| 项目编号: | 1606062
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| 项目名称: | INFEWS N/P/H2O: Fundamentals of N2/O2 plasma and heterogeneous catalysis |
| 作者: | David Graves
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| 承担单位: | University of California-Berkeley
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| 批准年: | 2016
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| 开始日期: | 2016-07-01
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| 结束日期: | 2019-06-30
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| 资助金额: | 300000
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | non-equilibrium nitrogen/oxygen plasma
; plasma
; efficient air plasma
; heterogeneous catalysisthis project
; non-equilibrium plasma
; infews n/p/h2o
; non-equilibrium
; n2/o2 plasma
; air plasma technology
; other plasma electro-catalytic technology
; plasma demonstration device
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| 英文摘要: | 1606062 PI: Graves
Title: INFEWS N/P/H2O: Fundamentals of N2/O2 plasma and heterogeneous catalysis
This project aims to advance air plasma technology in order to substantially reduce human perturbation to the global nitrogen cycle. The focus will be on establishing the scientific foundation necessary to efficiently couple non-equilibrium nitrogen/oxygen plasmas with heterogeneous catalysts in order to efficiently form nitric oxide (NO). If efficient air plasmas can create nitric oxide (NO), this can be readily transformed to nitogen oxide (NO2) and then to nitric acid (HNO3) by water absorption. Nitric acid could be used to trap otherwise fugitive ammonia (NH3), created when bacteria degrade organic waste. The ammonia is trapped at low pH as ammonium nitrate (NH4NO3), thus greatly increasing the nitrogen value of the organic fertilizer and avoiding the damaging environmental effects of the ammonia emission. The technology would be especially promising because the plasma can be powered by electricity that could be generated in a distributed, renewable fashion at the location of the waste generation, such as the farm. Rather than compete with conventional Haber-Bosch NH3 manufacturing technology, this technology seeks to reduce the need for synthetic fertilizers made in centralized plants far from their use.
Non-equilibrium plasmas can act as a homogeneous catalyst by lowering the activation energy of nitrogen dissociation. This process can be substantially improved by the addition of heterogeneous catalysts, but the underlying mechanisms are poorly understood. The proposed project will employ radical beam - surface studies under high vacuum and modulated beam mass spectrometry to study radical-surface catalytic interactions for a range of metal and metal oxide materials and surface temperatures. The data from these studies will be used to develop parameterized site balance models that can provide insights into near-atmospheric pressure studies of non-equilibrium nitrogen/oxygen plasmas in the presence of catalytic surfaces. The successful implementation of plasmas for this application could help motivate studies of other plasma electro-catalytic technologies. In addition to training graduate students, the PI plans to recruit undergraduate students from programs that engage women and minorities. An outreach program to middle school students involving plasma demonstration devices is also proposed. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/91966
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
David Graves. INFEWS N/P/H2O: Fundamentals of N2/O2 plasma and heterogeneous catalysis. 2016-01-01.
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