水和四チタン酸カリウムから合成した層状チタン酸マグネシウムカリウムの水和

摘要

Two kinds of hydrate phases, Hydrate I and II, were obtained in water by soaking the magnesium potassium titanate (K_(0.8)Mg_(0.4)Ti_(1.6)O_4, KMT) that was synthesized from hydrous potassium tetratitanate. As interlayer potassium ions were replaced by water molecules and oxonium ions, the distance between the host crystal layers increased. The interlayer distances of Hydrate I and II were 0.884 ma and 1.130 nm, respectively. The empirical formulae of Hydrate I and II were K_(0.30)H_(0.50)Mg_(0.4)Ti_(1.6)O_4 centre dot 0.94H_2O and H_(0.80)Mg_(0.4)Ti_(1.6)O_4 centre dot 2.46H_2O, respectively.