Solubility and diffusivity of CO2 in n-butanol + N235 system and absorption mechanism of CO2 in a coupled reaction-extraction process
- 28 Downloads
The absorption of CO2 in insoluble organic amine is crucial for understanding the mechanism of coupled reaction-extraction-crystallization process between aqueous chloride and CO2. In this study, the solubility and diffusivity of CO2 in n-butanol + N235 system were measured and reported. The absorption of CO2 in the system is a physical absorption behavior and the solubility of CO2 decreases with the increase of the mass fraction of N235. The diffusivity of CO2 increases firstly and then decreases with the increase in the mass fraction of N235. Moreover, the absorption mechanism of CO2 in the coupled reaction-extraction-crystallization process was investigated and identified by experiments. The results indicated that in the coupled reaction-extraction-crystallization process, CO2 is absorbed by the aqueous phase rather than by the organic phase and further transferred into the aqueous phase.
Keywordscarbon dioxide N235 solubility diffusivity coupled process
Unable to display preview. Download preview PDF.
- 3.Kuzmanovic B, Kuipers N J M, Haan André B, Kwant G. Reactive extraction of carboxylic acids from apolar hydrocarbons using aqueous solutions of sodium hydrogen carbonate with backrecovery using carbon dioxide under pressure. Separation and Purification Technology, 2005, 47(1): 58–72CrossRefGoogle Scholar
- 6.Glöckler R, Roduit J P. Industrial bioprocesses for the production of substituted aromatic heterocycles. Chimia, 1996, 50(9): 413–415Google Scholar
- 24.Estrada-Baltazar A, Iglesias-Silva G A, Caballero-Cerón C. Volumetric and transport properties of binary mixtures of n-octane + ethanol, + 1-Propanol, + 1-butanol, and + 1-pentanol from (293. 15 to 323. 15) K at atmospheric pressure. Journal of Chemical & Engineering Data, 2013, 58(12): 3351–3363CrossRefGoogle Scholar
© Higher Education Press and Springer-Verlag Berlin Heidelberg 2016