Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization
Acidic deep eutectic solvents (DESs) have been considered desirable extractants and catalysts for desulfurization. However, their hydrogen bond donors (HBDs) are usually sole organic acids, which are not conducive to efficient green catalysis. Herein, a novel inorganic–organic dual-acid DES (DADES)...
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MDPI AG
2023-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/23/7743 |
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| author | Dongao Zhu Lixian Xu Beibei Zhang Linhua Zhu Jing He Hongping Li Huaming Li Wei Jiang |
| author_facet | Dongao Zhu Lixian Xu Beibei Zhang Linhua Zhu Jing He Hongping Li Huaming Li Wei Jiang |
| author_sort | Dongao Zhu |
| collection | DOAJ |
| description | Acidic deep eutectic solvents (DESs) have been considered desirable extractants and catalysts for desulfurization. However, their hydrogen bond donors (HBDs) are usually sole organic acids, which are not conducive to efficient green catalysis. Herein, a novel inorganic–organic dual-acid DES (DADES) was reported for efficient extractive and oxidative desulfurization. Benefiting from the physical interaction among the three components in a DADES, a transparent homogeneous liquid can be obtained even though inorganic acid (boric acid, BA) and organic acid (acetic acid, AA) can be immiscible. Furthermore, the dual-acid HBD can increase the acidity of the DADES and reduce its viscosity, accelerating its mass transfer efficiency and enhancing its catalytic activity. With 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) as the hydrogen bond acceptor, [Bmim]Cl/BA/0.3AA effectively activated hydrogen peroxide and achieved sulfur removal of 96.6% at 40 °C. Furthermore, the universality of the synergistic effect in various DADESs was confirmed by the modulation of the types of organic acids. This study not only motivates the construction of more intriguing novel DESs based on the DADES concept but also highlights their potential in clean fuel production. |
| first_indexed | 2024-03-09T01:45:37Z |
| format | Article |
| id | doaj.art-0b09b2559f454996b532662b2b30da10 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T01:45:37Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-0b09b2559f454996b532662b2b30da102023-12-08T15:22:12ZengMDPI AGMolecules1420-30492023-11-012823774310.3390/molecules28237743Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative DesulfurizationDongao Zhu0Lixian Xu1Beibei Zhang2Linhua Zhu3Jing He4Hongping Li5Huaming Li6Wei Jiang7Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaKey Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, ChinaInstitute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, ChinaAcidic deep eutectic solvents (DESs) have been considered desirable extractants and catalysts for desulfurization. However, their hydrogen bond donors (HBDs) are usually sole organic acids, which are not conducive to efficient green catalysis. Herein, a novel inorganic–organic dual-acid DES (DADES) was reported for efficient extractive and oxidative desulfurization. Benefiting from the physical interaction among the three components in a DADES, a transparent homogeneous liquid can be obtained even though inorganic acid (boric acid, BA) and organic acid (acetic acid, AA) can be immiscible. Furthermore, the dual-acid HBD can increase the acidity of the DADES and reduce its viscosity, accelerating its mass transfer efficiency and enhancing its catalytic activity. With 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) as the hydrogen bond acceptor, [Bmim]Cl/BA/0.3AA effectively activated hydrogen peroxide and achieved sulfur removal of 96.6% at 40 °C. Furthermore, the universality of the synergistic effect in various DADESs was confirmed by the modulation of the types of organic acids. This study not only motivates the construction of more intriguing novel DESs based on the DADES concept but also highlights their potential in clean fuel production.https://www.mdpi.com/1420-3049/28/23/7743dual-acid deep eutectic solventinorganic and organic acidssynergistic effectoxidative desulfurizationmechanism |
| spellingShingle | Dongao Zhu Lixian Xu Beibei Zhang Linhua Zhu Jing He Hongping Li Huaming Li Wei Jiang Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization Molecules dual-acid deep eutectic solvent inorganic and organic acids synergistic effect oxidative desulfurization mechanism |
| title | Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization |
| title_full | Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization |
| title_fullStr | Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization |
| title_full_unstemmed | Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization |
| title_short | Designing Inorganic–Organic Dual-Acid Deep Eutectic Solvents for Synergistically Enhanced Extractive and Oxidative Desulfurization |
| title_sort | designing inorganic organic dual acid deep eutectic solvents for synergistically enhanced extractive and oxidative desulfurization |
| topic | dual-acid deep eutectic solvent inorganic and organic acids synergistic effect oxidative desulfurization mechanism |
| url | https://www.mdpi.com/1420-3049/28/23/7743 |
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