以无机铝盐Al(NO₃)₃为原料, 以乙二胺和聚乙二醇为协同模板导向剂, 与氨水反应, 经过“沉淀-超声-煅烧”等过程, 制得介孔纳米氧化铝. 用TEM, XRD, N₂吸附-脱附等测试技术对样品进行了测试和表征. 研究结果表明, 所得样品具有相当高的比表面积(510 m²•g^－1)、较大孔容(1.13 cm³•g^－1)和较为集中的孔径(5.8 nm)分布. 根据乙二胺和氧化铝表面的溶液化学反应及在不同pH条件下的溶液组分分布, 探讨了它们在介孔氧化铝制备过程中的协同模板作用机理.

Nano-scale mesoporous alumina powder (γ-Al₂O₃) was synthesized by a precipitation-ultrasonic treatment-calcination method using aluminum nitrate and ammonia solution as raw materials and ethyl diamine (EDA)/polyethyleneglycol (PEG) as co-template agents. The samples were characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), N₂ adsorption-desorption and acid-base titration methods. The results showed that the samples can be transformed into nano-sized mesoporous γ-Al₂O₃ with needle or rodlike morphology, centralized pore size distribution and stable structure. The average pore size, pore volume and specific surface area of the obtained sample were 5.8 nm, 1.13 cm³•g^－1 and 510 m²•g^－1 respectively. A co-templating mechanism of EDA and PEG in the synthesis of mesoporous alumina was discussed based on the chemical reactions and speciation of EDA and alumina surfaces as a function of pH in aqueous solution.