화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.24, No.6, 645-649, December, 2013
Export Citation
W/TiO2 촉매의 NH3 단독 산화 반응 특성 연구
A Study on the Reaction Characteristics of the NH3 Oxidation over W/TiO2
김거종, 이상문, 홍성창1, †
  • 경기대학교 일반대학원 환경에너지시스템공학과
  • 1경기대학교 환경에너지시스템공학과
Geo Jong Kim, Sang Moon Lee, and Sung Chang Hong1, †
  • Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University, Gyeonggi-do 442-760, Korea
  • 1Department of Environmental Energy Systems Engineering, Kyonggi University, Gyeonggi-do 442-760, Korea
E-mail:
초록
본 연구에서는, 화력발전소 및 소각로 후단에서 발생되는 NH3를 제어하기 위한 W/TiO2 촉매의 NH3 산화 반응 특성연구를 수행하였다. 그 결과, W/TiO2 촉매의 텅스텐 최적함량은 10 wt% 임을 도출하였으며, 그 이상의 텅스텐을 담지할 경우 비표면적의 감소로 인한 효율저하를 확인하였다. 또한, NH3 주입농도가 420 ppm 이상으로 주입될 경우 중ㆍ저온의 온도구간에서 효율저하를 나타냈으며, 수분이 존재할 경우 경쟁흡착으로 인한 효율저하가 발생하였고 산소농도가 증가할수록 NH3의 전환율은 우수해지지만 N2의 선택도가 낮아짐을 확인하였다.
In this study, we investigated the NH3 oxidation reaction characteristic over W/TiO2 catalyst in order to control NH3 generated from a thermoelectric power plant or incinerator. As a result, it was found that the optimal content of tungsten in W/TiO2 catalyst is 10 wt% and NH3 removal efficiency decreased due to decreasing specific surface areas of catalyst with increasing tungsten contents. When NH3 was injected more than 420 ppm, NH3 conversion decreased at the middle temperature range. In addition, NH3 conversion decreased due to the competitive adsorption of moisture and with increasing oxygen concentration, the NH3 conversion increased while the N2 selectivity decreased.
Keywords:W;TiO2;catalyst;NH3;Selectivity Catalytic Oxidation
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