摘要
实验分别采用零价铁、镍／铁和钯／铁双金属在水中处理模拟氯苯气体，考察了3种体系的催化脱氯效果．选取钯铁双金属体系研究温度、钯化率及氯苯初始浓度对脱氯效果的影响．实验结果表明，双金属对氯苯的去除率均高于零价铁，钯铁体系脱氯效果最好；低的反应温度有利于氯苯的还原脱氟；氯苯浓度在150～800mg·m-3时，去除率随氯苯的浓度升高而增大；金属比例在0～0．05％时，钯铁体系的还原脱氯能力随钯化率的增加而增强．
The capabilities of Fe0 , Ni/Fe bimetal and Pd/Fe bimetal for reductive dechlorination of simulated chloro- benzene gas in aqueous solution were studied. Several important experiment parameters involved in this process were studied in the Pd/Fe system, including reaction temperature, Pd loading and initial concentration of chlorobenzene. The results showed that the removal efficiency of chlorobenzene by bimetal was higher than that by Fe0 , and the Pd/ Fe bimetal performed best in accelerating the reductive dechlorination reaction. Lower reaction temperature was in favor of chlorobenzene dechlorination; and the dechlorination efficiency increased with the increase of initial concen- tration of chlorobenzene and Pd weight ratio （Pd to Fe）.
出处
《浙江大学学报（理学版）》
CAS
CSCD
2013年第5期565-569,共5页
Journal of Zhejiang University（Science Edition）
关键词
还原脱氯
氯苯
双金属铁
reductive dechlorination
chlorobenzene
bimetallic iron
