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活性炭表面酸化改性对催化聚丙烯成炭的影响
引用本文:徐元元,公维光,郑柏存.活性炭表面酸化改性对催化聚丙烯成炭的影响[J].医学教育探索,2015(4):464-470.
作者姓名:徐元元  公维光  郑柏存
作者单位:华东理工大学体育新材料研发中心, 上海 200237,华东理工大学体育新材料研发中心, 上海 200237,华东理工大学体育新材料研发中心, 上海 200237
摘    要:通过硝酸氧化处理对椰壳类活性炭(AC)进行酸化改性,研究酸化条件(温度、时间、浓度)对AC酸值的影响,并考察不同酸值的AC对PP(聚丙烯)/NiO/AC复合材料成炭的影响。采用比表面积及孔径分析仪考察改性活性炭的比表面积及孔结构;以Beohm滴定实验、X射线光电子能谱(XPS)表征改性AC表面含氧官能团种类及含量;用马弗炉、扫描电镜(SEM)考察不同酸值的AC和NiO协效催化聚丙烯成炭及成炭结构。实验结果表明:硝酸处理后,AC比表面积和孔结构均有所变化;酸化条件对AC表面酸性官能团的含量影响显著,改性后表面酸性官能团含量明显增加,酸性官能团主要为-COOH、-CO和-OH;AC表面酸性官能团的增多促进了聚丙烯自身成炭能力,改善了残炭结构。

关 键 词:活性炭  酸化  聚丙烯  成炭催化
收稿时间:2014/11/28 0:00:00

Effect of Surface Acidification of Activated Carbon on Catalytic Carbonization of Polypropylene
XU Yuan-yuan,GONG Wei-guang and ZHENG Bai-cun.Effect of Surface Acidification of Activated Carbon on Catalytic Carbonization of Polypropylene[J].Researches in Medical Education,2015(4):464-470.
Authors:XU Yuan-yuan  GONG Wei-guang and ZHENG Bai-cun
Institution:Advanced Sports Material Research and Development Center, East China University of Science and Technology, Shanghai 200237, China,Advanced Sports Material Research and Development Center, East China University of Science and Technology, Shanghai 200237, China and Advanced Sports Material Research and Development Center, East China University of Science and Technology, Shanghai 200237, China
Abstract:Acid value of the active carbon (AC) on catalytic carbonization of PP/NiO/AC was investigated by modified coconut shell activated carbon through HNO3 oxidation. The effects of acidification temperature, time and concentration on the acid value were studied. Specific surface area and pore structures of the AC were characterized by BET and SEM. The type and content of surface oxygenic functional groups was characterized by Beohm titration and XPS. The results indicated that specific surface area and pore structure were changed when AC was treated by HNO3. The surface oxygen groups increased significantly, mainly including -COOH, -CO and -OH. The increase of surface oxygen groups of AC promoted the carbonization ability of polypropylene, and improved the structure of carbon residue.
Keywords:activated carbon  acidification  polypropylene  catalytic carbonization
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