DOI: 10.1016/j.jcou.2016.06.001
Scopus记录号: 2-s2.0-84975140947
论文题名: Fluorinated Cu/Zn/Al/Zr hydrotalcites derived nanocatalysts for CO2 hydrogenation to methanol
作者: Gao P. ; Yang H. ; Zhang L. ; Zhang C. ; Zhong L. ; Wang H. ; Wei W. ; Sun Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 32
结束页码: 41
语种: 英语
英文关键词: Carbon dioxide hydrogenation
; Copper-based catalyst
; Fluorinated hydrotalcites
; Fluorine content
; Methanol synthesis
Scopus关键词: Carbon
; Catalyst activity
; Catalysts
; Copper compounds
; Fluorine
; Hydrogenation
; Methanol
; Particle size
; Synthesis gas manufacture
; Carbon dioxide hydrogenation
; Copper-based catalysts
; Fluorine content
; Hydrotalcites
; Methanol synthesis
; Carbon dioxide
英文摘要: A series of fluorinated Cu/Zn/Al/Zr hydrotalcite-like compounds are synthesized by incorporation of different amount of (AlF6)3- into hydrotalcite-like sheets. The fluorine-modified Cu/ZnO/Al2O3/ZrO2 catalysts are then obtained by calcination and reduction of fluorinated precursors. With increasing of F/Al atomic ratios, the Cu particle size increases continuously and the Cu surface area and dispersion decrease gradually, as well as the amount of moderately and strongly basic sites first increases significantly and then decreases. The catalytic performance for the methanol synthesis from CO2 hydrogenation is examined. The change of CO2 conversion is small when F/Al ≤ 0.8, while the CO2 conversion decreases remarkably with further increase of fluorine content. It is also found that the CH3OH selectivity is closely related to the distribution of basic sites and the selectivity of CH3OH takes a volcanic trend with increased fluorine content. The introduction of suitable amount of (AlF6)3- into the hydrotalcite-like structure can enhance the methanol yield markedly and the fluorine-modified catalysts with F/Al = 0.83 affords the substantial stability and the best catalytic performance. © 2016 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/52836
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Gao P.,Yang H.,Zhang L.,et al. Fluorinated Cu/Zn/Al/Zr hydrotalcites derived nanocatalysts for CO2 hydrogenation to methanol[J]. Journal of CO2 Utilization,2016-01-01,16