The study of ion speciation of CO2 absorption into aqueous 1-Dimethylamino-2-propanol solution using the NMR technique

摘要

In this work, the tertiary amine, 1DMA2P, was employed to study the concentrations of 1DMA2P, 1DMA2PH~+, HCO3~-, CO3~2 when it is loaded with different CO2 loadings as determined using the ~(13)C NMR technique at 1M concentration of 1DMA2P, temperature of 301K, and CO2 loading in the range of 0-0.83 mol CO2/mol amine. The ion speciation (1DMA2P, 1DMA2PH~+, HCO3~-, CO3~(2-)) plots of IDMA2P-H2O-CO2 system were developed in the study.