SO_2改性活性炭催化PS降解对氯苯酚的研究  

Research on the degradation of parachlorophenol by SO_2 modified activated carbon catalysis PS

作　　者：王梅梅[1,2] 曾泽泉[2] 刘子乐[3] 郭耀萍[1,2] 黄张根[2] 崔燕[2] 

机构地区：[1]中国科学院山西煤炭化学研究所,山西太原030001 [2]中国科学院大学,北京100049 [3]太原理工大学,山西太原030024

出　　处：《工业水处理》2017年第7期31-34,共4页Industrial Water Treatment

基　　金：国家自然科学基金青年基金项目(21507140);山西省基础研究计划青年科技研究基金(2014021016-3)

摘　　要：采用SO_2高温焙烧法对活性炭进行了掺硫改性,并以掺硫活性炭(ACS)为催化剂,研究了对氯苯酚(4-CP)在ACS活化过硫酸盐(ACS/PS)体系中的降解规律和机理。结果表明,ACS比表面积有所降低,同时表面掺杂的含硫官能团以砜基和噻吩基为主。ACS的催化活性有明显提升,尤其在酸性环境和较高反应温度时。在反应温度为55℃时,反应210 min,ACS/PS体系4-CP几乎完全降解,相对改性前提高30.9%。基于中间产物测定数据,初步推断了4-CP在ACS/PS体系中的降解机理和过程。Activated carbon has been subjected to S-doped modification by SO2 high temperature calcinations method,and using S- doped activated carbon（ACS） as catalyst,the degradation rules and mechanisms of parachlorophenol（4-CP）in ACS activated persulfate（ACS/PS）system are studied. The results show that ACS specific surface is decreased somewhat,and the sulfur-containing functional groups doped on surfaces are mainly sulphone radical and thiophene radical. The catalytic activity of ACS is increased obviously,especially in acidic environment and when the reaction temperature is comparatively high. When the reaction temperature is 55 ℃,and reaction time 210 min,4-CP is almost degraded completely in ACS/PS system,which is 30.9% higher than what it was before the modification. Based on the measured value of intermediate products,the degradation mechanisms and process of 4-CP in ACS/PS system are deduced preliminarily.

关 键 词：二氧化硫改性 活性炭 活化过硫酸盐 对氯苯酚 

分 类 号：TQ424.1[化学工程]