Patent ID: 8759245

Claim:
Porous organic-inorganic hybrid materials obtained according to a method which comprises: (1) preparing a reaction solution containing a mixture of a metal precursor, an organic compound which act as a ligand and a solvent; (2) heating the reaction solution to form porous organic-inorganic hybrid materials, wherein the porous organic-inorganic hybrid materials do not contain fluorine and include a hydrate represented by a formula of M 3 OH(H 2 O) 2 O[C 6 H 4 (CO 2 ) 2 ] 3 .nH 2 O(n˜25) (M is one metal selected from the group consisting of Fe, Cr, and V) or include a hydrate represented by a formula of M 3 O(H 2 O) 2 OH[C 6 H 3 —(CO 2 ) 3 ] 2 .nH 2 O(n˜14.5) (M is Fe); and (3) purifying the porous organic-inorganic hybrid materials obtained in the step (2) by treatment with an inorganic salt, wherein a surface area of the porous organic-inorganic hybrid materials obtained in the step (2) increases after the purifying process in the step (3), wherein hydrofluoric acid is not used during the steps (1)˜(3), wherein the reaction solution in the step (1) contains an inorganic acid except for hydrofluoric acid.