EAPSI:Purification of Hydrogen-Nitrogen Binary Gas Mixtures for Effective Use of Ammonia as a Hydrogen Storage Material

EAPSI：氢氮二元气体混合物的纯化以有效利用氨作为储氢材料

• 批准号: 1513464
• 负责人: Sean-Thomas Lundin
• 金额: $ 0.51万
• 依托单位: Lundin Sean-Thomas B
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1513464&HistoricalAwards=false
• 关键词: EAPSI; Purification; Hydrogen; Nitrogen; Binary

This award supports research that will contribute to the ongoing effort to develop alternative energy methods toward a renewable energy future. An ammonia synthesis and decomposition energy framework is one possibility for a carbon free fuel network in which all carbon-based greenhouse gases are eliminated from the process. The ideal future process would involve ammonia synthesis from water via electrolysis, transport to an end-user and then conversion into hydrogen to be used efficiently in fuel cells. Finding an efficient means of decomposing ammonia into hydrogen remains an underdeveloped region of this process and the proposed work will provide a much better understanding of using palladium membranes to this end. The research involves the purification of hydrogen from streams containing nitrogen using palladium membranes. Specifically, the inhibition of hydrogen transport by adsorbed nitrogen species, which correlates to a reduction in hydrogen productivity, will be investigated. The membranes will be fabricated at the Colorado School of Mines and then tested and characterized at the University of Tokyo under the advisement of Professor Shigeo Ted Oyama, who has knowledge and expertise using a specific analysis method known as the time-lag technique. A method of minimizing nitrogen adsorption on Palladium membranes to improve membrane performance through the use of either palladium-silver or palladium-gold alloys will be studied, based on results from a recent theoretical study by Chantaramolee et al. Testing of membranes will involve exposure to hydrogen, nitrogen, and argon gases with measurements of hydrogen permeance being used to characterize the flux inhibition caused by adsorbed nitrogen species. Characterization of the membranes will involve techniques such as FTIR, XPS, and the time-lag technique which Prof. Oyama's lab has used previously. Success will be determined by the ability to characterize the temperature and pressure dependence of the flux inhibition, as well as isolating which surface species (N, NH, NH2 and/or NH3) are most stable on the surface of the membranes. This NSF EAPSI award is funded in collaboration with the Japan Society for the Promotion of Science.

该奖项支持的研究，将有助于正在进行的努力，开发替代能源的方法走向可再生能源的未来。氨合成和分解能源框架是无碳燃料网络的一种可能性，其中所有碳基温室气体都从该过程中消除。理想的未来工艺将包括通过电解从水中合成氨，运输到最终用户，然后转化为氢以在燃料电池中有效利用。找到一种将氨分解成氢的有效方法仍然是该过程的一个不发达区域，并且所提出的工作将提供对为此目的使用钯膜的更好理解。该研究涉及使用钯膜从含氮气流中纯化氢气。具体而言，将研究吸附的氮物质对氢运输的抑制，这与氢生产率的降低相关。膜将在科罗拉多矿业学院制造，然后在东京大学进行测试和表征，由Shigeo Ted Oyama教授负责，他拥有使用称为时滞技术的特定分析方法的知识和专业知识。根据Chantaramolee等人最近的理论研究结果，将研究一种通过使用钯-银或钯-金合金来最大限度地减少钯膜上的氮吸附以提高膜性能的方法。膜测试将涉及暴露于氢气、氮气和氩气中，并使用氢渗透率测量来表征吸附的氮物质引起的通量抑制。膜的表征将涉及FTIR、XPS和Oyama教授实验室以前使用的时滞技术等技术。成功将取决于表征通量抑制的温度和压力依赖性的能力，以及分离哪些表面物质（N、NH、NH 2和/或NH3）在膜表面上最稳定。这个NSF EAPSI奖是与日本科学促进协会合作资助的。