Aluminum oxyhydroxide (AIO(OH)) nano platelets were prepared through a hydrothermal reaction of gamma-Al(2)O(3) particles and a diluted CH(3)COOH solution. In the hydrothermal reaction process, a reversible reaction between gamma-Al(2)O(3) and aluminum oxyhydroxide occurred, and the hydrothermal reaction temperature, hydrothermal reaction time, CH(3)COOH concentration and the Al(2)O(3)/H(2)O ratio had an effect on a crystal structure, surface chemical properties, specific surface area, pore characteristics and crystal morphology of the aluminum oxyhydroxide nano platelets. In this study, the hydrothermal reaction conditions of the aluminum oxyhydroxide nano platelets for used as a catalyst support, a heat resisting agent, adsorbent, binder, polishing agent and a coating agent were investigated. The crystal structure, specific surface area, pore volume and the pore size of the aluminum oxyhydroxide nano platelets were investigated by XRD, TEM, TG/DTA, FT-IR and the N(2) BET method at liquid nitrogen temperature.

Keywords: Aluminum oxyhydroxide; gamma-Al(2)O(3); Platelet alumina; Catalyst support; Coating materials