Ammonia Decomposition Using Electron Beam

作者：Son Youn Suk; Kim Ki Hyung; Kim Ki Joon; Kim Jo Chun^*

来源：Plasma Chemistry and Plasma Processing, 2013, 33(3): 617-629.

DOI：10.1007/s11090-013-9444-x

• Ammonia
• Electron beam
• Radical
• Decomposition
• By-product

This study was carried out to determine the decomposition characteristics of ammonia using an electron beam (EB). Factors influencing these decomposition characteristics such as background gases (air, N-2, O-2, and He), initial ammonia concentration (50-150 ppm), relative humidity (0 or 90 %), and absorbed dose (1-15 kGy) were investigated. In the results of removal characteristics by different background gases, the decomposition efficiency of ammonia was lower (approximately 45 % at 5 kGy) when He was used as a background gas compared to the efficiencies when other background gases were selected. Ammonia removal efficiencies, when initial concentrations were 50 and 150 ppm, were 95 and 75 %, respectively, at 15 kGy. Ozone generation by EB irradiation increased from 2.5 kGy and reached a maximum of 45 ppm when 5 kGy of the absorbed dose was irradiated. However, ozone generation started to decrease when the absorbed dose exceeded 5 kGy and decreased to 0.27 ppm at 15 kGy.

• 出版日期2013-6