Multi-core@Shell catalyst derived from LDH@SiO2 for low- temperature dry reforming of methane

Zhoufeng Bian, Shaobi Deng, Zhenkun Sun, Tianshu Ge, Bo Jiang and Wenqi Zhong

Renewable Energy, 2022, vol. 200, issue C, 1362-1370

Abstract: In this paper, a multi-core@shell catalyst LDH@SiO2 was fabricated by coating a silica layer over hexagonal Ni–Mg–Al LDH nanoplates. After calcination and H2-reduction, Ni nanoparticles were well dispersed on the support, as well as encapsulated within the mesoporous silica shell. The multi-core@shell catalyst was then tested in low temperature dry reforming of methane (DRM) at 600 °C and showed a stable CH4 conversion of 27% for 16 h time on stream. Characterizations of the spent catalyst indicated that there was almost no carbon formation and the multi-core@shell structure was well preserved. While the pristine layered double hydroxide (LDH) catalyst exhibited a severe carbon formation as 68%. The confinement effect conveyed by the unique multi-core@shell structure effectively suppressed metal sintering and carbon deposition. Besides, the thickness of the silica shell was tuned and it made a great difference to the catalytic activity due to the diffusion resistance.

Keywords: Low temperature DRM; H2 production; Multi-core@shell; Carbon resistance; Confinement effect (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:200:y:2022:i:c:p:1362-1370

DOI: 10.1016/j.renene.2022.10.046

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