Synthesis of fine powder of tin oxide

Abstract

Abstract PURPOSE:To obtain fine powder of tin oxide having improved dispersibility and high surface energy simply and inexpensively, by adding an alkali solution to a solution of a tin salt in an organic solvent to form precipitate, separating the precipitate, heat-treating it. CONSTITUTION:A tin salt soluble in an organic solvent is dissolved in the organic solvent, an alkali is added to the organic solvent solution, the tin salt is hydrolyzed, and precipitate is formed. The precipitate is separated from a mother liquor, dried, heat-treated at 300-1,200 deg.C, to give fine powder of tin oxide. Or, when the organic solvent solution is prepared, at least one of pentavalent or trivalent metal compounds soluble in the organic solvent together with the tin salt is dissolved in the organic solvent, so that the fine powder of tin oxide is provided with characteristics of metal element of its own. A tin halide, especially tin chloride is preferable as the tin salt soluble in the organic solvent used in terms of economic reasons.

Inventors

• 👤 Kunio Otsuka
• 👤 大塚　邦夫
• 👤 Mitsuru Suda
• 👤 充 須田
• 👤 Masa Yonezawa
• 👤 米沢　政

Bibliographic Details