Acceleration of Ozone Decomposition and center dot OH Generation by Hydroxylamine

作者：Zhang, Jing; Zhang, Yong-Li^*; Shi, Ya-Nan; Lin, Jie; Zhou, Peng; Zhang, Wan-Qing; Xu, Jian-Wei

来源：Ozone-Science & Engineering, 2016, 38(2): 150-155.

DOI：10.1080/01919512.2015.1086630

• Ozone
• Benzoic Acid
• Hydroxylamine
• Hydroxyl Radical

Most of protonated amines show very low reactivity with ozone in the process of generating hydroxyl radical (<bold>OH</bold>). This study proved that protonated hydroxylamine (HA) can accelerate the decomposition of ozone and promote the yield of <bold>OH</bold>. Benzoic acid (BA) was used as <bold>OH probe</bold>, the stimulation of ozone decomposition and <bold>OH generation by HA in the condition of pHs ranging from </bold>3.0 to 8.0 were studied. The results revealed the effect of HA, especially the protonated form of HA, on the ozone decomposition. Moreover, two reaction pathways of the reactive oxidant formation in O-3/HA process were proposed: (1) protonated HA reacted with ozone by the way of direct electron transfer to produce O-3(-); (2) unprotonated HA reacted directly with ozone to form O-2(-) and O-2(-) later reacted with O-3 to form O-3(-) .

• 出版日期2016-3-3
• 单位四川大学