Catalytic decomposition of N2O over cobalt based spinel oxides: The role of additives

Min Jae Kim; Seung Jae Lee; In Soo Ryu; Min Wook Jeon; Seung Hyun Moon; Hyun Seog Roh; Sang Goo Jeon

doi:10.1016/j.mcat.2017.05.029

Catalytic decomposition of N₂O over cobalt based spinel oxides: The role of additives

Min Jae Kim, Seung Jae Lee, In Soo Ryu, Min Wook Jeon, Seung Hyun Moon, Hyun Seog Roh, Sang Goo Jeon

Division of Environmental Engineering

Research output: Contribution to journal › Review article › peer-review

35 Citations (Scopus)

Abstract

Catalytic activity at temperature below 400 °C for N₂O decomposition was investigated over catalysts based on cobalt oxide synthesized by a co-precipitation and impregnation method. The characteristics of the catalysts were assessed by XRD, BET, H₂-TPR, O₂-TPD, and XPS techniques, and the catalytic activity for N₂O decomposition was examined in the presence of O₂ and H₂O. In general, it was observed that the catalytic activity was enhanced by the increase of surface area and redox ability of the catalyst. In particular, the N₂O conversion of K/Co₃O₄ was notably higher than that of pure Co₃O₄, while the Co-CeO₂ catalyst slightly improved the activity. The K/Co-CeO₂ catalyst decomposed 100% of N₂O at 375 °C reaction temperature without O₂ and H₂O in the reaction gas stream, and this value was lowered to 95.7% with the presence of O₂ and H₂O.

Original language	English
Pages (from-to)	202-207
Number of pages	6
Journal	Molecular Catalysis
Volume	442
DOIs	https://doi.org/10.1016/j.mcat.2017.05.029
Publication status	Published - 2017 Dec

Bibliographical note

Publisher Copyright:
© 2017

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Access to Document

10.1016/j.mcat.2017.05.029

Cite this

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title = "Catalytic decomposition of N2O over cobalt based spinel oxides: The role of additives",

abstract = "Catalytic activity at temperature below 400 °C for N2O decomposition was investigated over catalysts based on cobalt oxide synthesized by a co-precipitation and impregnation method. The characteristics of the catalysts were assessed by XRD, BET, H2-TPR, O2-TPD, and XPS techniques, and the catalytic activity for N2O decomposition was examined in the presence of O2 and H2O. In general, it was observed that the catalytic activity was enhanced by the increase of surface area and redox ability of the catalyst. In particular, the N2O conversion of K/Co3O4 was notably higher than that of pure Co3O4, while the Co-CeO2 catalyst slightly improved the activity. The K/Co-CeO2 catalyst decomposed 100% of N2O at 375 °C reaction temperature without O2 and H2O in the reaction gas stream, and this value was lowered to 95.7% with the presence of O2 and H2O.",

author = "Kim, {Min Jae} and Lee, {Seung Jae} and Ryu, {In Soo} and Jeon, {Min Wook} and Moon, {Seung Hyun} and Roh, {Hyun Seog} and Jeon, {Sang Goo}",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

month = dec,

doi = "10.1016/j.mcat.2017.05.029",

language = "English",

volume = "442",

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T1 - Catalytic decomposition of N2O over cobalt based spinel oxides

T2 - The role of additives

AU - Kim, Min Jae

AU - Lee, Seung Jae

AU - Ryu, In Soo

AU - Jeon, Min Wook

AU - Moon, Seung Hyun

AU - Roh, Hyun Seog

AU - Jeon, Sang Goo

PY - 2017/12

Y1 - 2017/12

N2 - Catalytic activity at temperature below 400 °C for N2O decomposition was investigated over catalysts based on cobalt oxide synthesized by a co-precipitation and impregnation method. The characteristics of the catalysts were assessed by XRD, BET, H2-TPR, O2-TPD, and XPS techniques, and the catalytic activity for N2O decomposition was examined in the presence of O2 and H2O. In general, it was observed that the catalytic activity was enhanced by the increase of surface area and redox ability of the catalyst. In particular, the N2O conversion of K/Co3O4 was notably higher than that of pure Co3O4, while the Co-CeO2 catalyst slightly improved the activity. The K/Co-CeO2 catalyst decomposed 100% of N2O at 375 °C reaction temperature without O2 and H2O in the reaction gas stream, and this value was lowered to 95.7% with the presence of O2 and H2O.

AB - Catalytic activity at temperature below 400 °C for N2O decomposition was investigated over catalysts based on cobalt oxide synthesized by a co-precipitation and impregnation method. The characteristics of the catalysts were assessed by XRD, BET, H2-TPR, O2-TPD, and XPS techniques, and the catalytic activity for N2O decomposition was examined in the presence of O2 and H2O. In general, it was observed that the catalytic activity was enhanced by the increase of surface area and redox ability of the catalyst. In particular, the N2O conversion of K/Co3O4 was notably higher than that of pure Co3O4, while the Co-CeO2 catalyst slightly improved the activity. The K/Co-CeO2 catalyst decomposed 100% of N2O at 375 °C reaction temperature without O2 and H2O in the reaction gas stream, and this value was lowered to 95.7% with the presence of O2 and H2O.

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