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钴负载MCM-41分子筛催化臭氧氧化水中氯代苯甲酸

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曾俊喻, 邴吉帅, 蓝冰燕, 廖高祖, 张秋云, 李旭凯, 李来胜. 钴负载MCM-41分子筛催化臭氧氧化水中氯代苯甲酸[J]. 环境化学, 2012, 31(5): 663-668.
引用本文: 曾俊喻, 邴吉帅, 蓝冰燕, 廖高祖, 张秋云, 李旭凯, 李来胜. 钴负载MCM-41分子筛催化臭氧氧化水中氯代苯甲酸[J]. 环境化学, 2012, 31(5): 663-668.
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ZENG Junyu, BING Jishuai, LAN Bingyan, LIAO Gaozu, ZHANG Qiuyun, LI Xukai, LI Laisheng. Catalytic ozonation of chlorobenzoic acid over cobalt oxide supported on MCM-41 mesoporous molecular sieves[J]. Environmental Chemistry, 2012, 31(5): 663-668.
Citation: ZENG Junyu, BING Jishuai, LAN Bingyan, LIAO Gaozu, ZHANG Qiuyun, LI Xukai, LI Laisheng. Catalytic ozonation of chlorobenzoic acid over cobalt oxide supported on MCM-41 mesoporous molecular sieves[J]. Environmental Chemistry, 2012, 31(5): 663-668.
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钴负载MCM-41分子筛催化臭氧氧化水中氯代苯甲酸

  • 1.

    华南师范大学, 广州, 510006

  • 基金项目:

    国家自然科学基金(20977036)资助.

Catalytic ozonation of chlorobenzoic acid over cobalt oxide supported on MCM-41 mesoporous molecular sieves

  • 1.

    School of Chemistry & Environment, South China Normal University, Guangzhou, 510006, China

  • Fund Project:

  • 摘要: 通过水热法合成介孔分子筛MCM-41,采用等体积浸渍法制备了Co负载MCM-41分子筛催化剂(Co/MCM-41).小角X-射线粉末衍射(XRD)、紫外-可见漫反射光谱(UV-vis DRS)、N2吸附-脱附等温线及透射电镜(TEM)等对催化剂的成分、结构的表征结果显示,Co/MCM-41保持了纯硅MCM-41有序的介孔结构,钴元素以钴氧化物形式存在,比表面达到772 m2·g-1.将Co/MCM-41分子筛用于催化臭氧氧化水中对氯苯甲酸(p-CBA)的研究,结果表明,在优化条件下(2%负载量和25 ℃反应温度),催化剂的加入显著改善了TOC去除率,达到84.6%, 是单独臭氧氧化的1.6倍.
    Abstract: MCM-41 mesoporous molecular sieve was synthesized by a hydrothermal method and Co/MCM-41 was prepared by an incipient wetness impregnation method. The materials were characterized by a low angle X-ray powder diffraction (XRD), UV-Vis diffuse reflection spectroscopy (UV-DRS), N2 adsorption-desorption and transmission electron microscopy (TEM). The results showed that the material retained a highly ordered mesopore structure of pure silica MCM-41 and had a surface area of 772 m2·g-1, Cobalt ions mainly exist as cobalt oxide clusters distributed on the surface of molecular sieve. In this study, Co/MCM-41 mesoporous molecular sieve was used for catalytic ozonation of p-CBA. The results showed that under the optimal condition(2% cobalt load and 25 ℃), the mineralization of p-CBA increased to 84.6% in the presence of catalyst, which is 1.6 times that of ozone alone at the reaction time of 60 min.
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  • 收稿日期:  2011-09-21

钴负载MCM-41分子筛催化臭氧氧化水中氯代苯甲酸

  • 1. 华南师范大学, 广州, 510006
  • 收稿日期:  2011-09-21
基金项目:

国家自然科学基金(20977036)资助.

摘要: 通过水热法合成介孔分子筛MCM-41,采用等体积浸渍法制备了Co负载MCM-41分子筛催化剂(Co/MCM-41).小角X-射线粉末衍射(XRD)、紫外-可见漫反射光谱(UV-vis DRS)、N2吸附-脱附等温线及透射电镜(TEM)等对催化剂的成分、结构的表征结果显示,Co/MCM-41保持了纯硅MCM-41有序的介孔结构,钴元素以钴氧化物形式存在,比表面达到772 m2·g-1.将Co/MCM-41分子筛用于催化臭氧氧化水中对氯苯甲酸(p-CBA)的研究,结果表明,在优化条件下(2%负载量和25 ℃反应温度),催化剂的加入显著改善了TOC去除率,达到84.6%, 是单独臭氧氧化的1.6倍.

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