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以TiCl4和无水AlCl3为原料,以无水低碳醇为氧供体通过非水解溶胶–凝胶法低温合成了钛酸铝,研究了无水低碳醇种类及用量对钛酸铝合成反应的影响。结果表明:当氧供体按反应式化学计量比用量加入时,在750℃能合成出钛酸铝,其中以乙醇的合成效果最好,异丙醇次之,正丁醇的效果较差;采用甲醇和叔丁醇作氧供体,由于它们的化学活性过大而引发水解反应,不能低温(750℃)合成钛酸铝。当醇用量超过化学计量比时,则合成效果显著下降;当醇用量低于化学计量比时,改变乙醇的用量对合成效果影响不明显,而减少异丙醇和正丁醇用量可显著提高钛酸铝的合成效果。
TiCl4 and anhydrous AlCl3 as raw materials, anhydrous lower alcohol as an oxygen donor by non-hydrolytic sol-gel synthesis of aluminum titanate, the type and amount of anhydrous lower alcohol alcohol aluminum titanate synthesis reaction Impact. The results show that when the oxygen donor is added in the reaction stoichiometric ratio, aluminum titanate can be synthesized at 750 ℃, the synthesis effect of ethanol is the best, isopropanol is the second, but the effect of n - butanol is poor. Methanol and tert-butanol are used as oxygen donors, and aluminum titanate can not be synthesized at a low temperature (750 ° C) due to their excessive chemical activity causing hydrolysis. When the amount of alcohol exceeds the stoichiometric ratio, the synthetic effect is significantly decreased; when the amount of alcohol is less than the stoichiometric ratio, the effect of changing the amount of ethanol on the synthesis effect is not obvious, while reducing the amount of isopropyl alcohol and n-butanol can significantly increase the titanic acid Aluminum synthesis effect.