Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration
Amino ethers of <i>ortho</i>-phosphoric acid prepared using triethanolamine; <i>ortho</i>-phosphoric acid; polyoxyethylene glycol, diethylene glycol, triethylene glycol and glycerol (AEPA-DEG/TEG/Gl) were investigated as extractants for the separation of aqueous ethanol solut...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | ChemEngineering |
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| Online Access: | https://www.mdpi.com/2305-7084/5/4/71 |
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| author | Alexander V. Klinov Alexander V. Malygin Alina R. Khairullina Alisa R. Davletbaeva Oleg O. Sazonov Ivan P. Anashkin Ilsiya M. Davletbaeva |
| author_facet | Alexander V. Klinov Alexander V. Malygin Alina R. Khairullina Alisa R. Davletbaeva Oleg O. Sazonov Ivan P. Anashkin Ilsiya M. Davletbaeva |
| author_sort | Alexander V. Klinov |
| collection | DOAJ |
| description | Amino ethers of <i>ortho</i>-phosphoric acid prepared using triethanolamine; <i>ortho</i>-phosphoric acid; polyoxyethylene glycol, diethylene glycol, triethylene glycol and glycerol (AEPA-DEG/TEG/Gl) were investigated as extractants for the separation of aqueous ethanol solutions by extractive distillation. Using the method of open evaporation, the influence of the molecular structure of AEPA-DEG/TEG/Gl on the conditions of vapor–liquid equilibrium in ethanol–water solutions was studied. It has been shown that the addition of AEPA-DEG/TEG/Gl removes the azeotropic point. At the same time, the observed effect turned out to be significantly higher in comparison with the use of pure glycerol or glycols for these purposes. The UNIFAC model was used to calculate the activity coefficients in a three-component ethanol–water–AEPA-DEG/TEG/Gl mixture. Within the framework of this model, a division of AEPA-DEG/TEG/Gl molecules into group components is proposed. Previously unknown parameters of the groups PO–CH, PO–CH<sub>2</sub>, PO–OCH<sub>2</sub>, PO–NHCH<sub>2</sub>, PO–OH, and PO–H<sub>2</sub>O were determined from our own and published experimental data. The concentration dependences of the density and dynamic viscosity of AEPA-Gl aqueous solutions have been experimentally measured. Experimental studies of the extractive distillation of ethanol–water using AEPA-Gl as an extractant have been carried out in a column with bubble cap plates and a packing, and its high efficiency has been established. |
| first_indexed | 2024-03-10T04:24:50Z |
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| institution | Directory Open Access Journal |
| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-03-10T04:24:50Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-71f71a6a53ec47239f611d8b7bfb1e462023-11-23T07:40:35ZengMDPI AGChemEngineering2305-70842021-10-01547110.3390/chemengineering5040071Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol DehydrationAlexander V. Klinov0Alexander V. Malygin1Alina R. Khairullina2Alisa R. Davletbaeva3Oleg O. Sazonov4Ivan P. Anashkin5Ilsiya M. Davletbaeva6Department of Chemical Process Engineering, Kazan National Research Technological University, 420015 Kazan, RussiaDepartment of Chemical Process Engineering, Kazan National Research Technological University, 420015 Kazan, RussiaDepartment of Chemical Process Engineering, Kazan National Research Technological University, 420015 Kazan, RussiaTechnology of Synthetic Rubber Department, Kazan National Research Technological University, 420015 Kazan, RussiaTechnology of Synthetic Rubber Department, Kazan National Research Technological University, 420015 Kazan, RussiaDepartment of Chemical Process Engineering, Kazan National Research Technological University, 420015 Kazan, RussiaTechnology of Synthetic Rubber Department, Kazan National Research Technological University, 420015 Kazan, RussiaAmino ethers of <i>ortho</i>-phosphoric acid prepared using triethanolamine; <i>ortho</i>-phosphoric acid; polyoxyethylene glycol, diethylene glycol, triethylene glycol and glycerol (AEPA-DEG/TEG/Gl) were investigated as extractants for the separation of aqueous ethanol solutions by extractive distillation. Using the method of open evaporation, the influence of the molecular structure of AEPA-DEG/TEG/Gl on the conditions of vapor–liquid equilibrium in ethanol–water solutions was studied. It has been shown that the addition of AEPA-DEG/TEG/Gl removes the azeotropic point. At the same time, the observed effect turned out to be significantly higher in comparison with the use of pure glycerol or glycols for these purposes. The UNIFAC model was used to calculate the activity coefficients in a three-component ethanol–water–AEPA-DEG/TEG/Gl mixture. Within the framework of this model, a division of AEPA-DEG/TEG/Gl molecules into group components is proposed. Previously unknown parameters of the groups PO–CH, PO–CH<sub>2</sub>, PO–OCH<sub>2</sub>, PO–NHCH<sub>2</sub>, PO–OH, and PO–H<sub>2</sub>O were determined from our own and published experimental data. The concentration dependences of the density and dynamic viscosity of AEPA-Gl aqueous solutions have been experimentally measured. Experimental studies of the extractive distillation of ethanol–water using AEPA-Gl as an extractant have been carried out in a column with bubble cap plates and a packing, and its high efficiency has been established.https://www.mdpi.com/2305-7084/5/4/71extractive distillationvapor–liquid equilibriumaqueous solution ethanolUNIFAC model |
| spellingShingle | Alexander V. Klinov Alexander V. Malygin Alina R. Khairullina Alisa R. Davletbaeva Oleg O. Sazonov Ivan P. Anashkin Ilsiya M. Davletbaeva Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration ChemEngineering extractive distillation vapor–liquid equilibrium aqueous solution ethanol UNIFAC model |
| title | Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration |
| title_full | Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration |
| title_fullStr | Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration |
| title_full_unstemmed | Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration |
| title_short | Amino Ethers of <i>Ortho</i>-Phosphoric Acid as Extragents for Ethanol Dehydration |
| title_sort | amino ethers of i ortho i phosphoric acid as extragents for ethanol dehydration |
| topic | extractive distillation vapor–liquid equilibrium aqueous solution ethanol UNIFAC model |
| url | https://www.mdpi.com/2305-7084/5/4/71 |
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