Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 61, Issue 6, Pages 2105-2113Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.6b00031
Keywords
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Funding
- National Natural Science Foundation of China [21506138]
- Natural Science Foundation of Zhejiang Province, China [LQ15B060001]
- Taizhou Science and Technology Plan Projects [1402ky15]
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The solid liquid phase equilibrium for the ternary succinic acid + adipic acid + ethanol system was determined at 283.15, 303.15, and 313.15 K, respectively, under about 101.3 kPa. The mutual solubility for the ternary system were obtained. At each temperature, there existed two pure solid phases in the ternary system, which were pure succinic acid and pure adipic add, and identified by the Schreinemaker's wet residue method and X-ray diffraction (XRD) pattern. The crystallization region of adipic acid was a little smaller than that of succinic acid at a certain temperature. The solid-liquid phase equilibrium for the ternary system was correlated and calculated by using the Wilson and NRTL models, and the corresponding binary interaction parameters were acquired. Results showed that calculated solubility values with NRTL model agreed better than those with the Wilson model. In addition, the densities of the equilibrium liquor were obtained and correlated with an empirical equation. The mutual solubility and the phase diagram for the ternary system are helpful in separating Of succinic acid and adipic acid mixtures.
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