Understanding the Effect of NO Adsorption on Potassium-Promoted Co3O4 for N2O Decomposition

Co 3 O 4 and K/Co 3 O 4 were tested in catalytic N 2 O decomposition. K/Co 3 O 4 exhibited higher activity than Co 3 O 4 , which was drastically and irrecoverably decreased with added NO. Studies revealed that the Co 2+ valence state changed after NO adsorption, and that potassium strengthened the C...

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Bibliographic Details
Published in:Catalysis letters 2017-11, Vol.147 (11), p.2886-2892
Main Authors: Kim, Min-Jae, Lee, Seung-Jae, Ryu, In-Soo, Moon, Seung-Hyun, Jeon, Min-Wook, Ko, Chang Hyun, Jeon, Sang Goo
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Chemistry
Chemistry and Materials Science
Cobalt oxides
Decomposition
Industrial Chemistry/Chemical Engineering
Nitrous oxide
Organometallic Chemistry
Physical Chemistry
Potassium
Valence
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Summary:Co 3 O 4 and K/Co 3 O 4 were tested in catalytic N 2 O decomposition. K/Co 3 O 4 exhibited higher activity than Co 3 O 4 , which was drastically and irrecoverably decreased with added NO. Studies revealed that the Co 2+ valence state changed after NO adsorption, and that potassium strengthened the Co–NO bond, impeding NO desorption, even above 400 °C. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-017-2180-8