杂多酸?膨润土催化体系对甲苯的降解研究

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英文篇名：Research on the degradation of toluene by heteropolyacid/bentonite catalytic system 作者：谭伟 ; 郑远利 ; 罗利军 ; 刘天成 ; 张仕丽 ; 杨敏 ; 王红斌 英文作者：TAN Wei;ZHENG Yuanli;LUO Lijun;LIU Tiancheng;ZHANG Shili;YANG Min;WANG Hongbin;School of Chemistry and Environment,Yunnan Minzu University; 关键词：膨润土 ; 杂多酸 ; 甲苯 ; 催化 英文关键词：bentonite;;heteropolyacid;;toluene;;catalysis 中文刊名：HJWR 英文刊名：Environmental Pollution & Control 机构：云南民族大学化学与环境学院; 出版日期：2017-01-15 出版单位：环境污染与防治 年：2017 期：v.39;No.290 语种：中文; 页：HJWR201701018 页数：4 CN：01 ISSN：33-1084/X 分类号：96-98+104

摘要

采用浸渍法,将膨润土浸渍于杂多酸(POM)溶液中成功制备出了杂多酸/膨润土复合光催化剂(POM-B),同时通过扫描电镜(SEM)、X射线衍射(XRD)对POM-B的形貌和结构进行了表征分析。结果表明:(1)POM-B最佳制备条件为POM负载量5%(质量分数)、浸渍时间36h。(2)当最佳制备条件制得的POM-B投加量为0.3g、紫外照射条件下,180 min的甲苯降解率可达89.33%,比没有紫外照射和无催化剂条件下的甲苯降解率(26.74%)提高了62.59百分点。膨润土是POM的优良载体,两者复合可提高了其光催化活性,改善了对甲苯的降解效果。
        Heteropolyacid/bentonitephotocatalyst composite(POM-B)was successfully synthesized by dipping bentonite in heteropolyacid(POM)solution.It's structure and morphology properties were characterized by scanning electron microscopy(SEM)and X-ray diffraction(XRD).The ability of photocatalytic degradation of toluene was studied.The results show that the best preparation conditions for POM-B was bentonite impregnated in the solution with 5% POM for 36 hours.The toluene degradation rate was increased to 89.33% with addition of 0.3g POM-B under the ultraviolet irradiation for 180 min which had raised 62.59 percent point compared to none ultraviolet irradiation and catalyst(26.74%).Bentonite was a good carrier for POM,the photocatalytic activity of POM-B was improved and the degradation rate of toluene raised.

引文

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