DOI: 10.1016/j.jcou.2016.03.004
Scopus记录号: 2-s2.0-84962745695
论文题名: In-situ hydrogasification/regeneration of NiAl-hydrotalcite derived catalyst in the reaction of CO2 reforming of methane: A versatile approach to catalyst recycling
作者: Abdelsadek Z. ; Sehailia M. ; Halliche D. ; Gonzalez-Delacruz V.M. ; Holgado J.P. ; Bachari K. ; Caballero A. ; Cherifi O.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 14 起始页码: 98
结束页码: 105
语种: 英语
英文关键词: Catalyst regeneration
; Dry reforming of methane
; Hydrogasification
; Hydrotalcite
Scopus关键词: Absorption spectroscopy
; Atomic absorption spectrometry
; C (programming language)
; Carbon dioxide
; Catalysts
; Electron microscopy
; Fourier transform infrared spectroscopy
; High resolution transmission electron microscopy
; Methane
; Precipitation (chemical)
; Scanning electron microscopy
; Thermogravimetric analysis
; Transmission electron microscopy
; X ray diffraction
; Atomic absorption spectroscopy
; Brunauer emmett tellers
; Coprecipitation method
; Dry reforming-of-methane
; Hydrogasification
; Hydrotalcites
; Reforming of methane
; Temperature-programmed reduction
; Catalyst regeneration
英文摘要: A novel approach describing the in-situ regeneration of NiAl hydroalcite derived catalyst between two cycle reaction systems of CO2 reforming of methane, also known as dry reforming of methane (DRM) is described herein. The catalyst was initially prepared by co-precipitation method at pH = 11 and calcined at 450°C for 6 h. The obtained material was characterized using X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET), atomic absorption spectroscopy (AAS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetry (TG/ATD) and temperature programmed reduction (TPR-H2) techniques. Following treatment of our catalyst under DRM conditions, the catalyst was subjected to in-situ hydrogasification conditions to promote regeneration followed by a second DRM cycle. An increase of 15.7% in the conversion of CH4 and 17.3% in the conversion of CO2 was attained, while the ratio of resulting H2/CO augmented by 14%. The ratio of H2 consumed over the course of two hours hydrogasification, to that generated over ten hours of DRM, was 9.6%. The small particle sizes of resulting Ni°species as well as their high stability were both key factors contributing to the increase in the amount of H2/CO produced prior to and after regeneration. © 2016 Elsevier Ltd. All rights reserved. 资助项目: Ministry of Higher Education and Scientific Research
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52923
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Abdelsadek Z.,Sehailia M.,Halliche D.,et al. In-situ hydrogasification/regeneration of NiAl-hydrotalcite derived catalyst in the reaction of CO2 reforming of methane: A versatile approach to catalyst recycling[J]. Journal of CO2 Utilization,2016-01-01,14