| 摘要 |
PCT No. PCT/KR95/00110 Sec. 371 Date Feb. 24, 1997 Sec. 102(e) Date Feb. 24, 1997 PCT Filed Aug. 29, 1995 PCT Pub. No. WO96/06675 PCT Pub. Date Mar. 7, 1996A photocatalyst for the preparation of hydrogen consisting of a catalytically active ingredient, cesium (Cs), impregnated in a support, K4Nb6O17, represented by Formula I as follows:Cs (a) /K4Nb6O17wherein a is an amount of the catalytically active ingredient impregnated in the support and has a value of between 0.05 to 5.0% by weight based on total weight of the support. Such a catalyst is prepared by combining K2CO3 with Nb2O5 in a mole ratio of 2:3; sintering the combination at a temperature of about 1,200 DEG -1,300 DEG C. to produce the support, K4Nb6O17; and impregnating the support with the catalytically active ingredient, Cs. Hydrogen is efficiently produced by illuminating an ultraviolet light on an aqueous solution added with an oxygen-containing organic promoter at a reaction temperature of about 15 DEG -80 DEG C., under a reaction pressure of about 0.1-3.0 atm, in the presence of the photocatalyst.
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