Effect of the addition of Ce to MnOx/Ti catalyst on reduction of N2O in low‐temperature SCR. Issue 6 (11th June 2014)

• Record Type: Journal Article
• Authors: Shang, Tong; Hui, Shien; Niu, Yanqing; Liang, Ling; Liu, Changchun; Wang, Denghui
• Is Part Of: Asia-Pacific journal of chemical engineering. Volume 9:Issue 6(2014:Nov./Dec.)
• Page Start: 810
• Page End: 817
• Publication Date: 2014-06-11
• Subjects: Chemical engineering -- Periodicals; 660
• DOI: 10.1002/apj.1826
• Languages: English
• ISSNs: 1932-2135

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>The effect of MnO<italic>_x</italic>/Ti catalyst doped with Ce prepared by sol–gel method at a low temperature on N₂O formation during the selective catalytic reduction of NO with NH₃ was studied in detail. Results showed that the production of N₂O was primarily controlled by two paths: (1) direct reaction of NO and NH₃ and (2) oxidation of NH₃ with O₂. The overoxidation of NH₃ was the dominant step in N₂O reduction. Addition of Ce to MnO<italic>_x</italic>/Ti catalyst increased the proportion of lattice oxygen on the catalyst surface. Meanwhile, the stability of lattice oxygen, which contributed to the decrease in N₂O formation by inhibiting the overoxidation of NH₃, on the catalyst surface was the best when the Ce/Ti mole ratio reached 0.1. © 2014 Curtin University of Technology and John Wiley &amp; Sons, Ltd.</p> </abstract>