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Catalytic dechlorination of chlorinated methanes by nanoscale Pd/Fe bimetallic particles

Catalytic dechlorination of chlorinated methanes by nanoscale Pd/Fe bimetallic particles
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摘要 This paper examined the potential of using laboratory-synthesized nanoscale Pd/Fe bimetallic particles to dechlorinate chlorinated methanes, including dichloromethane (DCM), trichloromethane (CF) and tetrachloromethane (CT). Nanoscale Pd/Fe bimetallic particles were characterized in terms of surface area, morphology, size and structure. The parameters affecting the dechlorination efficiency were studied through batch experiments. Effects of Pd content, Pd/Fe addition, and the initial pH value of reaction system on the dechlorination efficiency of chlorinated methanes were determined systematically. Results show that nanoscale Pd/Fe bimetallic particles play a prominent role in the dechlorination of chlorinated methanes. The change of pH value and ferrous ion concentration during dechlorination reaction were also investigated in this study. It is found that the dechlorination efficiency of chlorinated methanes is in the order of CT>CF>DCM. This paper examined the potential of using laboratory-synthesized nanoscale Pd/Fe bimetallic particles to dechlorinate chlorinated methanes, including dichloromethane （DCM）, trichloromethane （CF） and tetrachloromethane （CT）. Nanoscale Pd/Fe bimetallic particles were characterized in terms of surface area, morphology, size and structure. The parameters affecting the dechlorination efficiency were studied through batch experiments. Effects of Pd content, Pd/Fe addition, and the initial pH value of reaction system on the dechlorination efficiency of chlorinated methanes were determined systematically. Results show that nanoscale Pd/Fe bimetallic particles play a prominent role in the dechlorination of chlorinated methanes. The change of pH value and ferrous ion concentration during dechlorination reaction were also investigated in this study. It is found that the dechlorination efficiency of chlorinated methanes is in the order of CT CF DCM.
作者 王向宇 刘惠玲
机构地区 School of Municipal and Environmental Engineering
出处 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第1期24-28,共5页 哈尔滨工业大学学报（英文版）
基金 Sponsored by the National Natural Science Foundation of China (Grant No. 50978066) State Key Laboratory of Urban Water Resources and Environment (Grant No.2008DX06)
关键词 nanoscale Pd/Fe bimetallic particles chlorinated methane dechlorination 铁离子浓度 催化脱氯 金属粒子 钯含量 纳米级 氯化甲烷 初始pH值 甲烷氯化物
分类号 TQ252.1 [化学工程—有机化工] TD853.37 [矿业工程—金属矿开采]
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参考文献18

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Journal of Harbin Institute of Technology(New Series)
2010年 第1期

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