Platinum group metal supported catalyst, process for producing treated water decomposition of hydrogen peroxide, the method of preparation and cleaning electronic parts removing treated water of dissolved oxygen

摘要

PROBLEM TO BE SOLVED: To provide a high-performance catalyst allowing decomposition removal of hydrogen peroxide and removal of dissolved oxygen even when water is passed at a high SV higher than 2,000 h^-1 and the height of the packed bed of the catalyst is reduced.;SOLUTION: A platinum-group metal supported catalyst includes nano-particles of a platinum-group metal supported in an organic porous anion exchange material, and the organic porous anion exchange material is a composite structure of an organic porous material which includes a continuous backbone phase and a continuous pore phase and a large number of grains of diameters of 4-40 m adhered to the surface of the backbone of the organic porous material or a large number of protrusions of sizes of 4-40 m formed on the surface of the backbone of the organic porous material and has an average diameter of pores of 10-150 m, a total volume of pores of 0.5-5 ml/g and an anion exchange capacity per volume of at least 0.2 mg equiv./ml in a water-wetted state. Anion exchange groups are distributed uniformly in the composite structure. The nano-particles of the platinum-group metal of an average particle size of 1-100 nm are supported in a wt.% of 0.004-20 in a dry state.;COPYRIGHT: (C)2011,JPO&INPIT