Microwave Irradiation Coupled with MeOx/Al2O3 (Me=Cu,  Mn,  Ce) Catalysts for Nitrogen Monoxide Removal from Flue Gas at Low Temperatures. Issue 7 (20th May 2016)

• Record Type: Journal Article
• Authors: Xu, Wentao; Cai, Jinjun; Zhou, Jicheng; You, Zhimin; Su, Zhiming; Shi, Ni; Ou, Yingpiao
• Is Part Of: Energy technology. Volume 4:Issue 7(2016:Jul.)
• Page Start: 856
• Page End: 863
• Publication Date: 2016-05-20
• Subjects: aluminum oxide -- catalysis -- ceria -- flue-gas scrubbing -- metallic oxides; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201500538
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract: The direct catalytic decomposition of nitrogen monoxide (NO) into nitrogen (N2 ) and oxygen (O2 ) with high efficiency remains a significant challenge at low temperatures under excess oxygen conditions. Herein, we report the direct decomposition of NO by microwave‐assisted catalysis over metal oxide catalysts MeO x /Al2 O3 (Me=Cu, Mn, Ce) for the first time under these conditions. The CeCuMnO x /Al2 O3 catalyst displays an impressively high efficiency with a high NO conversion and N2 selectivity, reaching up to 94.8 % and 98.7 %, respectively, even at a low temperature of 250 °C and oxygen excess of 10 %. Moreover, the cerium‐doped MeO x /Al2 O3 (Me=Cu, Mn) catalysts enhance the catalytic performance dramatically, and CeCuMnO x /Al2 O3 is more active than CeCuO x /Al2 O3 and CeMnO x /Al2 O3 under microwave irradiation. Comparatively, these catalysts show extremely low catalytic activity under conventional reaction conditions. Furthermore, the catalytic performance of NO decomposition under microwave irradiation is hardly influenced by the oxygen concentration. Abstract : NO means NO : The authors report the direct decomposition of nitrogen monoxide (NO) by microwave‐assisted catalysis over metal oxide catalysts MeO x /Al2 O3 (Me=Cu, Mn, Ce) for the first time at low temperatures and with excess oxygen. The CeCuMnO x /Al2 O3 catalyst displays an impressively high efficiency even at a low temperature of 250 °C and oxygen excess of 10 %.