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活性炭纤维湿氧化改性表面含氧官能团的变化规律
引用本文:张登峰,鹿雯,王盼盼,杨丽莉,李晨曦,曾向东.活性炭纤维湿氧化改性表面含氧官能团的变化规律[J].煤炭学报,2008,33(4):439-443.
作者姓名:张登峰  鹿雯  王盼盼  杨丽莉  李晨曦  曾向东
作者单位:昆明理工大学,环境科学与工程学院,云南,昆明,650093
摘    要:根据Boehm滴定方法,测定了不同双氧水浸渍浓度、浸渍pH和浸渍时间条件下制备的改性黏胶基活性炭纤维表面3种主要含氧官能团含量,得出了含氧官能团随浸渍浓度、pH和时间的变化规律;利用TG/DTA分析技术表征了改性前后样品表面的含氧官能团及其稳定性.研究表明,改性后活性炭纤维表面含氧官能团含量均有不同程度的增长,3种官能团总量最高达到2.401 mmol/g;浸渍浓度对含氧官能团含量影响最大,pH次之,时间影响最小;热分析结果证实,相比原样而言,改性样品表面含有更多类型和数量丰富的含氧官能团.

关 键 词:黏胶基活性炭纤维  湿氧化  含氧官能团  双氧水
文章编号:0253-9993(2008)04-0439-05
修稿时间:2007年9月4日

Effect of wet oxidized modification on oxygen-containing functional groups of activated carbon fibers
ZHANG Deng-feng,LU Wen,Wang Pan-pan,YANG Li-li,Li Chen-xi,ZENG Xiang-dong.Effect of wet oxidized modification on oxygen-containing functional groups of activated carbon fibers[J].Journal of China Coal Society,2008,33(4):439-443.
Authors:ZHANG Deng-feng  LU Wen  Wang Pan-pan  YANG Li-li  Li Chen-xi  ZENG Xiang-dong
Abstract:An investigation was made into the influence of impregnated concertration,pH and time on the amount of oxygen-containing functional groups of the modified viscose activated carbon fibers;according to Boehm's titration method,the amounts of three kinds of oxygen-containing functional groups of activated carbon fibers modified under three different ingredients including the impregnated concentration,pH and time of H2O2 were characterized;the amount and stability of oxygen-containing functional groups of original and modified samples were analyzed by TG/DTA analysis.The results indicate that the amount of oxygen-containing functional groups of the modified samples increase variously,the maximum amount of the total three functional groups is 2.401 mmol/g,the influence of impregnated concentration on the amount of oxygen-containing functional groups is the most evident,next is pH and the influence of time is the most indistinct;the thermal analysis shows that the category and amount of oxygen-containing functional groups of the modified sample is more abundant than the original sample.
Keywords:viscose activated carbon fibers  wet oxidant  oxygen-containing functional groups  H2O2
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