铁盐作为邻氯苯酚湿式氧化的催化剂。

Fe salts as catalyst for the wet oxidation of o-chlorophenol.

作者信息

Xu Xin-hua, He Ping, Jin Jian, Hao Zhi-wei

机构信息

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

出版信息

J Zhejiang Univ Sci B. 2005 Jun;6(6):569-73. doi: 10.1631/jzus.2005.B0569.

DOI:10.1631/jzus.2005.B0569

PMID:15909346

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1389892/

Abstract

Catalytic wet air oxidation (CWAO) of o-chlorophenol in wastewater was studied in a stainless steel autoclave using four different Fe catalysts in the temperature range of 100-200 degrees C. Experimental results showed that high rate of o-chlorophenol and COD(Cr) (Chemical Oxygen Demand, mg/L) removal by CWAO was obtained at relatively low temperature and pressure. The catalysts Fe2(SO4)3, FeSO4, Fe2O3 and FeCl3 all exhibited high catalytic activity. More than 93.7% of the initial COD(Cr) and nearly 100% of o-chlorophenol were removed at 150 degrees C after 150 min with FeSO4 as catalyst. The CWAO of o-chlorophenol was found to be pseudo-first order reaction with respect to o-chlorophenol, with activation energy of 75.56 kJ/mol in the temperature range of 100-175 degrees C.

摘要

在不锈钢高压釜中，使用四种不同的铁催化剂，在100 - 200℃温度范围内研究了废水中邻氯苯酚的催化湿式空气氧化（CWAO）。实验结果表明，在相对较低的温度和压力下，CWAO对邻氯苯酚和COD（Cr）（化学需氧量，mg/L）有较高的去除率。催化剂Fe2(SO4)3、FeSO4、Fe2O3和FeCl3均表现出较高的催化活性。以FeSO4为催化剂，在150℃下反应150分钟后，初始COD（Cr）的去除率超过93.7%，邻氯苯酚的去除率接近100%。研究发现，邻氯苯酚的CWAO对邻氯苯酚为准一级反应，在100 - 175℃温度范围内的活化能为75.56 kJ/mol。