Characterization of niobium-zirconium mixed oxide as a novel catalyst for selective catalytic reduction of NO x
438 - 449
Item Usage Stats
The performance of mixed niobium-zirconium oxide in the SCR of NO x with propene in excess oxygen has been studied. The mixed oxide is prepared by impregnation of hydrated zirconia with acidic solution (pH 0.5) of peroxoniobium(V) complex, [Nb2(O2)3] 4+, ensuring ZrO2:Nb2O5 mole ratio of 6:1. The calcined sample (denoted as 25NbZ-P) has the structure of Zr 6Nb2O17. According to the catalytic test, the conversion of NO x over the 25NbZ-P catalyst passes through a maximum at 220 °C. Based on the in situ FT-IR results, a reaction mechanism is proposed with nitroacetone and NCO species as the key reaction intermediates. The results of the investigation show that the catalytic properties of the Zr6Nb2O17 solid solution could be of interest regarding the development of low-temperature catalyst for the SCR of NO x with hydrocarbons. © 2009 Springer Science+Business Media, LLC.
KeywordsC3H6-SCR of NO x
In situ FT-IR spectroscopy
Zirconia-niobia solid solution
C<sub>3</sub>H<sub>6</sub>-SCR of NO <sub>x</sub>
SCR of NO
Selective catalytic reduction of NO
Selective catalytic reduction
Published Version (Please cite this version)http://dx.doi.org/10.1007/s10562-009-0150-5
Showing items related by title, author, creator and subject.
Karatok, M.; Vovk, E. I.; Koc, A. V.; Ozensoy, E. (American Chemical Society, 2017)Ammonia-selective catalytic oxidation was studied on the planar Ag(111) single-crystal model catalyst surface under ultra-high-vacuum (UHV) conditions. A variety of oxygen species were prepared via ozone decomposition on ...
Say, Z.; Mihai, O.; Tohumeken, M.; Ercan, K. E.; Olsson, L.; Ozensoy, E. (Royal Society of Chemistry, 2017)Advanced quaternary mixed oxide materials in the form of BaO/Al2O3/ZrO2/TiO2 functionalized with Pt active sites (i.e. Pt/BaO/AZT) were synthesized and structurally characterized via XRD and BET in comparison to a ...
Multifunctional electrospun polymeric nanofibrous mats for catalytic reduction, photocatalysis and sensing Arslan, O.; Uyar, Tamer (Royal Society of Chemistry, 2017)Fabrication and decoration of flexible Nylon 6,6 polymeric nanofibrous mats for production of multifunctional electrospun material was accomplished via visible light-emitting surface-protected silicon quantum dots (Si QD), ...