以无水三氯化铝和四氯化钛为前驱体,以无水醇为氧供体通过非水解溶胶-凝胶法制备钛酸铝凝胶.应用TGDTA、xRD和FT-IR等测试手段研究了凝胶热处理过程中的相变化以及非水解溶胶-凝胶的反应过程.结果表明:无水乙醇和无水异丙醇作氧供体制备的凝胶可在750℃直接合成钛酸铝,并且用无水乙醇作氧供体合成钛酸铝的效果优于无水异丙醇.反应过程中形成了大量的异质聚合产物Al-O-Ti,表明钛酸铝凝胶转化过程中发生了非水解反应,这也是低温合成钛酸铝的关键所在.
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