Mineralization agent NH4F was used to regulate shape of the powder so as to lower the amount of bohemite needle crystals and form flake-shape powder;
用矿化剂NH_4F调节粉体的形状，使粉体中薄水铝石针状晶的数目降低并形成对调节载体孔结构有利的片状粉体；
Mineralization agent NH4F was used to regulate shape of the powder so as to lower the amount of bohemite needle crystals and form flake-shape powder;
用矿化剂NH_4F调节粉体的形状，使粉体中薄水铝石针状晶的数目降低并形成对调节载体孔结构有利的片状粉体；
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