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A preparation method of large pore alumina, particularly the alumina which has pore size larger than 1000 A0 and the pore volume is more than 15% of the overall volume, which comprises simultaneously mixing sodium aluminate, nitric acid and active carton and generating precipitation, in which the active carbon is 1 to 20 weight%; after filtration, the precipitate is washed by water several times and washed 1% aqueous nitric solution; the product is then dried at 100 to 120 DEG C and calcined in air at 550 to 580 DEG C.
TW82109405A1993-11-091993-11-09Preparation methods of large pore alumina
TW231286B
(en)