DENITRATION CATALYST, METHOD OF PREPARING THE SAME, AND METHOD OF DENITRATION

摘要

PROBLEM TO BE SOLVED: To provide a denitration catalyst capable of obtaining a highly active catalyst, efficiently processing a nitrogen oxide (NOX) in an exhaust gas, and in particular effectively affecting the processing of exhaust gas generated from a gas-fired boiler and a gas turbine.;SOLUTION: A denitration catalyst including a composite oxide of titanium and tungsten (hereinafter, referred to as a Ti-W composite oxide) or a composite oxide of titanium, silicon, and tungsten (hereinafter, referred to as a Ti-Si-W composite oxide) satisfies the conditions: (1) To measure the desorption amount of ammonia at 250 to 350°C by ammonia temperature rise desorption measurement (NH₃-TPD) (L-desorption amount), (2) to measure the desorption amount of ammonia at 450 to 550°C by ammonia temperature rise desorption measurement (NH₃-TPD) (H desorption amount), and (3) to set H desorption amount/L-desorption amount at 0.7 to 1.5.;COPYRIGHT: (C)2013,JPO&INPIT