DOI: 10.1016/j.jcou.2015.12.006
Scopus记录号: 2-s2.0-84952334187
论文题名: Carbon dioxide uptake as ammonia and amine carbamates and their efficient conversion into urea and 1,3-disubstituted ureas
作者: Barzagli F. ; Mani F. ; Peruzzini M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 13 起始页码: 81
结束页码: 89
语种: 英语
英文关键词: 1,3-Disubstituted ureas
; Carbamate conversion
; CO2 capture and utilization
; Urea production
Scopus关键词: Ammonium bicarbonate
; Carbon
; Carbon dioxide
; Catalysts
; Metabolism
; Mixtures
; Nuclear magnetic resonance spectroscopy
; Organic compounds
; Ammonium carbamates
; Conversion reactions
; Copper catalyst
; NMR analysis
; Reaction mixture
; Solid mixtures
; Urea production
; Water ethanol solutions
; Urea
英文摘要: Solid mixtures of ammonium carbamate and bicarbonate originating from the CO2 capture by NH3 in water-ethanol solution were converted into urea by heating to 428 K for 60-90 min. The yield of urea was up to 53% on molar basis. An analogous technique was employed to capture CO2 with 1-aminobutane, 1-amino-2-methylpropane, 2-amino-2-methylpropane, 1-aminooctane, aminocyclohexane and 1,4-diazacyclohexane, in organic solvents as amine carbamates which were separated in the solid state and thermally converted at 423 K for 15-16 h into 1,3-disubstituted ureas with 30-40% yield on molar scale. The formation of 1,3-disubstituted ureas was 100% selective. The rate of the conversion reaction was significantly improved in the presence of copper catalysts. The identification and quantification of the products in the reaction mixtures were obtained by 13C NMR analysis. © 2015 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/52938
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Barzagli F.,Mani F.,Peruzzini M.. Carbon dioxide uptake as ammonia and amine carbamates and their efficient conversion into urea and 1,3-disubstituted ureas[J]. Journal of CO2 Utilization,2016-01-01,13