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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 m.2g-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.
The mesoporous molecular sieve MCM-41 was hydrothermally synthesized and the Co-supported MCM-41 molecular sieve catalyst (Co / MCM-41) was prepared by the same volume impregnation method.X-ray powder diffraction (XRD), ultraviolet-visible diffuse reflectance The structure and properties of the catalysts were characterized by UV-vis DRS, N2 adsorption-desorption isotherm and TEM. The results show that the MC / MCM-41 maintains the ordered mesoporous structure of MCM-41 , Cobalt element exists in the form of cobalt oxide, the specific surface reaches 772 m 2g-1. The Co / MCM-41 molecular sieve was used to catalyze the p-CBA in ozonized water. The results showed that, (2% loading and 25 ℃ reaction temperature), the addition of catalyst significantly improved the TOC removal rate to 84.6%, which is 1.6 times that of ozone alone.