文献类型：期刊文献

中文题名：有机膨润土负载纳米铁去除2,4-二氯酚

英文题名：REMOVAL OF 2,4-DICHLOROPHENOL BY NANOSCALE ZERO-VALENT IRON SUPPORTED ON ORGANOBENTONITE

作者：胡六江[1];李益民[1];李建法[1]

机构：[1]绍兴文理学院化学系

年份：2008

卷号：36

期号：9

起止页码：1220

中文期刊名：硅酸盐学报

外文期刊名：Journal of the Chinese Ceramic Society

收录：CSTPCD、、EI(收录号：20084211646637)、北大核心2004、Scopus(收录号：2-s2.0-53649102705)、CSCD2011_2012、北大核心、CSCD

基金：浙江省自然科学基金(Y506288);绍兴市科技计划(2006A32004)资助项目

语种：中文

中文关键词：有机膨润土;负载纳米铁;还原;2,4-二氯酚;协同作用

外文关键词：organobentonite; supported nanoscale zero-valent iron; reduction; 2,4-dichlorophenol; synergetic effect

中文摘要：用具有良好吸附能力的有机膨润土作载体,通过FeSO4与NaBH4反应制得有机膨润土负载的纳米铁(nanoscale zero-valent iron supported onorganobentonite,NZVI/CTMAB-Bent)。用X射线衍射、Brunauer-Emmett-Teller法对NZVI/CTMAB-Bent进行了结构表征,并将NZVI/CTMAB-Bent作催化剂用于2,4-二氯酚的去除。考察了NZVI/CTMAB-Bent与2,4-二氯酚反应过程中,介质pH值、不同起始浓度的2,4-二氯酚对其去除率的影响,并与相同铁含量的纳米铁(nanoscale zero-valent iron,NZVI)进行了比较。结果表明:在相同实验条件下,2,4-二氯酚与NZVI/CTMAB-Bent反应120min后去除率达90.6%,不仅远高于相同铁含量NZVI对2,4-二氯酚去除率(23.2%),而且也明显优于相同铁含量的NZVI和含土量相同的有机膨润土对2,4-二氯酚去除率的加和(39.0%)。

外文摘要：In the presence of organobentonite with good sorption capacity, nanoscale zero-valence iron（NZVI） supported on organobentonite （NZVI/CTMAB-Bent） was prepared with NaBH4 and FeSO4 aqueous solution. The structure of NZVI/CTMAB-Bent was characterized by X-ray diffraction and the Brunauer-Emmett-Teller method. NZVI/CTMAB-Bent was used as a catalyst for removing 2,4-dichlorophenol, The effects of pH values and initial 2,4-dichlorophenol concentrations on its removal rate by NZVI/ CTMAB-Bent were investigated, and were compared with those of unsupported NZVI containing the same amount of iron as NZVI/CTMAB-Bent. The results indicate that in the same experimental conditions, the 2,4-dichlorophenol removal by NZVI/ CTMAB-Bent reached 90.6% after 120min. The removal is not only much higher than that （23.2%） of the NZVI containing the same amount of iron, but also superior to the sum of removal （39.0%） by NZVI containing the same amount of iron and the organobentonite containing the same amount of clay as NZVI/CTMAB-Bent.