Intrinsic Kinetics of V-W-Ti-Si/ Cordierite Catalyst for Diesel Engine Denitrification
1. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China;
2. College of Environmental Science & Engineering, Nankai University, Tianjin 300701, China
Abstract：The V-W-Ti-Si/cordierite self-made catalyst were using to study the NH3-SCR（NH3-selective catalytic reduction）process of diesel engine on the basis of eliminating the influence of internal and external diffusion by using a fixed-bed reactor. The power exponential denitrations reaction kinetic model was established, and the model parameters were determined by linear fitting method. The results showed that the reaction order of NO, NH3 and O2 in the NH3-SCR reaction were 0.93, 0, 0.24 respectively. The activation energy of the catalyst was 25.99 kJ/mol. The relative error of the model fitting was around 10%. It can be used to guide diesel engine exhaust denitrification catalyst reaction process research and development.
