期刊
12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
卷 63, 期 -, 页码 633-639出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2014.11.068
关键词
diamine; NMR; carbamate; CO2 capture
NMR experiments were carried out for 30 mass % aqueous solutions of monoethanolmine (MEA), ethylenediamine (EDA) and piperazine (PZ) at 25 degrees C. To distinguish between the amine/protonated amine and bicarbonate/carbonate pairs, an earlier method developed for primary amine (2-amino-2-methyl-1-propanol) was implemented. The amine protonation constant, the dissociation constant of carbonic acid from literature, and pH measurements for different ionic strengths, were all employed and the data were correlated with ionic strength. (C) 2014 The Authors. Published by Elsevier Ltd.
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