Investigation of cyclohexane catalytic degradation driven by N atoms from N<sub>2</sub> discharges

Yuying LI; Jiacheng XU; Chunle ZHANG; Shuiliang YAO; Jing LI; Zuliang WU; Erhao GAO; Jiali ZHU

doi:10.1088/2058-6272/ac8a40

Plasma Science and Technology > 2023 > 25(2): 025502. > DOI: 10.1088/2058-6272/ac8a40

Yuying LI, Jiacheng XU, Chunle ZHANG, Shuiliang YAO, Jing LI, Zuliang WU, Erhao GAO, Jiali ZHU. Investigation of cyclohexane catalytic degradation driven by N atoms from N₂ discharges[J]. Plasma Science and Technology, 2023, 25(2): 025502. DOI: 10.1088/2058-6272/ac8a40

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Investigation of cyclohexane catalytic degradation driven by N atoms from N₂ discharges

Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry, School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, People's Republic of China

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Corresponding author:
Shuiliang YAO, E-mail: yaos@cczu.edu.cn

Jing LI, E-mail: lijing_831@cczu.edu.cn
Received Date: May 29, 2022
Revised Date: August 04, 2022
Accepted Date: August 15, 2022
Available Online: December 05, 2023
Published Date: January 05, 2023

Graphical Abstract

Abstract

Abstract

The effect of N₂ discharge products on cyclohexane degradation over a MnO₂/γ-Al₂O₃ catalyst has been evaluated by feeding N₂ discharge products to the catalyst using a specially designed dielectric barrier discharge reactor. At a reaction temperature of 100 ℃, the cyclohexane conversion increased from 2.46% (without N₂ discharge products) to 26.3% (with N₂ discharge products). N- and O-containing by-product (3, 4-dehydroproline) was found on the catalyst surface using gas chromatograph-mass spectrometry identification, in which C=N–C and C=N–H bonds were also confirmed from x-ray photoelectron spectroscopy analysis results. Operando analysis results using diffuse reflectance infrared Fourier transform spectroscopy revealed that N atoms can react with surface H₂O possibly to NH and OH reactive species that have reactivities to promote CO oxidation to CO₂. The mechanism of N-atom-driven cyclohexane degradation to CO and CO₂ is proposed.
- N₂ discharge,
- N atom,
- ion current,
- MnO₂,
- cyclohexane degradation

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Acknowledgments

This research was supported by National Natural Science Foundation of China (No. 12075037), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX21_2873) and Research and Application Service Platform Project of API Manufacturing Environmental Protection and Safety Technology in China (No. 2020-0107-3-1).

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