Title :
Kinetic study for low-temperature SCR of NO with NH3 over Mn-Ce/TiO2 catalyst
Author :
Liu, Yang ; Weiping, Liao ; Fei, Wang
Author_Institution :
Nanjing Normal Univ., Nanjing, China
Abstract :
In this paper, the Mn-Ce/TiO2 catalyst prepared by co-precipitation, study the low temperature performance of selective catalytic reduction (SCR) NO of catalyst within the temperature range 333~433K with NH3 in presence of excess O2. Under ideal conditions, the study shows that when ratio of molar of catalyst Mn/(Mn+Ce) reach to 0.7, low temperature selective catalytic activity of catalyst will be the best. NO will be removal in more than 90% at 393K. Through steady-state kinetic experiments, the reaction of low temperature SCR of Mn-Ce/TiO2 catalyst is found to NO, NH3, O2 reaction order were 1, 0,0.5. By calculating, the activation energy of reaction of Mn-Ce/TiO2 catalyst is 40kJ/mol, which is lower than most of the reported activation energy of the catalyst reaction.
Keywords :
catalysis; catalysts; cerium; manganese; molecule-molecule reactions; nitrogen compounds; precipitation (physical chemistry); reaction kinetics; reduction (chemical); titanium compounds; Mn-Ce-TiO2; NH3; NO; activation energy; catalyst reaction; catalytic activity; coprecipitation; low-temperature selective catalytic reduction reaction; steady-state kinetic study; temperature 333 K to 433 K; Manganese; Titanium; Mn-Ce/TiO2; NO; co-precipitation; low-temperature; selective catalytic reduction;
Conference_Titel :
Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-749-8
DOI :
10.1109/ICMREE.2011.5930603
