Pd/Fe对-二氯苯的催化脱氯及其动力学

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• REACTION KINETICS, CATALYSIS AND…… • 上一篇下一篇

Pd/Fe对-二氯苯的催化脱氯及其动力学

周红艺; 徐新华; 汪大翚

Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-08-28 发布日期:2004-08-28
通讯作者: 周红艺徐新华汪大翚

Catalytic Dechlorination and Kinetics of o-Dichlorobenzene by Pd／Fe

ZHOU Hongyi; XU Xinhua; WANG Dahui

Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China

Received:1900-01-01 Revised:1900-01-01 Online:2004-08-28 Published:2004-08-28
Contact: ZHOU Hongyi

摘要/Abstract

摘要： o-Dichlorobenzene (o-DCB) was dechlorinated by Pd/Fe powder in water through catalytic reduction. The dechlorination reaction is believed to take place on the surface site of the catalyst via a pseudo-first-order reaction. The final reduction product of o-DCB is benzene. The dechlorination rate increases with the increase of bulk loading of palladium due to the increase of both the surface loading of palladium and the total surface area. Dechlorinationefficiency accounts for 90% at Pd/Fe mass ratio 0.02% and metal to solution ratio about 53.3 g·L^-1 in 120 minutes. Dechlorination is affected by the reaction temperature, pH, Pd/Fe ratio and the addition of Pd/Fe. Ea is found to be 102.5kJ·mol^-1 in the temperature range of 287--313K.

关键词: 催化脱氯;动力学;Pd Fe;二氯苯;o-DCB;废水处理

Abstract: o-Dichlorobenzene (o-DCB) was dechlorinated by Pd/Fe powder in water through catalytic reduction. The dechlorination reaction is believed to take place on the surface site of the catalyst via a pseudo-first-order reaction. The final reduction product of o-DCB is benzene. The dechlorination rate increases with the increase of bulk loading of palladium due to the increase of both the surface loading of palladium and the total surface area. Dechlorinationefficiency accounts for 90% at Pd/Fe mass ratio 0.02% and metal to solution ratio about 53.3 g·L^-1 in 120 minutes. Dechlorination is affected by the reaction temperature, pH, Pd/Fe ratio and the addition of Pd/Fe. Ea is found to be 102.5kJ·mol^-1 in the temperature range of 287--313K.

Key words: Pd/Fe, dechlorination, catalytic reductive dechlorination, o-DCB

周红艺,徐新华,汪大翚. Pd/Fe对-二氯苯的催化脱氯及其动力学[J]. CIESC Journal.

ZHOU Hongyi, XU Xinhua, WANG Dahui. Catalytic Dechlorination and Kinetics of o-Dichlorobenzene by Pd／Fe[J]. .

Pd/Fe对-二氯苯的催化脱氯及其动力学

Catalytic Dechlorination and Kinetics of o-Dichlorobenzene by Pd／Fe

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