DOI: 10.1016/j.jcou.2016.12.014
Scopus记录号: 2-s2.0-85014178983
论文题名: Highly carbon-resistant Ni-Co/SiO2 catalysts derived from phyllosilicates for dry reforming of methane
作者: Bian Z. ; Kawi S.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 18 起始页码: 345
结束页码: 352
语种: 英语
英文关键词: Carbon-resistance
; Dry reforming of methane
; Nickel-cobalt alloy
; Phyllosilicates
Scopus关键词: Catalyst activity
; Catalysts
; Catalytic oxidation
; Cobalt alloys
; Cobalt deposits
; Methane
; Silicates
; Sintering
; Urea
; Carbon resistances
; Catalytic performance
; Dry reforming-of-methane
; Hydrothermal methods
; Metal-support interactions
; Nickel cobalt alloys
; Phyllosilicates
; Synthesis and characterizations
; Nickel
英文摘要: This paper describes synthesis and characterization of Ni and Ni-Co alloy supported over SiO2 derived from phyllosilicates. A series of 10 wt% Ni-Co phyllosilicate supported over SiO2 with different Ni/Co ratio is successfully prepared by hydrothermal method where urea is used to release ammonia gradually providing a basic environment. TPR results show that adding of Co enhances the metal-support interaction. After H2 reduction at high temperature, small and uniform Ni-Co alloy particles are well supported over silica. These catalysts are tested for dry reforming of methane (DRM) at 750 °C. The catalytic performance is highly affected by Ni/Co ratio: 10Ni and 7Ni3Co show high and stable activity for 100 h, whereas 5Ni5Co, 3Ni7Co and 10Co exhibit severe deactivation due to oxidation of metal sites. A harsher test has shown that adding of Co with a proper amount indeed can help to suppress metal sintering and carbon formation. © 2017 Elsevier Ltd. All rights reserved. 资助项目: China Scholarship Council
; National Eczema Association
; Fédération pour la Recherche sur le Cerveau
; National Eczema Association
; National Research Foundation of Korea
; National University of Singapore
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52768
Appears in Collections: 影响、适应和脆弱性