节点文献

溶胶-凝胶法制备具有碱激发活性的无定形Al₂O₃-2SiO₂粉体

Preparation of Amorphous Al₂O₃-2SiO₂ Powders with Alkali-Activation Property by Sol-Gel Method

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 Zheng Guangjian1,2,Cui Xuemin1,Zhang Weipeng1,Tong Zhangfa1(1.School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)(2.Department of Chemistry,Guangxi Teachers Education University,Nanning 530001,China)

【机构】广西大学化学化工学院；广西大学化学化工学院广西南宁530004广西师范学院化学系；广西南宁530001；广西南宁530004；

【摘要】以正硅酸乙酯(TEOS)和水合硝酸铝(ANN)为原料,采用溶胶-凝胶法合成了无定形Al2O3-2SiO2粉体。通过XRD与FT-IR对其无定形相结构进行了表征,发现其结构与偏高岭土相似。为了考察粉体的碱激发活性,用SiO2/Na2O摩尔比为1.2的硅酸钠溶液对其进行碱激发试验,结果表明合成的无定形Al2O3-2SiO2粉体具有碱激活性,3d抗压强度达到24MPa。更多还原

【Abstract】 Amorphous Al2O3-2SiO2 powders were synthesized by sol-gel method,with tetraethoxysilane(TEOS) and aluminum nitrate ninahydrate(ANN) as the starting material.The microstructure of the powders was investigated by XRD and FT-IR analysis.In order to examine the activity of the powder,alkali-activation tests were performed.The powders react with the sodium silicate solution with SiO2/Na2O mole ratio of 1.2.The results show that the synthetic powders have alkali-activation property,whose compressive strength reaches 24 MPa for 3d,and its microstructure is similar to that of metakaolin.更多还原