DENITRATION CATALYST

摘要

PURPOSE:To provide a denitration catalyst usable in a reduction reaction of NOx in an atmosphere contg. excess oxygen with hydrocarbon as a reducing agent and capable of selective conversion of NOx into N2. CONSTITUTION:Platinum is carried by 0.05-5wt.% on a carrier consisting of 5-30wt.% (expressed in terms of diboron trioxide) boron, 10-30wt.% (expressed in terms of silicon dioxide) silicon and the balance alumina and having >=200m<2>/g specific surface area measured by a nitrogen adsorption method. The selective NOx reduction activity of the resulting catalyst is considerably improved and the production of N2O as a by-product can completely be inhibited.