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采用溶胶-凝胶法合成了介孔纳米γ-Al2O3,以透射电镜(TEM),X射线衍射(XRD)比表面测定(BET)等技术,对所得的介孔纳米γ-Al2O3进行了表征。考察了不同条件下制备的介孔纳米γ-Al2O3在静态吸附条件下对磷酸根离子的吸附性能。实验结果表明,选择1g/L的溴化十六烷基三甲铵作为分散剂,在pH=4.1、陈化48h、煅烧550℃、保温3h的条件下制备的介孔纳米γ-Al2O3的比表面为551.8m2/g,其对磷酸根离子的吸附性能较好。
Mesoporous nano-γ-Al2O3 was synthesized by sol-gel method. The mesoporous nano-γ-Al2O3 was characterized by transmission electron microscopy (TEM) and X-ray diffraction (BET) The adsorption properties of phosphate ions on mesoporous nano-γ-Al2O3 prepared under different conditions were investigated. The experimental results showed that the specific surface area of mesoporous nanosized γ-Al2O3 prepared with 1 g / L cetyltrimethylammonium bromide as dispersant and pH = 4.1, aged for 48h, calcined at 550 ℃ for 3h, For 551.8m2 / g, its adsorption of phosphate ions better.