TY - JOUR AU - 김우승 DA - 2008/06 PY - 2008 UR - http://www.dbpia.co.kr/Article/NODE01126668 UR - https://repository.hanyang.ac.kr/handle/20.500.11754/104591 AB - The steady- and unsteady-state kinetics of the selective catalytic reduction (SCR) of NOx with NH₃ has been investigated over a commercial V₂O?/TiO₂ catalyst. In order to account for the influence of transport effects the kinetics are coupled with a fully transient two-phase 1D+1D monolith channel model. The Langmuir-Hinshelwood (L-H) and Modified Redox (MR) mechanisms are adopted to describe the steady-state kinetic behavior of the V₂O?/TiO₂ catalyst, and their results are compared with each other. A Temkin-type kinetics is used to describe the ammonia adsorption/desorption rate. The reaction rate expressions are based on previously reported papers and are modified to fit the experimental data. The steady-state chemical reaction schemes used in the present mathematical model have been validated extensively with experimental data over a wide range of reaction temperatures. PB - 한국자동차공학회 KW - SCR(Selective Catalytic Reduction, 선택적 촉매환원) KW - NH₃(암모니아) KW - NOx(질소산화물) KW - Mathematical Modeling(수학적 모델링) KW - Steady-state Analysis(정상 상태 해석) KW - Transient-state Analysis(비정상 상태 해석) TI - 디젤엔진의 NOx 저감을 위한 SCR DeNOx 촉매의 정상 및 비정상 성능 해석 TT - Analysis of Steady and Unsteady Performance of SCR DeNOx Catalyst for Reducing NOx Emissions in Diesel Engine ER -