氧气中臭氧分解规律

Rules of Ozone Decomposition in Oxygen

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2.43×104J.mol-1,其分解的速率常数k=95.6exp(-2.43×104/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.

The UV-absorption curves of gaseous ozone in oxygen at different time and different temperature were investigated by using UV-2501 spectrophotometer. Rules of ozono decomposition in oxygen in normal condition were obtained. The results indicate 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/RT） 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 evidence.