Abstract: A method for preparation for mesoporous oxide comprising a non silica oxide having a hexagonal pore structure periodicity and an average maximum pore length of from 2 nm to 5 nm, characterized by comprising blending 0.003 mol to 0.01 mol of TaCl5, NbCl5 or a mixture thereof and Al isopropoxide comprising 10 g of an aliphatic linear alcohol and 1 g of a template compound to prepare a mixture for forming a sol solution, adding 5 mol to 35 mol (based on the metal compounds) of water or an aqueous inorganic acid solution to the mixture followed by hydrolysis and polycondensation to give a sol solution, transferring the sol into an oxygen containing atmosphere followed by again at 40° C. to 100° C. to form a gel, and then calcinating the gel in an oxygen containing atmosphere at 350° C. to 550° C.; and the mesoporous oxide obtained by the method.

Abstract: A meso porous transition metal oxide comprising one or more transition metal oxides, wherein the metal is selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ru, Cd, In, Sn, Sb, Hf, Ta, W and Re, and the pore wall of the meso pore thereof has a crystalline structure; and a method for preparing the meso porous transition metal oxide, characterized as comprising a step of carrying out a secondary calcination at 600-800° C. for 10 minutes to 10 hours.

Abstract: The present invention is the method for preparation of transition metal oxide having micro-mesoporous structure whose average fine pores size is not less than 1 nm and not more than 2 nm comprising, adding and dissolving transition metal salt which is a precursor of transition metal oxide and/or metal alkoxide in the solution prepared by dissolving polymer surfactant in organic solvent, hydrolyzing said transition metal salt and/or metal alkoxide and preparing sol solution which is polymerized and self organized, then obtaining gel whose organization is stabilized from said sol solution and removing said polymer surfactant by using water of room temperature or water to which alkali metal or alkaline earth metal ion is added.

Abstract: The present invention is the method for preparation of transition metal oxide having micro-mesoporous structure whose average fine pores size is not less than 1 nm and not more than 2 nm comprising, adding and dissolving transition metal salt which is a precursor of transition metal oxide and/or metal alkoxide in the solution prepared by dissolving polymer surfactant in organic solvent, hydrolyzing said transition metal salt and/or metal alkoxide and preparing sol solution which is polymerized and self organized, then obtaining gel whose organization is stabilized from said sol solution and removing said polymer surfactant by using water of room temperature or water to which alkali metal or alkaline earth metal ion is added.

Abstract: A method for preparation for mesoporous oxide comprising a non silica oxide having a hexagonal pore structure periodicity and an average maximum pore length of from 2 nm to 5 nm, characterized by comprising blending 0.003 mol to 0.01 mol of TaCl5, NbCl5 or a mixture thereof and Al isopropoxide comprising 10 g of an aliphatic linear alcohol and 1 g of a template compound to prepare a mixture for forming a sol solution, adding 5 mol to 35 mol (based on the metal compounds) of water or an aqueous inorganic acid solution to the mixture followed by hydrolysis and polycondensation to give a sol solution, transferring the sol into an oxygen containing atmosphere followed by again at 40° C. to 100° C. to form a gel, and then calcinating the gel in an oxygen containing atmosphere at 350° C. to 550° C.; and the mesoporous oxide obtained by the method.

Abstract: A photo-catalyst comprising of oxynitride of at least one transition metal and oxynitride of transition metal further containing at least one element selected from the group consisting of alkali, alkali earth and IIIB group. Especially, the transition metal contained in said photo-catalyst comprising of oxynitride of transition metal is selected from the group consisting of La, Ta, Nb, Ti and Zr, and further containing metal is selected from the group consisting of Ca, Sr, Ba, Na, K and Rb. Desirably, a promoter comprising Pt or Ni is loaded on said oxynitride of transition metal.

Abstract: A photo-catalyst comprising of oxynitride of at least one transition metal and oxynitride of transition metal further containing at least one element selected from the group consisting of alkali, alkali earth and IIIB group. Especially, the transition metal contained in said photo-catalyst comprising of oxynitride of transition metal is selected from the group consisting of La, Ta, Nb, Ti and Zr, and further containing metal is selected from the group consisting of Ca, Sr, Ba, Na, K and Rb. Desirably, a promoter comprising Pt or Ni is loaded on said oxynitride of transition metal.