Mechanochemical Nitrous Oxide Decomposition

Nitrous oxide (N<sub>2</sub>O) is one of the top three greenhouse gases, together with carbon dioxide and methane, but it is stable enough not to be easily decomposed under thermocatalytic conditions, even at high temperature (445 °C). Herein, an efficient N<sub>2</sub>O decomposition method is reported using nickel oxide catalyst under mechanochemical conditions operated near ambient temperature. The mechanochemical N<sub>2</sub>O decomposition method exhibited a rapid reaction rate of 1761.3 mL h<sup>-1</sup> and a high conversion of 99.98% even at 42 °C, compared to the thermochemical method (294.9 mL h<sup>-1</sup> and 49.16% at 445 °C). Unlike equilibrium thermocatalytic states, the non-equilibrium mechanocatalytic states induced by intensive dynamic mechanochemical actions are responsible for effective N<sub>2</sub>O decomposition under mild temperature conditions.

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Publication Details

Journal
Advanced Materials
Published
2025-09-26
DOI
https://doi.org/10.1002/adma.202511666
Primary Topic
Catalytic Processes in Materials Science
Type
article
Field-Weighted Citation Impact
0.00

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article

Mechanochemical Nitrous Oxide Decomposition

Jong‐Beom Baek, Qing Jiang, Gao‐Feng Han, Xingyou Lang et al.
Advanced Materials
Catalytic Processes in Materials Science
article

Mechanochemical Nitrous Oxide Decomposition

Jong‐Beom Baek, Qing Jiang, Gao‐Feng Han, Xingyou Lang, Se Jung Lee, Yung Sam Kim, Ayeon Kim, Jeong‐Min Seo, Runnan Guan, Li‐Bo Chen, Changqing Li, Jianhong Li, B. Z. Jang, Jae Seong Lee, Seung‐Hyeon Kim, Yanhua Shao, Jae‐Hoon Baek
article en

Abstract

Nitrous oxide (N<sub>2</sub>O) is one of the top three greenhouse gases, together with carbon dioxide and methane, but it is stable enough not to be easily decomposed under thermocatalytic conditions, even at high temperature (445 °C). Herein, an efficient N<sub>2</sub>O decomposition method is reported using nickel oxide catalyst under mechanochemical conditions operated near ambient temperature. The mechanochemical N<sub>2</sub>O decomposition method exhibited a rapid reaction rate of 1761.3 mL h<sup>-1</sup> and a high conversion of 99.98% even at 42 °C, compared to the thermochemical method (294.9 mL h<sup>-1</sup> and 49.16% at 445 °C). Unlike equilibrium thermocatalytic states, the non-equilibrium mechanocatalytic states induced by intensive dynamic mechanochemical actions are responsible for effective N<sub>2</sub>O decomposition under mild temperature conditions.

Advanced MaterialsVol. 38(2)
Jilin University (CN), Ulsan National Institute of Science and Technology (KR), Korea Institute of Industrial Technology (KR)
National Research Foundation, National Research Foundation of Korea, Ministry of Science and ICT, South Korea
Openalex Percentile: Top 80%
Catalytic Processes in Materials Science
DOIOpen Access PDFOpenAlex
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