DOI: 10.1016/j.jcou.2013.10.003
Scopus记录号: 2-s2.0-84889087433
论文题名: Modeling and kinetic analysis of CO2 hydrogenation using a Mn and K-promoted Fe catalyst in a fixed-bed reactor
作者: Willauer H.D. ; Ananth R. ; Olsen M.T. ; Drab D.M. ; Hardy D.R. ; Williams F.W.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2013
卷: 2017-03-04 起始页码: 56
结束页码: 64
语种: 英语
英文关键词: CO2 hydrogenation
; Fixed-bed reactor
; GHSV (gas hourly space velocity)
; Kinetics
; Modeling
Scopus关键词: Beneficial effects
; Fixed-bed reactors
; Gas hourly space velocities
; Hydrogenation of CO
; Iron-based catalyst
; Rate-controlling steps
; Reverse water gas shift
; Unsaturated hydrocarbons
; Alumina
; Catalysts
; Chemical reactors
; Enzyme kinetics
; Hydrogenation
; Kinetics
; Methane
; Models
; Rate constants
; Synthesis (chemical)
; Water gas shift
; Carbon dioxide
英文摘要: Hydrogenation of CO2 to hydrocarbons is investigated over γ-alumina-supported modified iron-based catalysts under fixed-bed reactor conditions to produce unsaturated hydrocarbons as feedstock chemicals for jet-fuel synthesis. The results are compared to those obtained in a continuously stirred tank/thermal reactor (CSTR) environment. It is shown that the maximum C2-C5+ yield obtained in the fixed-bed experiments is 49% higher than those obtained by CSTR at lower gas hourly space velocity (GHSV) of 0.000093 liters per second gram (L/s-g). However, at much higher GHSV (0.0015 L/s-g), C2-C5+ yield is reduced by 47% in the fixed-bed environment. Modeling and kinetic analysis of the data obtained under fixed-bed reactor conditions is expanded upon by including the formation of methane as a by-product and providing kinetic constants. The results show that our Fischer-Tropsch (FT) reaction rate is much slower than the reverse water gas shift (RWGS) reaction rate. Therefore the FT reaction becomes the rate-controlling step in overall conversion of CO 2 to olefins. The model was further expanded to show the potential beneficial effects of water removal from the reactor on CO2 conversion and product yield. © Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53031
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Willauer H.D.,Ananth R.,Olsen M.T.,et al. Modeling and kinetic analysis of CO2 hydrogenation using a Mn and K-promoted Fe catalyst in a fixed-bed reactor[J]. Journal of CO2 Utilization,2013-01-01,2017-03-04