DOI: 10.1016/j.jcou.2018.12.021
Scopus记录号: 2-s2.0-85059512619
论文题名: Solventless liquid phase conversion of glycerol with CO 2 to H 2 , CO, ketones and epoxides in semi-batch reactor
作者: Florez-Rodriguez P.P. ; Pamphile-Adrián A.J. ; Passos F.B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2019
卷: 29 起始页码: 271
结束页码: 282
语种: 英语
英文关键词: Carbon dioxide
; Epoxides
; Glycerol conversion
; Mono metallic catalysts
; Semi-batch reactor
Scopus关键词: Alumina
; Aluminum oxide
; Batch reactors
; Carbon dioxide
; Carbon monoxide
; Chromium
; Economics
; Emulsification
; Ethylene
; Ethylene glycol
; Glycerol
; Ketones
; Liquids
; Nickel
; Reusability
; Zinc
; Epoxides
; Glycerol conversions
; Industrial product
; Metallic catalysts
; Metallic phasis
; Ni and co catalysts
; Semi-batch systems
; Semibatch reactor
; Catalyst activity
英文摘要: Liquid phase conversion of glycerol was investigated in a semi-batch system. γ-Al 2 O 3 supported Ni, Co, Cr and Zn catalysts (13 wt.%) were prepared using an emulsion with ethylene glycol (EG) and characterized by XRD, TPR, BET, and XPS techniques. After preparation of catalysts, reduction-passivation was performed, and metallic phases of Ni and Co catalysts were observed. For Cr and Zn catalysts, Cr 2 O 3 and ZnAl 2 O 4 phases were observed, respectively, which lead to a low activity. Co(EG)RP catalyst deactivated after 100 min of reaction. Ni(EG) catalyst showed the best activity and stability with a glycerol conversion of 38% after 6 h of reaction. Semi-batch reactor considerably favored the selectivity to liquid and gas products, even at 250 °C, as compared to batch reactor. Ni(EG)RP and Co(EG)RP catalysts favored the formation of hydrogen, carbon monoxide, water, important high added value starting/intermediate industrial products such as 1,2-diformyloxypropane, pinacolone, acetol, and epoxides (glycidol, 2-(ethoxymethyl)oxirane and 2-(propoxymethyl)oxirane) representing between 50 and 70% of the total yield, respectively. Finally, in the recycle tests without a stage of reactivation of the Ni catalyst, catalytic activity decreased about 50%, from 405 to 206 g of converted glycerol per gram of Ni°, showing a reusability up to three cycles, which represents an economy of energy, time and H 2 spending for this type of system. © 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/117308
Appears in Collections: 气候变化与战略
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Recommended Citation:
Florez-Rodriguez P.P.,Pamphile-Adrián A.J.,Passos F.B.. Solventless liquid phase conversion of glycerol with CO 2 to H 2 , CO, ketones and epoxides in semi-batch reactor[J]. Journal of CO2 Utilization,2019-01-01,29