液相催化还原法处理模拟氯苯废气实验研究

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氯；氯苯浓度在150~800 mg·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.

Experimental study on the catalytic dechlorination of simulated chlorobenzene gas in the liquid phase

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）.