Collaborative Research: A New Class of Chemical Potential Driven Plug Flow Membrane Reactors for Combined Gas Separation and Direct Natural Gas Conversion

合作研究：用于组合气体分离和直接天然气转化的新型化学势驱动平推流膜反应器

• 批准号: 1924096
• 负责人: Xinfang Jin
• 金额: $ 12.99万
• 依托单位: University of Massachusetts Lowell
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1924096&HistoricalAwards=false
• 关键词: Collaborative; Research; New; Class; Chemical

The shale revolution has enabled large volume production of low-cost natural gas. The majority of this resource is still being burned for heat and power, releasing carbon dioxide into the atmosphere and further burdening carbon capture efforts. Meanwhile, directly converting natural gas into valuable chemicals has received significant interest from academia and industry due to the potential profit margin brought by low-cost natural gas. This research project aims to further fundamental scientific knowledge related to carbon dioxide capture, natural gas conversion mechanisms, and catalyst development using a new class of chemical-potential driven (electricity-free), ceramic-based, catalytic plug flow membrane reactors (PFMRs) as a platform. The gas separation and natural gas conversion are unified in a single reactor to be energy efficient and cost-effective. The importance and potential impact of the ongoing scientific advances in carbon dioxide capture and natural gas conversion technologies will be presented to the public during the annual "Edison Lecture Series" program at the University of South Carolina (USC). USC will team up with Benedict College to host a joint summer workshop on energy research topics to promote education and workforce development for students underrepresented in STEM fields. Undergraduate students at Benedict College in engineering majors will be engaged in these research topics by offering summer internships and academic-year part-time jobs, along with having access to USC's and University of Massachusetts at Lowell's (UML) existing undergraduate programs. Two new courses on the topics of gas separation / conversion and computational analysis for electrochemical systems will be independently developed and offered for graduate students at both USC and UML. This research project seeks to develop two specific types of PFMRs. The first is based on a triple carbonate-ion, oxide-ion and electron conductor, and within this reactor the catalytic oxidative coupling of methane will take place using the co-captured carbon dioxide / oxygen mixture to convert natural gas into ethylene in the presence of a suitable catalyst. The second type of PFMR is based on a triple oxide-ion, proton and electron conductor, and within this reactor the catalytic non-oxidative dehydrogenation of methane will be undertaken with the concurrent extraction of hydrogen to convert natural gas into ethylene. For both PFMRs, the influx of carbon dioxide and / or oxygen from the feed side helps significantly mitigate coke formation, thus prolonging the membrane / catalyst life. The fundamental components of the project include developing new membrane compositions and conversion-specific catalysts / supports through a combined experimental and theoretical approach. The fundamental mechanisms governing the methane oxidative and non-oxidative conversions and coke formation will be studied using an isotopic exchange technique and in situ Raman spectroscopy, and the design, testing and modeling of PFMRs via in-house catalytic reactors, multiphysics and system modeling will be performed.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.

页岩革命使低成本天然气的大量生产成为可能。 这种资源的大部分仍在燃烧以获得热量和电力，将二氧化碳释放到大气中，进一步加重了碳捕获工作的负担。与此同时，由于低成本天然气带来的潜在利润率，直接将天然气转化为有价值的化学品引起了学术界和工业界的极大兴趣。该研究项目旨在进一步了解与二氧化碳捕获，天然气转化机制和催化剂开发相关的基础科学知识，使用一类新的化学势驱动（无电），基于陶瓷的催化活塞流膜反应器（PFMR）作为平台。气体分离和天然气转化统一在一个反应器中，具有能源效率和成本效益。在南卡罗来纳州大学（USC）举行的年度“爱迪生系列讲座”计划期间，将向公众介绍二氧化碳捕获和天然气转化技术方面正在进行的科学进步的重要性和潜在影响。南加州大学将与本尼迪克特学院合作，举办一个关于能源研究主题的联合夏季研讨会，以促进在STEM领域代表性不足的学生的教育和劳动力发展。 本尼迪克特学院工程专业的本科生将通过提供暑期实习和学年兼职工作来从事这些研究课题，沿着的还有南加州大学和马萨诸塞州洛厄尔大学（UML）现有的本科课程。关于气体分离/转化和电化学系统计算分析的两个新课程将独立开发，并为南加州大学和UML的研究生提供。该研究项目旨在开发两种特定类型的PFMR。第一种是基于三重碳酸根离子、氧化物离子和电子导体，并且在该反应器内，甲烷的催化氧化偶联将使用共捕获的二氧化碳/氧气混合物在合适的催化剂存在下将天然气转化为乙烯而发生。第二种类型的PFMR是基于三重氧化物离子，质子和电子导体，并且在该反应器内，甲烷的催化非氧化脱氢将与同时提取氢气一起进行，以将天然气转化为乙烯。对于两种PFMR，来自进料侧的二氧化碳和/或氧气的流入有助于显著减轻焦炭形成，从而延长膜/催化剂寿命。该项目的基本组成部分包括通过实验和理论相结合的方法开发新的膜组合物和转化专用催化剂/载体。 将使用同位素交换技术和原位拉曼光谱以及通过内部催化反应器的PFMR的设计、测试和建模来研究控制甲烷氧化和非氧化转化以及焦炭形成的基本机制，该奖项反映了美国国家科学基金会的法定使命，并通过利用基金会的智力价值进行评估，被认为是值得支持的和更广泛的影响审查标准。

项目成果

Current Leakage and Faradaic Efficiency Simulation of Proton-Conducting Solid Oxide Electrolysis Cells

质子传导固体氧化物电解槽的电流泄漏和法拉第效率模拟

• DOI: 10.1149/11106.1159ecst
• 发表时间: 2023
• 期刊: ECS Transactions
• 作者: Jin, Xinfang;Shoukry, Yasser
• 通讯作者: Shoukry, Yasser