▎ 摘　　要

NOVELTY - Preparing denitrification catalyst comprises (a) dispersing silver precursor, zinc precursor, and support compound in a solvent, (b) ball milling the dispersion and (c) drying the ball milled dispersion followed by calcining. USE - The catalyst is useful for selective catalytic reduction reaction for reducing nitrogen oxides by using carbon monoxide and/or hydrocarbons in exhaust gas as a reducing agent (all claimed). ADVANTAGE - The catalyst: improves the reduction rate of nitrogen oxides; The method: is economical, simple and harmless; improves efficiency of catalyst; can reduces air pollutants, global environment gases, acid rain causing substances and carcinogenic substance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for denitration catalyst prepared by above mentioned. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating method for preparing denitration catalyst (Drawing includes non-English language text).