DOI: 10.1016/j.jcou.2018.07.017
Scopus记录号: 2-s2.0-85051849968
论文题名: High carbon resistant Ni@Ni phyllosilicate@SiO2 core shell hollow sphere catalysts for low temperature CH4 dry reforming
作者: Li Z. ; Jiang B. ; Wang Z. ; Kawi S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 238
结束页码: 246
语种: 英语
英文关键词: Carbon resistance
; core shell hollow spheres
; Low temperature CH4 dry reforming
; Ni@Ni phyllosilicate@SiO2
Scopus关键词: Carbon dioxide
; Carbon nanotubes
; Greenhouse gases
; Hydraulic structures
; Iron compounds
; Magnesium compounds
; Methane
; Nickel coatings
; Reforming reactions
; Shells (structures)
; Silica
; Sintering
; Spheres
; Synthesis gas manufacture
; Temperature
; Yarn
; Carbon dioxide reforming of methane
; Carbon resistances
; Dry reforming
; Hollow sphere
; Nickel nanoparticles
; Phyllosilicate
; Structured materials
; TEM characterization
; Nickel compounds
英文摘要: Carbon dioxide reforming of methane (DRM) reaction has been widely explored since it is a sustainable process to transform carbon dioxide and methane which are the main greenhouse gases to value added synthesis gas. Herein, Ni@Ni phyllosilicate@SiO2 core shell hollow spheres (Ni@NiPhy@SiO2 HS) with high carbon resistance for DRM at 600 °C (10.4% weight loss after 50 h reaction) have been designed. Additionally, it also showed stable and high conversions (82.5% and 78.4% for carbon dioxide and methane respectively) and carbon resistance (5.5% weight loss) for DRM reaction at 700 °C within the testing time of 600 h. By contrast, for Ni@NiPhy without SiO2 shell, tremendous carbon nanotubes (CNTs) formed for DRM at 600 °C, even though it is interesting to find that there is slight nickel sintering. TPO-MS, H2-TPR, XPS and TEM characterizations showed that the interactions between nickel nanoparticles and NiPhy materials were increased due to the coating of SiO2 shell which also confined nickel and inhibited detaching of nickel from the surface of Ni@NiPhy@SiO2, which eliminates the accumulation of carbon to become CNTs. The synthesis method for core shell HS provides numerous opportunities to design other structured materials such as Ni-M (M = Co, Fe, Mg)@SiO2 HS for the efficient utilization of greenhouse gases through environmentally sustainable processes. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111775
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
Recommended Citation:
Li Z.,Jiang B.,Wang Z.,et al. High carbon resistant Ni@Ni phyllosilicate@SiO2 core shell hollow sphere catalysts for low temperature CH4 dry reforming[J]. Journal of CO2 Utilization,2018-01-01,27