One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO 2 on SiO 2 for Dry Reforming of Methane

Chengyang Zhang, Renkun Zhang, Hui Liu, Qinhong Wei, Dandan Gong, Liuye Mo, Hengcong Tao, Sha Cui and Luhui Wang
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Chengyang Zhang: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Renkun Zhang: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Hui Liu: School of Food and Pharmaceutical, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Qinhong Wei: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Dandan Gong: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Liuye Mo: Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Hengcong Tao: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Sha Cui: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China
Luhui Wang: Department of Chemical Engineering, School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China

Energies, 2020, vol. 13, issue 22, 1-12

Abstract: Sintering and carbon deposition are the two main ways to deactivate Ni-based catalysts during methane reforming. Herein, a stable Ni-CeO 2 /SiO 2 (CSC) catalyst was prepared by a one-step colloidal solution combustion method (CSC) and used for dry reforming of methane. In the catalyst, the small Ni particles were confined by CeO 2 particles and highly dispersed on the surface of SiO 2 , forming a spatial confinement structure with a rich Ni-CeO 2 interface in the catalyst. The Ni-CeO 2 /SiO 2 (CSC) catalyst prepared by the one-step CSC method exhibited superior activity at 700 °C during dry reforming of methane, and the performance of the catalyst was stable after 20 h of reaction with only a small amount of carbon deposition present (1.8%). Due to the spatial confinement effect, Ni was stable and less than 5 nm during reaction. The small Ni particle size and rich Ni-CeO 2 interface reduced the rate of carbon deposition. This colloidal combustion method could be applied to prepare stable metal-based catalysts with rich metal–oxide interfaces for high-temperature reactions.

Keywords: dry reforming of methane; Ni; carbon deposition; colloidal solution combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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