期刊
FLUID PHASE EQUILIBRIA
卷 370, 期 -, 页码 1-7出版社
ELSEVIER
DOI: 10.1016/j.fluid.2014.02.029
关键词
CO2 solubilities; High-boiling-point absorbents; Henry's law constant; Thermodynamic properties
资金
- National Natural Science Foundation of China [51276010, 21306007]
- National Basic Research Program of China [2011CB201306]
The isothermal synthetic method was used to measure CO2 solubilities in three high-boiling-point absorbents, such as 2-ethoxyethyl ether, 2-butoxyethyl acetate and 2-(2-ethoxyethoxy)ethyl acetate under pressures ranging from 0 to 1.3 MPa and temperatures ranging from 293.15 to 333.15 K. Henry's law constants and thermodynamic properties (solution of Gibbs energy, solution of enthalpy, and solution of entropy) of selected systems were calculated. Results showed that carbonyl and ether groups in the absorbents improved CO2 solubility and the carbonyl group was more effective than the ether group. 2-(2-Ethoxyethoxy)ethyl acetate which is rich in carbonyl and ether groups, was found to be the most excellent absorbent for CO2. (C) 2014 Elsevier B.V. All rights reserved.
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