Title :
Removal of NOx using novel Fe-Mn-Ti compound catalysts at low temperature
Author :
Xu, Dong-yao ; Yang, Nan ; Dai, Xiang ; Zhou, Hao ; Chen, Xiao-chen ; Xu, Zhen-liang ; Yang, Qiao-wen
Author_Institution :
Sch. of Chem. & Environ. Eng., China Univ. of Min. &Technol., Beijing, China
Abstract :
The novel Fe-Mn-Ti compound catalysts were prepared by co-precipitation, based on the lower price and smaller surface area TiO2. Then the cause of high catalytic activity which was represented by the compound catalyst was discussed. X-ray diffraction (XRD) was used to characterize the active phase and its results showed that a new Fe0.33Mn0.05Ti2.52O5 phase was generated for Fe-MnOx-Ti. The Fe0.33Mn0.05Ti2.52O5 played a decisive role on the process of low-temperature SCR. However the effect of catalyst was not observed when the temperature was up to nearly 300° C. Based on the above statement, above 90% conversion of NOx on the Fe(0.5)-MnOx-Ti(400) (the molar ratio of n(Fe)/[n(Fe)+n (Mn)]=0.5 and calcined at 400ο C) was achieved among 180° C to 280° C.
Keywords :
X-ray diffraction; calcination; catalysis; catalysts; iron compounds; manganese compounds; precipitation; titanium compounds; Fe0.33Mn0.05Ti2.52O5; NOx removal process; X-ray diffraction; calcination process; coprecipitation process; high catalytic activity; low temperature condition; low-temperature SCR process; selective catalytic reduction; temperature 400 degC; Chemicals; Compounds; Iron; Manganese; Thyristors; X-ray diffraction; X-ray scattering; Fe-Mn-Ti compound catalyst; Low-temperature; Removal of NOx; Selective catalytic reduction (SCR);
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988588
