Synthesis of Bismuth(III) Oxohydroxolaurate
YURY M. YUKHIN, KONSTANTIN YU. MIKHAILOV, BORIS B. BOKHONOV and IRINA A. VORSINA
Institute of Solid State Chemistry and Mechanochemistry,
Siberian Branch of the Russian Academy of Sciences,
Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: yukhin@solid.nsk.su
Pages: 403-408
Abstract
Synthesis of bismuth(III) oxohydroxolaurate by the reaction of lauric acid with bismuth-containing perchlorate or nitrate solutions has been studied by X-ray phase analysis, thermogravimetric analysis, electron microscopy, IR spectroscopy, and chemical analysis. Conditions of the reaction forming bismuth laurate Bi6O4(OH)4R6, where R is the lauric acid anion, have been determined, and the solubility of the anion in organic solvents has been investigated. It is recommended that highly pure bismuth laurate should be synthesized from metallic bismuth by preliminary oxidation of the latter with atmospheric oxygen, dissolving the resulting Bi2O3 in nitric acid (1:1), and purifying bismuth from impurity metals by its precipitation in the form of oxohydroxolaurate by adding a solution of sodium laurate to the solution of bismuth nitrate at (60±10)oC (molar ratio HR:Bi = 1.0-1.1, concentration of free nitric acid in solution 0.1 mol/l).
|
