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| QUANTIFYING PROCESS-BASED VARIABILITY AND UNCERTAINTIES IN OCEAN, LAND, AND ATMOSPHERE FORCING OF EXTRA-TROPICAL DROUGHTS AND HEAT WAVES IN GISS MODELE AND OBSERVATIONS | |
| 项目编号 | 80NSSC17K0265 |
| ALTON WILLIAMS | |
| 项目主持机构 | COLUMBIA UNIVERSITY |
| 开始日期 | 2017-07-20 |
| 结束日期 | 2021-07-19 |
| 英文摘要 | Non-technical Abstract: This project focuses on the development of fundamental science enabling fabrication of porous membranes for N2/CO2 separation with high selectivity and significant fluxes. High selectivity is achieved by inducing different molecular transport mechanisms for different components in a gas mixture. This research has a transformative impact because no microporous membranes have been demonstrated so far where selectivity is achieved by inducing different transport mechanisms for different components inside a membrane. The gas transport mechanisms on microscopic length scales will be monitored by a unique nuclear magnetic resonance (NMR) technique. The separation approach developed in this project can be easily adapted for other industrially important gas separations using the same membrane. Technical Abstract: The objective of this project is to develop structure-property relationships that will enable the fabrication of microporous membranes for N2/CO2 separation with high selectivity, which are achieved by selective induction of single-file diffusion to N2 molecules. The research effort is split between the following tasks: (1) fabrication of membrane supports with nanopore diameters below 5 nm and (2) characterization of the diffusion properties of gas mixtures in these membranes. Application of a unique diffusion NMR technique enables distinguishing between different diffusion mechanisms for different gas components inside the membrane on the microscopic length scales. Successful completion of the proposed research affords a transformative membrane-based technology to separate CO2 from combustion gas mixtures. The research plan is integrated with a recruitment program and supervised research for undergraduate students, especially students from the underrepresented groups, as well as mentoring and outreach. The students will be trained to use a unique diffusion NMR technique at the National High Magnetic Field Laboratory. |
| 学科分类 | 03 - 天文学;1107 - 航空航天工程;11 - 工程与技术 |
| 资助机构 | US-NASA |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/73473 |
| 推荐引用方式 GB/T 7714 | ALTON WILLIAMS.QUANTIFYING PROCESS-BASED VARIABILITY AND UNCERTAINTIES IN OCEAN, LAND, AND ATMOSPHERE FORCING OF EXTRA-TROPICAL DROUGHTS AND HEAT WAVES IN GISS MODELE AND OBSERVATIONS.2017. |
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