▎ 摘　　要

NOVELTY - Zirconium boride auxiliary denitration and desulfurization catalyst comprises 19.41-24.45 wt.% diatomite-graphene, 57.93-65.65 wt.% nano-nickel oxide, 4.09-5.77 wt.% metal oxide additives, 3.29-4.16 wt.% surfactant, 2.24- 3.08 wt.% cross linking agent and 4.28-4.96 wt.% enhancers. The preparation of desulfurization and denitration catalyst comprises using diatomaceous earth-graphene as a carrier, mixing diatomaceous earth-graphene with particles, sintering at 150 degrees C for 3 hours, and supporting nano-sized nickel oxide on a carrier to form a complex oxide active carrier. USE - The catalyst is useful for catalyzing simultaneous removal of nitrogen and sulfur oxides catalyze at temperatures below 300 degrees C (claimed). ADVANTAGE - The catalyst improves removal rates of catalytic nitrogen and sulfur oxides respectively at more than 92 or 96%. DETAILED DESCRIPTION - Zirconium boride auxiliary denitration and desulfurization catalyst comprises 19.41-24.45 wt.% diatomite-graphene, 57.93-65.65 wt.% nano-nickel oxide, 4.09-5.77 wt.% metal oxide additives, 3.29-4.16 wt.% surfactant, 2.24- 3.08 wt.% cross linking agent and 4.28-4.96 wt.% enhancers. The preparation of desulfurization and denitration catalyst comprises using diatomaceous earth-graphene as a carrier, mixing diatomaceous earth-graphene with particles, sintering at 150 degrees C for 3 hours, and supporting nano-sized nickel oxide on a carrier to form a complex oxide active carrier, where composite oxide active carrier is loaded with a metal oxide promoter as a catalyst auxiliary agent.The catalyst is reacting at 160-250 degrees C to remove nitrogen oxides and sulfur oxides when ammonia vapor is used as an absorbent at ratios of 92% and 96%, respectively, where metal oxide additive is zirconium boride and mass ratio of diatomite and graphene is 1:1. An INDEPENDENT CLAIM is also included for preparing zirconium boride auxiliary denitration and desulfurization catalyst, comprising (i) preparing nano-nickel oxide, diatomaceous earth-graphene, and metal oxide additives using a mature process; (ii) dissolving 85-125 pts. wt. tetrabutyl titanate in anhydrous ethanol applying sol-gel method, where amount of anhydrous ethanol is 4 ml for one pts. wt. tetrabutyl titanate, stirring, adding 10-12 pts. wt. diethanolamine as an inhibitor, delaying the strong hydrolysis of tetrabutyl titanate, continuously stirring, adding distilled water drop wise until a colorless transparent solution is obtained, taking 30-40 pts. wt. diatomaceous earth-graphene, adding into the above solutions, stirring to form tetratitanic acid nickel oxide produced by hydrolysis of butyl ester, loading onto diatomite-graphene, adding 6-7 pts. wt. metal oxide additive, stirring mixture, carrying out suction filtering, drying, placing obtained solid powder in a muffle furnace, calcining, cooling, pulverizing again and fixing powdery composite catalyst material on diatomaceous earth-graphene; and (iii) taking preliminary powdered composite catalyst is obtained from the mixing process, adding surfactants, cross-linking agents, reinforcing agents, pure ammonia and deionized water, where weight ratio of powdered composite catalysts, surfactants, cross linkers and reinforcing agents are 88.49-89.28 wt.%, 3.53-3.57 wt.%, 2.65-3.54 wt.% and 4.45-5.31 wt.%, respectively and amount of pure ammonia water and deionized water corresponding to the initial amount of powdered composite catalyst is 0.5-1 ml, respectively, carrying out clay refining, vacuum refining, aging under constant temperature and humidity conditions, molding, drying, sintering in the tunnel kiln and drying completely to obtain rubble paper denitrification catalyst.