| 摘要 |
An adsorbent which adsorbs water in a large amount, and can desorb water easily even at a relatively low temperature, and an adsorbent that is excellent in the adsorption amount and adsorption properties by applying a porous organic-inorganic complex are provided. A water adsorbent using a porous organic-inorganic complex is characterized in that the adsorbent has a surface area of not less than 1000 m^2/g, a pore volume of not less than 1.0 ml/g and a pore size of 0.5 to 2 nm, and is obtained by the reaction between a metal precursor and a ligand. A ratio of the water adsorption amount at 100 deg.C to that at a room temperature of the porous organic-inorganic complex is less than 0.2. The metal precursor is at least one metal selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mg, Ca, Sr, Ba, Sc, Y, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, Sb and Bi, or compounds thereof. The porous organic-inorganic complex is prepared by a method comprising the steps of: (1) mixing a metal precursor, an organic material functioning as a ligand, and a solvent to prepare a reactant mixed solution; and (2) irradiating 0.3 to 300 GHz of microwave onto the reactant mixed solution, thereby heating the reactant mixed solution to a temperature or 100 deg.C or more. The porous organic-inorganic complex is prepared in the form of a thick film, a thin film, or a membrane. |
