论文类型：期刊论文

第一作者：Chen, Siming

通讯作者：Zhang, YC (reprint author), Dalian Univ Technol, Dept Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

合写作者：Chen, Shaoyun,Zhang, Yongchun,Qin, Liang,Guo, Chao,Chen, Jian

发表时间：2016-04-01

发表刊物：INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL

收录刊物：SCIE、EI、Scopus

文献类型：J

卷号：47

页面范围：151-158

ISSN号：1750-5836

关键字：CO2; N-ethylmonoethanolamine (EMEA); Non-aqueous; Absorption-desorption; C-13 NMR

摘要：The CO2 absorption and desorption in N-ethylmonoethanolamine (EMEA) solutions were carried out using an absorption desorption apparatus and the species distribution was explored using the quantitative C-13 NMR spectroscopy. EMEA + ethanol solution had a much lower CO2 loading (0.547 mol CO2/mol EMEA) than EMEA + H2O solution (0.799 mol CO2/mol EMEA) due to the lower concentration of alky carbonate generated in EMEA + ethanol solution than the corresponding bicarbonate/carbonate as generated in EMEA + H2O solution and the no further reaction of carbamate with CO2 in EMEA+ ethanol solution. The EMEA regeneration efficiency of the EMEA+ ethanol solution at 363, 373 and 383K (55.44, 86.86 and 100.00%) was much higher than EMEA + H2O solution at corresponding temperatures (27.56, 30.25 and 38.80%), which was mainly influenced by the decomposition of carbamate, while the existence of bicarbonate prevented carbamate decomposing. (C) 2016 Elsevier Ltd. All rights reserved.

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