FeCeOx with improved activity for catalytic reduction of NO with NH3. (July 2020)

• Record Type: Journal Article
• Authors: Wang, Li; Wang, Junbo; Liu, Xiaona; Chen, Yaxin; Cheng, Heping; Wu, Yabin; Peng, Hui; Ma, Zhen
• Is Part Of: Journal of physics and chemistry of solids. Volume 142(2020)
• Publication Date: 2020-07
• Subjects: SCR -- FeCeOx -- CeO2 -- Fe doping -- Promotional effect; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2020.109472
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: An FeCeOx solid solution with an Fe/Ce molar ratio of 1 was obtained via a modified sol-gel method. The promotional effect of Fe 3+ ions in the lattice of cubic CeO2 for catalytic reduction of NO with NH3 was studied. The NO conversion over the FeCeOx catalyst was obviously higher than those over CeO2 and Fe2 O3 catalysts. FeCeOx was characterized by using XRD, TEM, and XANES, etc. The experimental results revealed that Fe substituted Ce in CeO2 to form an Fe–O–Ce solid solution with high activity for catalytic reduction of NO. The atomic and electric structures of the FeCeOx catalyst were studied to explain the enhanced catalytic activity. Highlights: FeCeOx solid solution was obtained via a modified sol-gel method. Catalytic reduction of NO with NH3 can be enhanced. FeCeOx was characterized by using XRD, TEM, and XANES, etc. Atomic and electric structures were studied to explain the enhanced activity.