氧气中臭氧分解规律

上海大学学报(自然科学版)

氧气中臭氧分解规律

谭桂霞;陈烨璞;徐引娟

上海大学理学院，上海 200444

收稿日期:2006-04-14 出版日期:2007-02-28 发布日期:2007-02-28

Rules of Ozone Decomposition in Oxygen

TAN Gui xia;CHEN Ye pu;XU Yin juan;et al

School of Sciences, Shanghai University, Shanghai 200444, China

Received:2006-04-14 Online:2007-02-28 Published:2007-02-28

摘要/Abstract

摘要： 在原来工作的基础上详细研究了常态条件下不同时刻、不同温度下氧气中臭氧的紫外吸收曲线，获得了常态条件下臭氧在氧气中的分解规律.实验结果表明,臭氧在氧气中的自分解遵循一级反应规律.平均表观活化能约为2.43×104 J?mol-1 ，其分解的速率常数 k =95.6exp(-2.43×104/ RT ) min-1 ，有关数据重现性良好.实验结果还表明，臭氧在氧气中的半衰期显著大于在空气中的半衰期.

关键词: 半衰期, 臭氧, 分解规律

Abstract: The UV absorption curves of gaseous ozone in oxygen at different time and diffe rent temperature were investigated by using UV 2501 spectrophotometer. Rules of ozone decomposition in oxygen in normal condition were obtained. The results in dicate that the self decomposition reaction of ozone in oxygen is approximately the first order reaction. The average apparent activation energy is about 2.43 ×104 J?mol-1 . The velocity constant is k =95.6 exp(-2.43×104/ R T ) min-1 . The reproducibility of related date appeared good. It is concluded that the half life of ozone in oxygen is much longer than in atmosphere in evi dence.

Key words: decomposition rule, half life, ozone

谭桂霞;陈烨璞;徐引娟. 氧气中臭氧分解规律[J]. 上海大学学报(自然科学版).

TAN Gui xia;CHEN Ye pu;XU Yin juan;et al . Rules of Ozone Decomposition in Oxygen[J]. Journal of Shanghai University（Natural Science Edition）.