DOI: 10.1016/j.jcou.2018.03.011
Scopus记录号: 2-s2.0-85044368526
论文题名: Intrinsic kinetics of CO2 methanation over an industrial nickel-based catalyst
作者: Miguel C.V. ; Mendes A. ; Madeira L.M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 25 起始页码: 128
结束页码: 136
语种: 英语
英文关键词: Carbon dioxide
; Kinetics
; Methanation
; Nickel catalyst
; Sabatier reaction
; SNG
Scopus关键词: Association reactions
; Atmospheric pressure
; Carbon
; Carbon dioxide
; Catalysts
; Chemical reactors
; Enzyme kinetics
; Heat resistance
; Hydrogenation
; Kinetics
; Methanation
; Nickel
; Reaction rates
; Equilibrium conditions
; Experimental conditions
; Model discrimination
; Nickel based catalysts
; Nickel catalyst
; Sabatier reaction
; Statistical significance
; Thermodynamic consistency
; Reaction kinetics
英文摘要: The intrinsic kinetics of CO2 methanation over an industrial nickel-based catalyst was determined for a temperature range between 250 °C to 350 °C. The kinetic experiments were performed operating an integral fixed-bed reactor far from equilibrium conditions, in the absence of heat and mass resistances and at the atmospheric pressure. Five mechanistic-based models for describing the reaction kinetics were taken from literature and used for fitting the experimental reaction rates. Model discrimination was based on the assessment of the thermodynamic consistency and statistical significance of inherent parameters (for 95% confidence level). Comparison of the adequacy of fit between accepted models was done through the determination of the corresponding F-values to select the best model. The selected model assumes a formyl intermediate mechanism with a hydroxyl group being the most abundant species. The proposed reaction kinetics was further validated by the simulation of an isothermal plug-flow reactor operating at the same experimental conditions employed in this work, where a reasonable agreement between model predictions and the observed values was obtained. © 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/111919
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, Porto, 4200-465, Portugal
Recommended Citation:
Miguel C.V.,Mendes A.,Madeira L.M.. Intrinsic kinetics of CO2 methanation over an industrial nickel-based catalyst[J]. Journal of CO2 Utilization,2018-01-01,25