氢
氨
氨生产
非平衡态热力学
等离子体
氮气
化学
材料科学
原子物理学
化学物理
无机化学
热力学
物理
有机化学
核物理学
作者
Ning Liu,Xingqian Mao,Christopher Kondratowicz,Timothy Y. Chen,Bowen Mei,Ziyu Wang,Yijie Xu,Hongtao Zhong,Zhiyu Shi,A. Morozov,Arthur Dogariu,Yiguang Ju
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2024-04-08
卷期号:: 2031-2036
标识
DOI:10.1021/acsenergylett.4c00729
摘要
Nonequilibrium generation of atomic nitrogen and hydrogen governing ammonia production both in the gas phase and on the catalyst surface is critical to plasma-aided ammonia synthesis. Here, this work studies the nonequilibrium generation of atomic nitrogen and hydrogen with a focus on the kinetic role of vibrational energy transfer of hydrogen molecules in plasma-aided ammonia synthesis. By combining two-photon absorption laser-induced fluorescence measurements and plasma kinetic modeling, we found that plasma not only generates ammonia but also produces critical H, N, and NH radicals via both electron impact and vibrational energy transfer excitations. The vibrational energy transfer from the excited hydrogen H2(v = 1) to higher vibrational levels H2(v = 2–3) via the V–V exchange (H2(v)–H2(v)) and V–V′ exchange (N2(v)–H2(v)) significantly enhances the H and NH production and then promotes the coupling between N and NH for ammonia synthesis both in the gas phase and on the catalyst surface.
科研通智能强力驱动
Strongly Powered by AbleSci AI