The prerequisite of covering of aluminum hydrous oxide, obtained by the hydrolysis of acldic alumimum salts in the present of urea, on pre-existing spheric polystyrene particles is that surface of pre-existing particl...
The rehydration of several α-Al2O3 has been investigated by means of XRD,DTA, TG and nitrogen adsorption methods. It is found that all α-Al2O3 samples arecapable of rehydration at 250℃ and under saturated pressure....