| 金属催化还原技术对p-二氯苯的脱氯 |
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| 引用本文： | 徐新华,周红艺,汪大翚.金属催化还原技术对p-二氯苯的脱氯[J].环境科学,2004,25(6):97-101. |
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| 作者姓名： | 徐新华 周红艺 汪大翚 |
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| 作者单位： | 1. 浙江大学环境工程系,杭州,310027
2. 浙江工业大学生物与环境工程学院,杭州,310032 |
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| 基金项目： | 国家科技部国际合作项目(AM10:15);浙江省科技计划项目(2004C34006) |
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| 摘 要： | 研究了Pd/Fe双金属体系对p-二氯苯(p-DCB)的快速催化还原脱氯处理. 结果表明, 在Pd的催化作用下,零价Fe对p-DCB具有较好的还原脱氯效率. 当Pd/Fe双金属的钯化率为0.02%,催化还原剂的用量为4g/75mL,反应90min p-DCB脱氯率达到90%以上;p-DCB的脱氯效率与溶液初始pH值、反应温度、钯化率、Pd/Fe投加量等因素有关;p-DCB在催化还原脱氯过程中先生成氯苯,而后继续脱氯生成苯.
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| 关 键 词： | 钯/铁双金属 催化还原 脱氯 p-二氯苯 |
| 文章编号： | 0250-3301(2004)06-0097-05 |
| 收稿时间： | 1/5/2004 12:00:00 AM |
| 修稿时间： | 2004/4/12 0:00:00 |
Dechlorination of p-Dichlorobenzene by Metallic Catalytic Reduction Technology |
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| XU Xin-hu,ZHOU Hong-yi and WANG Da-hui.Dechlorination of p-Dichlorobenzene by Metallic Catalytic Reduction Technology[J].Chinese Journal of Environmental Science,2004,25(6):97-101. |
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| Authors: | XU Xin-hu ZHOU Hong-yi and WANG Da-hui |
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| Institution: | Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China. |
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| Abstract: | Pd/Fe bimetallic catalysts were synthesized by chemical deposition and used to dechlorination treatment of p-DCB. Batch experiments demonstrated that the Pd/Fe bimetallic particles can effectively dechlorinate p-DCB. Dechlorination efficiency accounted for more than 90% at Pd weight ratio (Pd to Fe) 0.02% and metal to solution ratio about 4g/74mL in 90min. Dechlorination ratios were affected by reaction temperature, initial pH, Pd ratio and the addition of Pd/Fe. Chlorobenzene represented stable partially dechlorinated intermediates in the generation of benzene. |
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| Keywords: | Pd/Fe bimetal catalytic redution dechlorination p-DCB |
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