DOI: 10.1016/j.jcou.2016.06.009
Scopus记录号: 2-s2.0-84978121687
论文题名: Effect of support of Co-Na-Mo catalysts on the direct conversion of CO2 to hydrocarbons
作者: Owen R.E. ; Plucinski P. ; Mattia D. ; Torrente-Murciano L. ; Ting V.P. ; Jones M.D.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 97
结束页码: 103
语种: 英语
英文关键词: Carbon dioxide
; Cobalt
; Fischer-Tropsch
; Hydrocarbons
; Support
Scopus关键词: Carbon
; Catalysts
; Cobalt
; Crystallite size
; Hydrocarbons
; Particle size
; Product design
; Sodium
; Supports
; Water gas shift
; Direct conversion
; Effect of supports
; Fischer Tropsch
; Hydrocarbon distribution
; Hydrogenation of CO
; Metal-support interactions
; Mo-based catalysts
; Reverse water gas shift
; Carbon dioxide
英文摘要: This study of the effect of support of Co-Na-Mo based catalysts on the direct hydrogenation of CO2 into hydrocarbons (HC) provides guidelines for the design of catalysts for CO2 conversion. We demonstrate that the surface area of the support and the metal-support interaction have a key role determining the cobalt crystallite size and consequently the activity of the system. Cobalt particles with sizes <2 nm supported on MgO present low reverse water gas shift conversion with negligible Fischer-Tropsch activity. Increasing the cobalt particle size to ∼15 nm supported on SiO2 and ZSM-5 supports not only substantially increases the CO2 conversion but it also provides high HC selectivities. Further increase of the cobalt particle size to 25-30 nm has a detrimental effect on the global CO2 conversion with HC:CO ratios below 1, however, lower methane selectivity and enhanced formation of unsaturated HC products are achieved. Additionally, the metal-support interaction potentially also has a strong effect on the growth chain probability of the formed hydrocarbons, increasing as the metal-support interaction increases. These evidences demonstrate that CO2 conversion and hydrocarbon distribution can be tuned towards desired products by controlled catalyst design. © 2016 Elsevier Ltd. All rights reserved. 资助项目: University of Bath
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52877
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Owen R.E.,Plucinski P.,Mattia D.,et al. Effect of support of Co-Na-Mo catalysts on the direct conversion of CO2 to hydrocarbons[J]. Journal of CO2 Utilization,2016-01-01,16