 MOF 基混合基质膜内 MOF 自扩散的影响

• DOI: 10.1016/j.micromeso.2023.112648
• 发表时间: 2023
• 期刊: Microporous and Mesoporous Materials
• 影响因子: 5.2
• 作者: Baniani, Amineh;Rivera, Matthew P.;Marreiros, João;Lively, Ryan P.;Vasenkov, Sergey
• 通讯作者: Vasenkov, Sergey

Quantifying diffusion of organic liquids in a MOF component of MOF/Polymer mixed-matrix membranes by high field NMR

• DOI: 10.1016/j.memsci.2021.119786
• 发表时间: 2021-09
• 期刊: Journal of Membrane Science
• 影响因子: 9.5
• 作者: Amineh Baniani;Matthew P. Rivera;Ryan P. Lively;S. Vasenkov