Collaborative Research: Development and Fundamental Studies of N2-absorbing, Iron-phosphine-containing Polymers for Pressure Swing Purification of Natural Gas

合作研究：用于天然气变压净化的吸氮含铁膦聚合物的开发和基础研究

• 批准号: 1503550
• 负责人: David Tyler
• 金额: $ 21.6万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1503550&HistoricalAwards=false
• 关键词: Collaborative; Research; Development; Fundamental; Studies

Natural gas is an important source of energy in the United States. However, some of the U.S. natural gas reserves are contaminated with nitrogen gas to the extent that it is necessary to remove the contaminant before it is used. Under the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Dr. Gohdes at Pacific University and Dr. Tyler at the University of Oregon combine molecular chemistry synergistically with polymer science to design and synthesize novel metal-templated polymers (MTPs) that will be useful as long-lived absorbents for the purification of natural gas. The fundamental knowledge gained from this project has broader scientific implications in other important areas such as catalysis and sensor design. Undergraduate and graduate students working on this project receive training in experimental design and a broad array of synthetic and analytical techniques. This project prepares students to become future leaders of innovation in STEM. This project also has extensive impact in the training of STEM educators through exciting vehicles such as a summer workshop on Informal Science Education (ISE) where students interested in science education learn techniques for effectively communicating with the public in venues such as science museums. Prior work in the Tyler lab at the UO showed that water-soluble trans-Fe(P2)2(X)(Cl)-type complexes (X = Cl, H; P2 = a water-soluble bidentate phosphine) can successfully bind nitrogen gas reversibly under conditions suitable for a pressure-swing separation process. In this project, Dr. Gohdes and Dr. Tyler aim to enhance the stability of the nitrogen binding Fe(II) complexes by encapsulating them in a polymer matrix, forming MTPs around the nitrogen binding motif. Another approach to enhance stability of the nitrogen binding complexes is by replacing the bidentate phosphines with macrocyclic, tetradentate phosphines. These groups collaboratively perform research to study the thermodynamics and kinetics of the nitrogen-binding reactions of the iron complexes and MTPs. A fundamental understanding of how the properties of the polymer affect the intrinsic reactivity of the metal center is important for the design and optimization of the next generation nitrogen-absorbing materials.

天然气是美国的重要能源。但是，某些美国天然气储量被氮气污染，以至于有必要在使用污染物之前去除污染物。在化学司的大分子，超分子和纳米化学计划的支持下，太平洋大学的Gohdes博士和俄勒冈大学的泰勒博士结合了分子化学与聚合物科学在设计和合成的新型金属 - 拟合聚合物（MTPS）上的纯化效果，可用于自然效果。从该项目中获得的基本知识在其他重要领域（例如催化和传感器设计）具有更广泛的科学意义。从事该项目的本科生和研究生接受实验设计的培训以及广泛的合成和分析技术。该项目使学生成为STEM创新的未来领导者。该项目还通过令人兴奋的车辆（例如非正式科学教育）（ISE）等令人兴奋的车辆对STEM教育者的培训产生了广泛的影响，在该车间中，对科学教育感兴趣的学生学习技术，可以在科学博物馆等场所与公众进行有效沟通。在UO的泰勒实验室的先前工作表明，水溶性的反式FE（P2）2（X）（Cl）型配合物（X = Cl，H; P2 = A水溶性双齿磷酸）可以成功地结合氮气在适用于适用于压力缠绕分离过程的条件下可逆地结合氮气。在这个项目中，Gohdes博士和Tyler博士旨在通过将它们封装在聚合物基质中，从而增强氮结合Fe（II）配合物的稳定性，从而在氮结合基序周围形成MTP。提高氮结合复合物稳定性的另一种方法是用大环磷替换二齿磷。这些小组进行了研究，研究了铁配合物和MTP的氮结合反应的热力学和动力学。对聚合物的性质如何影响金属中心的内在反应性的基本理解对于下一代氮气吸收材料的设计和优化很重要。