Collaborative Research: Rational Design of Ionene + Ionic Liquid Membranes Based on Understanding Gas Transport on Different Length Scales

合作研究:基于不同长度尺度气体传输的紫罗烯离子液体膜的合理设计

基本信息

  • 批准号:
    2312000
  • 负责人:
  • 金额:
    $ 34.83万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2023
  • 资助国家:
    美国
  • 起止时间:
    2023-07-01 至 2026-06-30
  • 项目状态:
    未结题

项目摘要

Membranes offer improved energy and operational efficiency compared to traditional chemical separation processes such as distillation and absorption. However, membrane technology is less mature than distillation and absorption technologies. Developing new membrane materials to make membrane-based separations competitive with these traditional technologies remains a significant need. Chemical separations are of vital importance as they underpin the production of energy and materials that allow the modern world to function. Improvements to separation processes are key to reducing energy consumption, costs of products and services, and greenhouse gas (GHG) emissions. This project will utilize synthetic chemistry, polymer science, and state-of-the-art transport measurement and spectroscopic techniques to develop new fundamental knowledge of membrane structures and performance, which can lead to breakthroughs in membrane performance. The lessons learned through the membrane design process and the development of structure-transport relationships for these membranes can also be translated to other applications, such as utilizing plastic wastes to obtain key starting materials in the generation of new high-performance polymer materials with unique properties that can be 3D printed. This project creates opportunities for training undergraduate and graduate students in a variety of synthetic and characterization techniques and leverages existing programs established by the investigators to facilitate undergraduate student participation.Gas diffusion plays a key role in the separation performance of polymer membranes. Yet, quantification and fundamental understanding of gas diffusion on microscopic, viz. sub-micrometer and micrometer, length scales comparable with sizes of structural inhomogeneities (domains) have not been demonstrated for ionenes. This project will address this knowledge gap, allowing for rational polymer membrane design based on a detailed understanding of microscopic diffusion and its relationship with the macroscopic transport through an entire membrane as well as membrane structural properties. The key objective of the synergistic experimental research plan is to develop a fundamental understanding of gas transport in a new type of polymer named “doubly segmented ionenes” (DS ionenes). The study of DS ionenes will create a new paradigm for the design of polymers for gas separation membranes and generate a significant body of knowledge that will also be of broad interest to the separation science and polymer science communities. The systematic variation of DS ionene structures will provide deep knowledge of how the composition, length, and volume fraction of major membrane constituents influence gas permeability and diffusion on all relevant length scales. The overall goal is to develop an understanding of the structure-transport relationship that allows for tailoring membrane composition to maximize performance for any target gas separation application. Carbon dioxide (CO2), methane (CH4), and carbon monoxide (CO) gases will be examined in microscopic diffusion NMR experiments. Additional gases related to energy production and consumption, including nitrogen, oxygen, and hydrogen, will be considered in the macroscopic membrane experiments. The success of this project will translate into major intellectual advancements in the ability to build high-permeability and high-selectivity polymer membranes for gas separations, which will be required to meet the energy challenges of the 21st Century.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.
与蒸馏和吸收等传统化学分离工艺相比,膜提供了更高的能量和操作效率。然而,膜技术不如蒸馏和吸收技术成熟。开发新的膜材料以使基于膜的分离与这些传统技术竞争仍然是一个重要的需求。化学分离至关重要,因为它们支撑着现代世界运转所需的能源和材料的生产。分离工艺的改进是降低能耗、产品和服务成本以及温室气体(GHG)排放的关键。该项目将利用合成化学,聚合物科学和最先进的传输测量和光谱技术来开发膜结构和性能的新基础知识,这可能导致膜性能的突破。通过膜设计过程和这些膜的结构-传输关系的发展所吸取的经验教训也可以转化为其他应用,例如利用塑料废物获得关键的起始材料,以产生具有独特性能的新型高性能聚合物材料,可以3D打印。该项目为培训本科生和研究生提供了各种合成和表征技术的机会,并利用研究人员建立的现有项目促进本科生的参与。气体扩散在聚合物膜的分离性能中起着关键作用。然而,量化和基本的理解气体扩散的微观,即亚微米和微米,长度尺度可比的结构不均匀性(域)的大小尚未证明紫罗烯。该项目将解决这一知识差距,允许合理的聚合物膜设计的基础上详细了解微观扩散及其与宏观运输通过整个膜以及膜结构特性的关系。协同实验研究计划的主要目标是发展一种新型聚合物称为“双链段紫罗烯”(DS紫罗烯)的气体传输的基本理解。DS紫罗烯的研究将为气体分离膜聚合物的设计创造一个新的范例,并产生大量的知识,这些知识也将引起分离科学和聚合物科学界的广泛兴趣。DS紫罗烯结构的系统性变化将提供关于主要膜成分的组成、长度和体积分数如何在所有相关长度尺度上影响气体渗透性和扩散的深入知识。总的目标是发展的结构-传输关系的理解,允许定制膜组合物,以最大限度地提高任何目标气体分离应用的性能。二氧化碳(CO2),甲烷(CH 4)和一氧化碳(CO)气体将在微观扩散NMR实验中进行检查。在宏观膜实验中将考虑与能量产生和消耗相关的其他气体,包括氮气、氧气和氢气。该项目的成功将转化为构建用于气体分离的高渗透性和高选择性聚合物膜的能力方面的重大知识进步,这将是满足21世纪能源挑战所必需的。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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Jason Bara其他文献

Virtual Special Issue on Chemical Engineering under Extreme Conditions
极端条件下化学工程虚拟特刊

Jason Bara的其他文献

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{{ truncateString('Jason Bara', 18)}}的其他基金

EFRI E3P: CAS: Transformative Upcycling of Polymers by Activating Chemistries
EFRI E3P:CAS:通过活化化学物质实现聚合物的转型升级循环
  • 批准号:
    2132133
  • 财政年份:
    2021
  • 资助金额:
    $ 34.83万
  • 项目类别:
    Standard Grant
IRES Track 1: Innovative Macromolecular & Polymer Research Experience in San Sebastian (IMPRESS)
IRES Track 1:创新高分子
  • 批准号:
    2107325
  • 财政年份:
    2021
  • 资助金额:
    $ 34.83万
  • 项目类别:
    Standard Grant
REU Site: Interdisciplinary Application of Advanced Polymers for Engineering Innovations
REU 网站:先进聚合物在工程创新中的跨学科应用
  • 批准号:
    1851974
  • 财政年份:
    2019
  • 资助金额:
    $ 34.83万
  • 项目类别:
    Standard Grant
Ionic Polyimides: Design, Synthesis, Characterization and Modeling of a Versatile Material Platform for Membrane Separations
离子聚酰亚胺:用于膜分离的多功能材料平台的设计、合成、表征和建模
  • 批准号:
    1605411
  • 财政年份:
    2016
  • 资助金额:
    $ 34.83万
  • 项目类别:
    Standard Grant
Experimental & Computational Design of High-Performance Polymer Membranes for CO2 Capture
实验性的
  • 批准号:
    1159397
  • 财政年份:
    2012
  • 资助金额:
    $ 34.83万
  • 项目类别:
    Standard Grant

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