Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (7): 923-937.DOI: 10.19894/j.issn.1000-0518.220352

• Review •     Next Articles

Recent Progress in Nitrogen Fixation via Gliding Arc Plasma

Xiao-Fang XU, Qiang CHEN, Hai-Bao ZHANG()   

  1. Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication,Beijing 102600,China
  • Received:2022-10-27 Accepted:2023-04-08 Published:2023-07-01 Online:2023-07-19
  • Contact: Hai-Bao ZHANG
  • About author:hbzhang@bigc.edu.cn
  • Supported by:
    the National Natural Science Foundation of China (No.?11875090)?, Beijing Municipal National Science Foundation(1192008);Beijing Municipal Education Commission Project(KM202010015003)

Abstract:

Traditional industrial nitrogen fixation (NF) process uses the Haber-Bosch process which requires high temperature and high pressure, causing high energy consumption and serious pollution. Gliding arc plasma (GAP) combines the advantages of thermal plasma and cold plasma, which can efficiently produce active species and improve energy efficiency obviously. It has great application potential in the field of NF, and has received extensive attention in recent years. However, the research on NF via GAP is relatively fragmented at present. It is necessary to summarize the specific content. The research progress of NF via GAP at home and abroad in past 10 years is reviewed in this paper, mainly including GAP discharge mechanism, reactor design, process parameters and NF reaction mechanism. GAP discharge has B-G mode with breakdown following gliding discharge and A-G mode with continuous steady discharge. A-G mode discharge helps to improve nitrogen fixation efficiency. With the continuous development of GAP discharge technology, the electrode structure in GAP reactor has evolved from the traditional 2D blade structure to a variety of 3D cylindrical structures. Based on process optimization, GAP facilitates the vibrational excitation of N2 molecules, thereby promoting the splitting and transformation of N2 molecules. In the last, the research on NF through GAP is prospected.

Key words: Gliding arc plasma, Reactor, Energy consumption, Reaction mechanism

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