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利用水热合成方法,在低浓度盐酸下用三嵌段共聚物EO106P O70EO106(F 127)作为模板剂,在100℃,130℃和150℃的条件下,制备了3种笼型介孔二氧化硅。通过粉末N 2气吸附-脱附实验表征其孔径(P D)及比表面积(BET)、扫描电镜(SEM)观察其表面形貌、透射电子显微镜(T EM)分析其微观结构;通过表征结果分析,该材料具有笼型介孔结构。同时,将该介孔材料应用在色谱分离方面,对氯苯,苯乙烯,1,2-二苯乙烯,联苯4种物质混合物进行分离,与其他多种二氧化硅材料比较,150℃的条件下合成的KI T-5-150分离效果最好。
Three kinds of mesoporous mesoporous carbon dioxide were prepared by hydrothermal method under the conditions of 100 ℃, 130 ℃ and 150 ℃ with the triblock copolymer EO106P O70EO106 (F 127) as the template under low concentration hydrochloric acid. silicon. The pore size (PD) and specific surface area (BET) were characterized by powder N2 adsorption-desorption experiments. The surface morphology was observed by scanning electron microscopy (SEM) and the microstructure was analyzed by transmission electron microscopy (TEM) The material has a cage-type mesoporous structure. At the same time, the mesoporous material was applied to the chromatographic separation. The separation of four mixtures of chlorobenzene, styrene, stilbene and biphenyl was carried out. Compared with other silica materials, KI T-5-150 synthesized under the best separation conditions.