钯/铁双金属对六氯乙烷的催化还原脱氯  

Dechlorination of Hexachloroethane by Catalytic Reduction Using Pd/Fe Bimetal

作　　者：吴双桃[1] 陈少瑾[1] 

机构地区：[1]韩山师范学院环境化学应用技术研究所,广东潮州521041

出　　处：《化工环保》2007年第1期17-19,共3页Environmental Protection of Chemical Industry

基　　金：广东省科技攻关项目(2003C32910)

摘　　要：用钯/铁双金属对水溶液中的六氯乙烷(HCE)进行催化还原脱氯,考察了各种因素对脱氯效果的影响。实验结果表明,在厌氧环境、饱和 HCE 溶液体积80 mL、钯与铁质量比0.03%、钯/铁双金属质量3 g、反应时间130min 的条件下,脱氯率可达98.8%。采用气相色谱-质谱联用仪对 HCE 及其脱氯产物进行分析,结果表明,HCE的脱氯中间产物主要是四氯乙烯,四氯乙烯进一步脱氯的中间产物未检出。Hexachloroethane （HCE）in water was dechlorinated by catalytic reduction using Pd/Fe bimetal. The factors affecting dechlorination were studied. The results show that under the anaerobic condition and when the volume of HCE saturated solution is 80 mL, the mass ratio of Pd to Fe is 0.03 %, the mass of Pd/Fe bimetal is 3 g and the reaction time is 130 min, the dechlorination efficiency can reach 98.8 %. HCE and its dechlorinated product were analyzed by GC-MS, and the results indicate that the intermediate product in HCE dechlorination is tetrachloroethylene, but no intermediate product in tetrachloroethylene dechlorination is detected.

关 键 词：六氯乙烷 钯 铁 催化还原 脱氯 

分 类 号：X592[环境科学与工程—环境工程]