Collaborative Research: Scalable Production of Metal-Organic Molecular Sieves with Optimized Gas Transport Properties

合作研究：具有优化气体传输性能的金属有机分子筛的规模化生产

• 批准号: 1561347
• 负责人: Sergey Vasenkov
• 金额: $ 13.3万
• 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: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1561347&HistoricalAwards=false
• 关键词: Collaborative; Research; Scalable; Production; Metal

Metal-organic molecular sieves are advanced sponge-like materials that possess internal cavities on the molecular scale and exhibit large total pore volume and surface area. The precisely defined pore sizes and surface openings in these molecular sponges only allow molecules of specific size, which is tunable, to be transported through them. It is these unique properties of metal-organic molecular sieves that find their uses in a wide range of applications including separations, catalysis, sensors, drug delivery, and sustainable energy technologies. Currently, these molecular sponges are made using precipitation from a solution. These methods are too expensive for wide commercial uses, primarily because they are not readily scalable. Here, the work aims to develop a new, large-scale production technology based on a scalable spray-drying technique to drastically reduce the fabrication costs and to improve transport properties of these materials. The spray-drying technique will allow controlling and optimizing the pore aperture sizes and pore architecture of nanoporous molecular sponges for such advanced applications. A novel measurement technique will be used to study microscale gas transport in these materials. These studies will be performed to guide the design of molecular sieves optimized with respect to their transport properties. The interdisciplinary nature of the project, spanning material design/synthesis in combination with the advanced transport studies, provide a rich research experience for high school, undergraduate and graduate students involved in the work.The main goal of the researched work is the development of an advanced scalable process for the designed construction of multi-functional/multi-structured nanoporous hybrid metal-organic framework materials and their composites exhibiting the desired transport properties. This goal will be achieved by completing the following three main objectives: 1) to develop aerosol-assisted (i.e., spray-drying) soft chemistry as a new paradigm for the large-scale synthesis of metal-organic frameworks by gaining a fundamental understanding of physico-chemical processes involved in aerosol-assisted soft chemistry, 2) to design and engineer MOF particles with unique microstructures and functionalities, and 3) to establish the relationship between structural and transport properties as well as the related catalytic performance of the resulting new materials through detailed studies of microscopic transport by a recently developed nuclear magnetic resonance technique. This fundamental research will lead to a set of design rules for the commercially-viable synthesis of multi-functional metal-organic framework materials and their composites with unique microstructures optimized for molecular transport and related catalytic performance.

金属有机分子筛是高级海绵状的材料，具有分子尺度的内部空腔，并显示出大孔隙体积和表面积。这些分子海绵中精确定义的孔径和表面开口只能使特定尺寸的分子（可调节）通过它们传输。正是这些金属有机分子筛的独特特性，在包括分离，催化，传感器，药物输送和可持续能量技术在内的广泛应用中找到了它们的用途。当前，这些分子海绵是使用溶液沉淀制成的。这些方法对于广泛的商业用途来说太昂贵了，主要是因为它们不易扩展。在这里，这项工作旨在基于可扩展的喷涂技术开发一种新的大规模生产技术，以大大降低制造成本并改善这些材料的运输特性。喷雾干燥技术将允许控制和优化纳米孔分子海绵的孔径大小和孔构建，以用于此类高级应用。一种新型的测量技术将用于研究这些材料中的微观气体传输。将进行这些研究，以指导针对其运输特性进行优化的分子筛的设计。该项目的跨学科性质，涵盖了材料设计/合成与高级运输研究，为参与工作的高中，本科和研究生提供丰富的研究经验。研究工作的主要目标是开发高级可扩展过程，用于设计多功能/多功能型Nanaportional nanoportional nanoportional nanoportional nanoportional nanopsircitional nanopsircient nanopsirtional nanopsirtional nanopsirtional nanoportional hybrid hybrid hyberienters tortient servories toperies torrienty构造材料和他们的构造材料和他们的展览会和他们的展览会和他们的表演。将通过完成以下三个主要目标来实现这一目标：1）开发辅助（即喷雾干燥）软化学，作为用于大规模合成金属有机框架的新范式，通过获得对涉及气体质量的柔软化学和工程的涉及的物理化学过程的基本理解，以获得对物理学的基本理解，以实现涉及的物理化学过程，以3）通过通过最近开发的核磁共振技术对显微镜运输的详细研究，建立结构和运输特性之间的关系以及所得新材料的相关催化性能。这项基本研究将为多功能金属有机框架材料及其复合材料及其复合材料提供一系列设计规则，并具有针对分子传输和相关催化性能的独特微结构而进行的复合材料。

项目成果

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