Liquid Speciation Study in Amine Amino Acid Salts for CO2 Absorbent with 13C-NMR

被引:42
作者
Hartono, A. [1 ]
Aronu, U. E. [1 ]
Svendsen, H. F. [1 ]
机构
[1] Norwegian Univ Sci & Technol NTNU, Dept Chem Engn, NO-7045 Trondheim, Norway
来源
10TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES | 2011年 / 4卷
关键词
Amino acid salts; NMR; MAPA; Sarcosine; Speciation; ABSORPTION;
D O I
10.1016/j.egypro.2011.01.043
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Qualitative C-13-NMR experiments were performed at 298K and for different loadings to investigate the liquid speciation in amino acid neutralized by both strong inorganic and weak organic bases. The two different systems, potassiumsarcosinate(K-SAR) and sarcosine blended with equinormal quantities of 3-(methylamino)propylamine ( MAPA-SAR) were studied. In presence of CO2, the spectra of the MAPA-SAR system showed more species than that of the K-SAR system due to the presence of carbamates from the primary, secondary and amino acid amine groups even at very low loadings. This means that complete neutralization of sarcosine with MAPA does not occur since carbamates of the primary and secondary amine group of MAPA were formed in the system. In order to quantify the percentage of carbamate formed on the amine group of sarcosine compared to carbamates formed on MAPA, a quantitative C-13-NMR experiment is needed as a future work. (C) 2010 Published by Elsevier Ltd.
引用
收藏
页码:209 / 215
页数:7
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