ZnO超微粒子光催化氧化SO_2的研究  

Investigation on Photocatalytic Oxidation of SO_2 on ZnO Ultrafine Particles

作　　者：井立强[1] 孙晓君[1] 徐自力[2] 蔡伟民[1] 杜尧国[2] 

机构地区：[1]哈尔滨工业大学环境科学与工程系,黑龙江哈尔滨150001 [2]吉林大学环境科学与工程系,吉林长春130021

出　　处：《催化学报》2002年第1期37-40,共4页

摘　　要：利用ZnO光催化技术对SO2 氧化进行了研究 .结果表明 ,在一定的反应条件下 ,ZnO超微粒子光催化SO2 氧化的转化率较高 ,32 0℃下焙烧的ZnO超微粒子上SO2 氧化的转化率高达 99% .考察了氧和水蒸气分压等因素对SO2 氧化反应的影响 .用化学法对气态和凝聚态产物SO3 进行了定性分析 ,并对SO2The oxidation of gas-phase SO2 over ZnO by the technique of photocatalysis was investigated. It was found that under a certain condition, the photocatalytic oxidation rate of SO2 over ZnO ultrafine particles ( U FP) is higher. Particularly, the photocatalytic oxidation rate of SO2 over ZnO U FP calcined at 320degreesC is 99%. The influence of some factors, such as 02 partial pressure and steam partial pressure, on the photocatalytic oxidation of SO2 was studied. The gas and liquid product SO3 was qualitatively analysed by using chemical method, and the reaction kinetics and the reaction mechanism of the reaction were also probed into.

关 键 词：氧化锌 超微粒子 二氧化硫 光催化氧化 反应动力学 反应机理 大气污染物 污染治理 

分 类 号：O643.3[理学—物理化学]