Transformation behavior of gibbsite to boehmite by steam-assisted synthesis

The treated temperature and time were the main factor determining the transformation of morphologies and crystal phase of gibbsite to boehmite. Boehmite was appeared at 165 °C and 12 h for the SAC method but not at 165 °C and 12 h for the hydrothermal method. The SAC method is more efficient than the hydrothermal method.237