Patent ID: 6511642
Filing Date: 2003-01-28
Classification: B01D,B01J,Y02T

Abstract:
A porous material, comprising:particles without substantial fibrous structure; wherein said porous material has pores; wherein the pores have a mean pore diameter in a meso-pore region; wherein at least a part of the pores are connected three-dimensionally to form a three-dimensional network structure with random passages; wherein said particles are alumina, and the three-dimensional network structure has a spongy structure; and wherein said porous material is obtained by precipitating at least a part of an aluminum component from an aluminum salt aqueous solution at a pH of 3 to 4.5, to obtain a precipitate, aging the aqueous solution containing the precipitate in saturated vapor or nearly saturated vapor for a prescribed period of time to produce a precursor, and calcining the precursor.