DOI: 10.1016/j.jcou.2018.01.004
Scopus记录号: 2-s2.0-85040311859
论文题名: Development of a powerful CO2 methanation process using a structured Ni/CeO2 catalyst
作者: Ratchahat S. ; Sudoh M. ; Suzuki Y. ; Kawasaki W. ; Watanabe R. ; Fukuhara C.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 210
结束页码: 219
语种: 英语
英文关键词: CO2 methanation
; Honeycomb
; Ni/CeO2
; Structured catalyst
Scopus关键词: Carbon dioxide
; Catalyst activity
; Catalysts
; Cerium compounds
; Honeycomb structures
; Hydrogenation
; Methanation
; Nickel
; Feed flow rate
; Gap distances
; Honeycomb
; Inlet temperature
; Metallic honeycomb
; Ni/CeO2
; Reaction conditions
; Structured catalyst
; Nickel compounds
英文摘要: The purpose of this study is to develop a powerful CO2 methanation process using a variety of structured Ni/CeO2 catalysts. Various configurations of metallic honeycomb-type catalysts, which are plain, stacked, segment, and multi-stacked were constructed and tested under various reaction conditions; i.e. inlet temperature, feed flow rate and CO2 partial pressure. Effects of the developed configurations including stack and gap distance were examined. The random-flow channels of stacked type and the gap distance of segment type could improve the catalytic activity, resulting in high CO2 conversion. Under industrial-like high feed rate condition and pure feed gas component, a moderate hot spot over the multi-stacked catalyst was observed and reported for the first time. The moderate hot spot reboosted the conversion to a high level even at high feed flow rate condition of 3000 mL/min (contact time of 235 ms). As a result, high CO2 conversion > 90%, high CH4 selectivity > 99.5%, and high stability with dropped conversion < 0.6%, could be maintained over 76 h test at setting temperature of 300 °C, flow rate of 3000 mL/min and feed ratio of pCO2/ pH2=0.12/0.88. The stability of the Ni/CeO2 catalyst under the moderate hot spot condition was revealed by BET, SEM and XRD analyses. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111940
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Amano Institute of Technology, 7955-98 Hosoe-cho Kiga, Kita-ku, Hamamatsu, Shizuoka 431-1305, Japan; Department of Applied Chemistry and Biochemical Engineering, Graduate School of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan
Recommended Citation:
Ratchahat S.,Sudoh M.,Suzuki Y.,et al. Development of a powerful CO2 methanation process using a structured Ni/CeO2 catalyst[J]. Journal of CO2 Utilization,2018-01-01,24