DOI: 10.1016/j.jcou.2015.05.004
Scopus记录号: 2-s2.0-84948068454
论文题名: Selective formation of light olefins from CO2 hydrogenation over Fe-Zn-K catalysts
作者: Zhang J. ; Lu S. ; Su X. ; Fan S. ; Ma Q. ; Zhao T.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2015
卷: 12 起始页码: 95
结束页码: 100
语种: 英语
英文关键词: CO2 hydrogenation
; Fe-Zn-K catalyst
; K promotion
; Light olefins
; Microwave-aided hydrothermal procedure
Scopus关键词: Catalysts
; Fischer-Tropsch synthesis
; Hydrocarbons
; Hydrogenation
; Hydrothermal synthesis
; Olefins
; Zinc
; Adsorption behavior
; Hydrogenation reactions
; Hydrothermal procedure
; Impregnation methods
; K promotion
; Light olefins
; Product distributions
; Selective production
; Catalyst activity
英文摘要: Fe-Zn-K catalysts were prepared in varied Fe/Zn molar ratios using microwave-aided hydrothermal procedure followed by K modification with impregnation method and applied to CO2 hydrogenation reaction via Fischer-Tropsch synthesis for the selective production of C2-C4 olefins. Results showed that the prepared catalysts had uniform particles within about 100 nm. Addition of zinc to iron matrix formed ZnFe2O4 spinel phase and ZnO phase, and caused increase of the surface areas, enhanced the interaction between iron and zinc and altered the reduction and CO2 adsorption behaviors. The catalysts displayed high activity for the CO2 conversion and significant improvement in the product distribution. The proper interactions between Fe and Zn proved to be advantageous to suppress the production of C5 + hydrocarbons and promote the production of C2-C4 olefin. At set reaction conditions of H2/CO2 of 3, GHSV of 1000 h-1, 320 °C, and 0.5 MPa, the 1Fe-1Zn-K catalyst with H2/CO reduction showed the best performance with the CO2 conversion of 51.03%. The selectivity of C2-C4 olefins in overall hydrocarbons and the ratio of olefin to paraffin in the C2-C4 fraction reached 53.58% and 6.86, respectively. © 2015 Elsevier Ltd. 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52939
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Zhang J.,Lu S.,Su X.,et al. Selective formation of light olefins from CO2 hydrogenation over Fe-Zn-K catalysts[J]. Journal of CO2 Utilization,2015-01-01,12