최희락 유창용 하헌필 2024-01-20T17:03:00Z 2024-01-20T17:03:00Z 2021-09-06 2011-05 1225-7591 https://pubs.kist.re.kr/handle/201004/130368 The influence of sulfate on the selective catalytic reduction of NO_x on the Ag/Al_2O_3 catalyst was studied when CH_4 was used as a reducing agent. Various preparation methods influenced differently on the deNO_x activity. Among the methods, cogelation precipitation gave best activity. When sulfates were formed on the surfaces of samples prepared by impregnated and deposition precipitation, deNO_x activity was enhanced as long as suitable forming condition is satisfied. The major sulfate formed in Ag/Al_2O_3 catalyst was the aluminum sulfate and it seems that this sulfate acted as a promoter. When Mg was added to the Ag/Al_2O_3 catalyst it promoted deNO_x activity at high temperature. Intentionally added sulfate also enhanced deNO_x activity, when their amount was confined less than 3 wt%. Korean 한국분말야금학회 메탄에 의한 Ag/Al_2O_3 촉매의 선택적 탈질 환원촉매반응에서 탈질전환율에 미치는 황화물 형성의 영향과 Mg첨가 효과 The Effects of Sulfate Formation and Mg Addition on the Selective Catalytic Reduction of NO_x with CH_4 on Ag/Al_2O_3 Catalysts Article 2 한국분말야금학회지, v.18, no.2, pp.159 - 167 한국분말야금학회지 18 2 159 167 kci ART001546512 Ag/Al_2O_3 Sulfur poisoning DeNO_x Selective catalytic reduction Mg sulfate