SUPPORTED CATALYST OF PLATINUM GROUP METAL, METHOD OF PRODUCING TREATED WATER REMOVED OF HYDROGEN PEROXIDE BY DECOMPOSING THE SAME, METHOD OF PRODUCING TREATED WATER REMOVED OF DISSOLVED OXYGEN, AND METHOD OF WASHING ELECTRONIC PARTS

摘要

PROBLEM TO BE SOLVED: To provide a high performance catalyst capable of decomposing/removing hydrogen peroxide or of removing dissolved oxygen even if water is allowed to flow therethrough at such a high SV of higher than 2,000 h-1and even if the height of a packed bed of the catalyst is made low. SOLUTION: The supported catalyst of platinum group metal includes nanoparticles of platinum group metal of a mean diameter of 1 to 100 nm supported by a porous organic anion exchanger. The porous organic anion exchanger includes three dimensionally continuous skeletons formed of aggregating organic polymer particles of a mean diameter in a water-wet state of 1 to 50μm and three dimensionally continuous pores of a mean diameter in a water-wet state of 20 to 100μm disposed between the skeletons, has a total pore volume of 1 to 5 ml/g and an anion exchanging capacity per volume in a water-wet state of 0.3 to 1.0 mg equivalent/ml, and contains anion exchanging groups uniformly distributed therein, with the platinum group metal supported thereby in an amount in a dry state of 0.004 to 20 wt.%. COPYRIGHT: (C)2010,JPO&INPIT