Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water
The ternary two-liquid phase system consisting of neopentyl glycol, sodium formate, and water was studied at pH values of 3, 4, 5, and 6. This study examined the effect of pH on phase diagrams, focusing on the length and slope of the tie-lines between the two conjugated phases. The results showed th...
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Croatian Society of Chemical Engineers
2025-01-01
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| Series: | Chemical and Biochemical Engineering Quarterly |
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| Online Access: | http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-4-2024.pdf |
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| author | Y. Zhang D. G. Li |
| author_facet | Y. Zhang D. G. Li |
| author_sort | Y. Zhang |
| collection | DOAJ |
| description | The ternary two-liquid phase system consisting of neopentyl glycol, sodium formate, and water was studied at pH values of 3, 4, 5, and 6. This study examined the effect of pH on phase diagrams, focusing on the length and slope of the tie-lines between the two conjugated phases. The results showed that the two-phase region expanded, and both the length and slope of the tie-lines increased with rising pH values. The phase behavior was analyzed using the Bancroft, Othmer-Tobias, and Hand equations, the measured data showing acceptable consistency, and the Bancroft equation providing the best fit. The plait points at different pH values were estimated through extrapolation, and empirical equations were used to fit the data and gave good results. The fitted curves matched the data well. |
| format | Article |
| id | doaj-art-0af544510b1c4dcea0cf7b13d6e64b4c |
| institution | Kabale University |
| issn | 0352-9568 1846-5153 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Croatian Society of Chemical Engineers |
| record_format | Article |
| series | Chemical and Biochemical Engineering Quarterly |
| spelling | doaj-art-0af544510b1c4dcea0cf7b13d6e64b4c2025-01-21T13:15:32ZengCroatian Society of Chemical EngineersChemical and Biochemical Engineering Quarterly0352-95681846-51532025-01-0138429329910.15255/CABEQ.2024.2357Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and WaterY. Zhang0D. G. Li1School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, ChinaSchool of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, ChinaThe ternary two-liquid phase system consisting of neopentyl glycol, sodium formate, and water was studied at pH values of 3, 4, 5, and 6. This study examined the effect of pH on phase diagrams, focusing on the length and slope of the tie-lines between the two conjugated phases. The results showed that the two-phase region expanded, and both the length and slope of the tie-lines increased with rising pH values. The phase behavior was analyzed using the Bancroft, Othmer-Tobias, and Hand equations, the measured data showing acceptable consistency, and the Bancroft equation providing the best fit. The plait points at different pH values were estimated through extrapolation, and empirical equations were used to fit the data and gave good results. The fitted curves matched the data well.http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-4-2024.pdfaqueous two-phase systemsneopentyl glycolphase equilibriaph valuesodium formate |
| spellingShingle | Y. Zhang D. G. Li Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water Chemical and Biochemical Engineering Quarterly aqueous two-phase systems neopentyl glycol phase equilibria ph value sodium formate |
| title | Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water |
| title_full | Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water |
| title_fullStr | Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water |
| title_full_unstemmed | Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water |
| title_short | Effect of pH on the Phase Equilibrium of a Ternary Mixture of Neopentyl Glycol, Salt, and Water |
| title_sort | effect of ph on the phase equilibrium of a ternary mixture of neopentyl glycol salt and water |
| topic | aqueous two-phase systems neopentyl glycol phase equilibria ph value sodium formate |
| url | http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-4-2024.pdf |
| work_keys_str_mv | AT yzhang effectofphonthephaseequilibriumofaternarymixtureofneopentylglycolsaltandwater AT dgli effectofphonthephaseequilibriumofaternarymixtureofneopentylglycolsaltandwater |