摘要
SO3光解反应的反应式为2SO3+hν(λ1)2SO2+O2+hν(λ2),因而SO3的转化率α与温度T,波长λ1和λ2有关.利用公式△rG0m+RTInK0p=0.1196λ1-0.1196λ2计算了当T=318K,λ1=211nm,α=35%时,λ2=277.8nm,这一波长正好位于SO2的吸收峰,从而解释了为什么在318K时SO3的转化率为35%.
The formula of SO3 photolytic reaction is 2SO3+hν(λ1)2SO2+O2+hν(λ2), so SO3 per-cent conversion (α) is related with temperature and two light wavelengths (λ1 ,λ2 ). If T = 318K, λ1 =211nm and α =35% ,λ2is calculated by the formula△rG0m+RTInK0p=0.1196λ1-0.1196λ2,it is 277.8 nm,just in the range of SO2 absorption peak. The result explains why SO3 conversion efficiency (α) is 35%.
出处
《泰山学院学报》
2009年第3期55-58,共4页
Journal of Taishan University
关键词
光化反应
吉布斯自由能
转化率
平衡常数
photochemical reaction
Gibbs energy
percent conversion
equilibrium constant