在超声作用下增强氯代有机化合物的电催化降解

Enhanced electro-catalytic degradation of chloroorganic compounds in the presence of ultrasound.

作者信息

Yasman Yakov, Bulatov Valery, Rabin Irene, Binetti Marcello, Schechter Israel

机构信息

Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel.

出版信息

Ultrason Sonochem. 2006 Apr;13(3):271-7. doi: 10.1016/j.ultsonch.2005.04.005. Epub 2005 Jun 21.

DOI:10.1016/j.ultsonch.2005.04.005

PMID:15975844

Abstract

The application of finely divided (black) Pd and Pd-Fe powder in the sono-electro-catalytic reduction of chlorophenoxy herbicides (2,4-D) and chlorophenols (2,4-DCP) in aqueous solutions allows for effective destruction of toxic chlorinated aromatic compounds. At 20 degrees C complete conversion of these compounds is observed within 10 min. On bimetallic Pd/Fe catalyst, intermediates due to the oxidation reaction are detected in addition to the products of dechlorination. The bimetallic catalyst appears to be energetically and economically superior to the Pd. In both cases, the reaction times were considerably shortened in comparison with traditional electro-catalytic processes.

摘要

将细分的（黑色）钯和钯铁粉末应用于水溶液中氯苯氧基除草剂（2,4 - D）和氯酚（2,4 - 二氯苯酚）的声电催化还原，可有效破坏有毒的氯代芳香族化合物。在20摄氏度下，10分钟内可观察到这些化合物完全转化。在双金属钯/铁催化剂上，除了脱氯产物外，还检测到了氧化反应的中间体。双金属催化剂在能量和经济方面似乎优于钯。在这两种情况下，与传统的电催化过程相比，反应时间都大大缩短了。