| abstract |
It is 5～40m that the present invention provides one to comprise specific surface area 2 The absorbing material of the absorption active substance of/g.And, the present invention provides a kind of and adsorbs by the preparation method of active substance, it is characterised in that including: step (a), one in calcium carbonate, brium carbonate, magnesium carbonate, aluminium carbonate or strontium carbonate is carried out acid treatment, thus cation selective is eluted；Step (b), extracts the above-mentioned cation eluted；And step (c), it is sintered selected from the one extracted in the calcium carbonate of above-mentioned cation, brium carbonate, magnesium carbonate, aluminium carbonate or strontium carbonate. |