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通过水下气泡排放对固化的无催化剂氧化:性能优化和机制探索

Zi-Kai Zhou¹, Shu-Qi Li¹, Chao-Jun Chen¹

¹Key Lab of Materials Modification by Laser, Ion, and Electron Beams Dalian University of Technology, Ministry of Education, Dalian 116024, People's Republic of China. wenxq@dlut.edu.cn.

Physical chemistry chemical physics : PCCP

|June 19, 2025

概括

低温等离子体为固提供了一个可持续的替代方案,将空气转化为水中的氧化物 (NOx). 这项研究优化了等离子反应器,实现了低能耗高效合成.

科学领域:

化学工程是化学工程的重要组成部分.
环境科学环境科学
等离子体物理学的物理学

背景情况:

哈伯-博斯固过程面临着重大的环境和能源挑战.
低温等离子技术为固定提供了一个有希望的,节能的替代方案.

研究的目的:

用纳秒脉冲等离子体研究水中氧化 (NOx-) 的高效合成.
探索运行参数对气体-液体双相系统中固性能的影响.

主要方法:

利用纳秒脉冲动力系统与水下微孔同轴反应堆来产生泡火花放电.
系统地改变脉冲电压,气体流速和气体成分,以分析产品度.
采用等离子体排放光谱和能量损失路径分析来了解反应机制.

主要成果:

在153μmol min-1达到最佳的固定,能量消耗低至4.93 MJ mol-1.1.
增加的脉冲电压增加了NOx产量,促进了酸 (HNO3) 和二氧化 (NO2) 的形成.
最佳的氧气 (O2) 比率提高了产量,而过度的气流由于质量转移限制而降低了效率.

结论:

在气液双相系统中的纳米秒脉冲等离子是有效的固.
优化脉冲电压,气体成分和流速等参数对于高效的NOx合成至关重要.
这项研究为潜在的工业应用提供了对控制基于等离子体的固定的见解.

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