이석현 김종식 2024-01-19T12:00:52Z 2024-01-19T12:00:52Z 2022-06-30 2022-06 1226-976X https://pubs.kist.re.kr/handle/201004/115129 It is widely accepted that Sb oxide promotes redox cycling feature and SO2 resistance of a catalyst utilized for selective catalytic NOX reduction (SCR) at low temperatures (≤300 ℃). However, promotive roles of Sb oxide have never been explored with the alteration of its crystal phases, which can be crucial to direct the overall acidic/redox characteristics and SCR performance of a catalyst along with its SO2 tolerance. In this regard, while implementing TiO2-supported Mn oxide (Mn) as a model catalyst, we successfully isolated Sb2O3 and Sb2O5 on Mn using wet impregnation and precipitation protocols, leading to produce Mn-Sb-I and Mn- Sb-P, respectively. The resulting catalysts were verified to have comparable acidic properties, yet, exhibit distinct redox traits, as evidenced by the greatest quantity of labile oxygens for Mn-Sb-I (Sb2O3) compared to Mn and Mn-Sb-P (Sb2O5). This leads to significant enhancement of SCR performance and SO2 resistance for Mn-Sb-I over the others. Korean The Korean Ceramic Society 질소산화물의 선택적 환원을 위한 안티모니 산화물 조촉매들의 표면특성 탐구 Inspecting Promotive Functions of Antimony Oxides for NH3-Assisted Selective Catalytic NOX Reduction Article 10.31613/ceramist.2022.25.2.04 2 Ceramist, v.25, no.2, pp.159 - 171 Ceramist 25 2 159 171 N kci other ART002849568 Sb O Sb O NO reduction redox cycling SO resistance