中国电机工程学报Issue(18)：4690-4696,7.DOI:10.13334/j.0258-8013.pcsee.2015.18.015
磁性γ-Fe2O3催化剂NH3-SCR脱硝反应动力学研究
Kinetic Study of Selective Catalytic Reduction of NOxby NH3on Magneticγ-Fe2O3Catalyst
摘要
Abstract
ABSTRACT:Magneticγ-Fe2O3 catalysts were prepared by precipitation. The effect of NH3 and O2 on selective catalytic reduction (SCR) was investigated through the switching off and on method. And the intrinsic kinetics model for magneticγ-Fe2O3catalyst was built in the absence of internal and external diffusion by the way of steady-state dynamics. NH3 is absorbed and activated quickly on the active sites of catalyst surface; the adsorption of NO and the formation of its active transition species is the rate-determining step of SCR; the SCR reaction is promoted by O2 when it is less than 1%. It is also found that on the test condition the SCR reaction order with respect to NO, NH3, O2is 0.41,0 and 0.27 respectively, but the reaction order with respect to O2is 0 When O2 exceeds 1%.The derived apparent activation energy of magneticγ-Fe2O3 catalysts is 28.77 kJ/mol, which is much lower than the apparent activation energy of Vanadium titanium base catalyst.关键词
脱硝/选择性催化还原(SCR)/磁性γ-Fe2O3/动力学/活化能Key words
DeNOx/selective catalytic reduction (SCR)/magneticγ-Fe2O3/kinetics/apparent activation energy分类
能源科技引用本文复制引用
彭建升,王栋,张信莉,路春美,牛胜利,李婧,徐丽婷..磁性γ-Fe2O3催化剂NH3-SCR脱硝反应动力学研究[J].中国电机工程学报,2015,(18):4690-4696,7.基金项目
国家自然科学基金项目(51276101)；高等学校博士学科点专项科研基金项目(20120131110022)；山东大学基本科研业务费专项资金项目(2015JC024)。Project Supported by National Natural Science Foundation of China(51276101) （51276101）
The Specialized Research Fund for the Doctoral Program of Higher Education of China(20120131110022) （20120131110022）
The Fundamental Research Funds of Shandong University(2015JC024) （2015JC024）
