A New Method of Synthesis of Nanosized Boehmite (AlOOH) Powders with a Low Impurity Content

摘要

A new method of synthesis of nanosized aluminum oxyhydroxide (AlOOH, boehmite) powders has been suggested through a hydrothermal treatment of nanosized -Al2O3 powder in water and a 1.5 wt % HCl solution at different temperatures. It has been found that hydrothermal treatment in a 1.5 wt % HCl solution leads to the purification of the starting material; different treatment durations allow one to obtain boehmite particles of different shape. It has been demonstrated that a nanosized boehmite powder is obtained upon the hydrothermal treatment of a nanosized -Al2O3 in water above 80 degrees C. The nanosized boehmite powders synthesized at different temperatures have been studied by various methods.