均一沈殿法により調製した亜鉛を含む含水酸化スズ (IV) からのZn₂SnO₄の生成

抄録

Preparation of precipitates for obtaining Zn₂SnO₄ is examined by the homogeneous precipitation method in which SnCl₄, ZnCl₂ and (CH₂)₆N₄ are used. The precipitation becomes difficult with increasing concentration of SnCl₄ and decreasing ratio of (CH₂)₆N₄ to SnCl₄. The homogeneous precipitation method becomes difficult to apply with increasing ratios of ZnCl₂ to SnCl₄ and of (CH₂)₆N₄ to SnCl₄. The amount of zinc contained in the obtained precipitate increases with increasing ratios of ZnCl₂ to SnCl₄ and of (CH₂)₆N₄ to SnCl4. The precipitate obtained is SnO₂ with poor crystallinity and contains zinc. Heating at 700°C resulted in the mixture of ZnO, SnO₂ and Zn₂SnO₄. The amount of zinc in the calcined material which dissolves into 2N HCl solution increases with increasing calcining temperature.