Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption
A novel experimental technique, quasi-equilibrated temperature-programmed desorption and adsorption (QE-TPDA), was used to study the water sorption properties and hydrothermal stability of aluminum trimesate MIL-96 and aluminum isophthalate CAU-10, which have been selected due to their remarkable so...
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2024-11-01
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| author | Waclaw Makowski Patrycja Gryta Gabriela Jajko-Liberka Monika Cieślik-Górna Aleksandra Korzeniowska |
| author_facet | Waclaw Makowski Patrycja Gryta Gabriela Jajko-Liberka Monika Cieślik-Górna Aleksandra Korzeniowska |
| author_sort | Waclaw Makowski |
| collection | DOAJ |
| description | A novel experimental technique, quasi-equilibrated temperature-programmed desorption and adsorption (QE-TPDA), was used to study the water sorption properties and hydrothermal stability of aluminum trimesate MIL-96 and aluminum isophthalate CAU-10, which have been selected due to their remarkable sorption properties. The QE-TPDA profiles of water observed for MIL-96 and CAU-10 confirmed the hydrophilic nature of these materials. Complex QE-TPDA profiles indicate that water sorption in MIL-96 follows a three-step pore filling mechanism. The shape of single desorption peaks in the QE-TPDA profiles for CAU-10 confirms that water sorption involves a reversible phase transition. Based on the QE-TPDA profiles, the water adsorption heat was determined: 45–46 kJ/mol for CAU-10 and 43–56 kJ/mol for MIL-96, in the latter case depending on the adsorption extent. Hydrothermal stability tests revealed that MIL-96 retained its stable porosity-related sorption capacity for water after hydrothermal treatment up to 290 °C. Gradual changes in the QE-TPDA profiles due to the hydrothermal treatment above 290 °C, with decreasing the high-temperature desorption peak and increasing the low-temperature one, indicate minor structural changes occurring in this material. Only after 410 °C treatment was fast degradation of MIL-96 observed. CAU-10 exhibited high and unchanged hydrothermal stability up to 400 °C. |
| format | Article |
| id | doaj-art-2a9d98c9c76640f3a025ebf70743f527 |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-11-01 |
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| series | Molecules |
| spelling | doaj-art-2a9d98c9c76640f3a025ebf70743f5272024-12-13T16:28:31ZengMDPI AGMolecules1420-30492024-11-012923562510.3390/molecules29235625Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated ThermodesorptionWaclaw Makowski0Patrycja Gryta1Gabriela Jajko-Liberka2Monika Cieślik-Górna3Aleksandra Korzeniowska4Faculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, PolandFaculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, PolandFaculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, PolandFaculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, PolandFaculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, PolandA novel experimental technique, quasi-equilibrated temperature-programmed desorption and adsorption (QE-TPDA), was used to study the water sorption properties and hydrothermal stability of aluminum trimesate MIL-96 and aluminum isophthalate CAU-10, which have been selected due to their remarkable sorption properties. The QE-TPDA profiles of water observed for MIL-96 and CAU-10 confirmed the hydrophilic nature of these materials. Complex QE-TPDA profiles indicate that water sorption in MIL-96 follows a three-step pore filling mechanism. The shape of single desorption peaks in the QE-TPDA profiles for CAU-10 confirms that water sorption involves a reversible phase transition. Based on the QE-TPDA profiles, the water adsorption heat was determined: 45–46 kJ/mol for CAU-10 and 43–56 kJ/mol for MIL-96, in the latter case depending on the adsorption extent. Hydrothermal stability tests revealed that MIL-96 retained its stable porosity-related sorption capacity for water after hydrothermal treatment up to 290 °C. Gradual changes in the QE-TPDA profiles due to the hydrothermal treatment above 290 °C, with decreasing the high-temperature desorption peak and increasing the low-temperature one, indicate minor structural changes occurring in this material. Only after 410 °C treatment was fast degradation of MIL-96 observed. CAU-10 exhibited high and unchanged hydrothermal stability up to 400 °C.https://www.mdpi.com/1420-3049/29/23/5625adsorptionthermodesorptionwatermetal–organic frameworkhydrothermal stabilityquasi-equilibrated temperature-programmed desorption and adsorption |
| spellingShingle | Waclaw Makowski Patrycja Gryta Gabriela Jajko-Liberka Monika Cieślik-Górna Aleksandra Korzeniowska Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption Molecules adsorption thermodesorption water metal–organic framework hydrothermal stability quasi-equilibrated temperature-programmed desorption and adsorption |
| title | Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption |
| title_full | Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption |
| title_fullStr | Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption |
| title_full_unstemmed | Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption |
| title_short | Water Sorption Properties and Hydrothermal Stability of Al-Containing Metal–Organic Frameworks CAU-10 and MIL-96 Studied Using Quasi-Equilibrated Thermodesorption |
| title_sort | water sorption properties and hydrothermal stability of al containing metal organic frameworks cau 10 and mil 96 studied using quasi equilibrated thermodesorption |
| topic | adsorption thermodesorption water metal–organic framework hydrothermal stability quasi-equilibrated temperature-programmed desorption and adsorption |
| url | https://www.mdpi.com/1420-3049/29/23/5625 |
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