以正硅酸乙酯、硝酸铝和氟化铝为原料,采用溶胶一凝胶法在多孔莫来石陶瓷载体上原位反应烧结合成了晶须状多孔莫来石陶瓷膜.考察了在1 200,1 300,1 400,1 500℃烧成温度、保温2 h后对莫来石相及其膜层表面微观结构的影响.结果发现:在烧成温度为1 300℃时出现了莫来石相,并随着烧成温度的升高,莫来石相的特征峰增强;在氟化铝质量分数为10%、1 500℃保温2 h条件下,膜层表面生长出长为2.5μm、宽为0.5 μm、长径比(长/宽)为5的莫来石晶须,并且此时形成的莫来石晶须比较均匀,莫来石陶瓷膜平均孔径为0.75μm左右,纯水通量为725 L/(m2·h).
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