▎ 摘　　要

NOVELTY - Nitrogen/metal doped graphene mercury removing catalyst comprises 30-60% nitrogen, 10-15% metal and 25-60% graphene, where the catalyst is nanocomposite material. USE - Used as nitrogen/metal doped graphene mercury removing catalyst. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nitrogen/metal doped graphene mercury removing catalyst, comprising (i) mixing aluminum nitrate, platinum nitrate and deionized water according to a certain mass ratio to prepare a first mixed solution, (ii) mixing ammonium carbonate, aqueous ammonia, ammonium molybdate and deionized water according to a certain mass ratio to prepare second mixed solution, (iii) mixing the first mixed solution and the second mixed solution into the third mixed solution according to volume ratio of 1:15-20, placing the third mixed solution in a crucible, stirring under uniform velocity, then drying the crucible in 80-110 degrees C oven for 10-15 hours, placing the crucible in 300-400 degrees C muffle furnace, roasting and grinding to obtain platinum-molybdenum/aluminum oxide powder, (iv) placing the platinum-molybdenum/aluminum oxide powder in quartz tube in a tubular furnace, filling nitrogen with the flow speed of 20-50 sccm, heating the tubular furnace to 500-550 degrees C and changing the flow speed of the nitrogen to 20-30 sccm, introducing hydrogen at flow rate of 20-30 sccm, keeping the temperature at 500-550 degrees C for 30-40 minutes, stopping filling the hydrogen, heating the tubular furnace at a speed of 8-12 degrees C/minute to 700-750 degrees C, changing the nitrogen flow rate to 40-60 sccm, recovering the hydrogen, where the flow speed is 8-12 sccm, introducing ethylene gas at the flow speed of 20-30sccm for 150-200 minutes, stopping heating, stopping inletting the hydrogen and the ethylene gas, introducing nitrogen at flow speed of 40-60 sccm, and naturally cooling to room temperature to obtain the solid mixture, (v) mixing the solid mixture with urea, grinding, placing in a tubular furnace for heat treatment, and cooling to room temperature.