Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction
Due to their similar boiling points, separation of benzene and cyclohexane mixtures is among the current challenging processes faced by the petrochemical industry. As recently assessed, the soft imine‐based covalent organic framework [(TAM)(BDA)2] (COF‐300; TAM = tetrakis(4‐aminophenyl)methane, BDA ...
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Wiley-VCH
2024-12-01
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| Online Access: | https://doi.org/10.1002/smsc.202400277 |
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| author | Anna Mauri Rebecca Vismara Marco Moroni Esther Roldán‐Molina Jorge A. R. Navarro Simona Galli |
| author_facet | Anna Mauri Rebecca Vismara Marco Moroni Esther Roldán‐Molina Jorge A. R. Navarro Simona Galli |
| author_sort | Anna Mauri |
| collection | DOAJ |
| description | Due to their similar boiling points, separation of benzene and cyclohexane mixtures is among the current challenging processes faced by the petrochemical industry. As recently assessed, the soft imine‐based covalent organic framework [(TAM)(BDA)2] (COF‐300; TAM = tetrakis(4‐aminophenyl)methane, BDA = terephthaldehyde) possesses higher affinity for benzene than cyclohexane in both static conditions at 298 K and dynamic conditions in the range of 298–348 K. As shown in this contribution, in situ powder X‐ray diffraction while dosing benzene and cyclohexane vapors in the range of 0.01–4.74 bar on the narrow‐pore form of COF‐300 confirmed the coherent switchability of its framework, unveiling the progressive formation of different intermediate‐ and large‐pore forms. In addition, a basket of otherwise inaccessible key crystallochemical details—“on/off” structural‐feature changes cooperating to adsorption, primary adsorption sites, and host–guest and guest–guest interactions—was successfully retrieved. Overall, these findings allowed to shed light on the framework dynamics underneath the previously observed selectivity toward benzene over cyclohexane, completing this case of study and providing relevant information for the design of new‐generation adsorbents for this applicative context. |
| format | Article |
| id | doaj-art-42f31a7843ce40f192f56ddc0769ccec |
| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley-VCH |
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| series | Small Science |
| spelling | doaj-art-42f31a7843ce40f192f56ddc0769ccec2024-12-01T13:34:04ZengWiley-VCHSmall Science2688-40462024-12-01412n/an/a10.1002/smsc.202400277Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray DiffractionAnna Mauri0Rebecca Vismara1Marco Moroni2Esther Roldán‐Molina3Jorge A. R. Navarro4Simona Galli5Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell’Insubria Via Valleggio 9 22100 Como ItalyDipartimento di Scienza e Alta Tecnologia Università degli Studi dell’Insubria Via Valleggio 9 22100 Como ItalyDipartimento di Scienza e Alta Tecnologia Università degli Studi dell’Insubria Via Valleggio 9 22100 Como ItalyDepartamento de Química Inorgánica Universidad de Granada Avenida Fuentenueva S/N 18071 Granada SpainDepartamento de Química Inorgánica Universidad de Granada Avenida Fuentenueva S/N 18071 Granada SpainDipartimento di Scienza e Alta Tecnologia Università degli Studi dell’Insubria Via Valleggio 9 22100 Como ItalyDue to their similar boiling points, separation of benzene and cyclohexane mixtures is among the current challenging processes faced by the petrochemical industry. As recently assessed, the soft imine‐based covalent organic framework [(TAM)(BDA)2] (COF‐300; TAM = tetrakis(4‐aminophenyl)methane, BDA = terephthaldehyde) possesses higher affinity for benzene than cyclohexane in both static conditions at 298 K and dynamic conditions in the range of 298–348 K. As shown in this contribution, in situ powder X‐ray diffraction while dosing benzene and cyclohexane vapors in the range of 0.01–4.74 bar on the narrow‐pore form of COF‐300 confirmed the coherent switchability of its framework, unveiling the progressive formation of different intermediate‐ and large‐pore forms. In addition, a basket of otherwise inaccessible key crystallochemical details—“on/off” structural‐feature changes cooperating to adsorption, primary adsorption sites, and host–guest and guest–guest interactions—was successfully retrieved. Overall, these findings allowed to shed light on the framework dynamics underneath the previously observed selectivity toward benzene over cyclohexane, completing this case of study and providing relevant information for the design of new‐generation adsorbents for this applicative context.https://doi.org/10.1002/smsc.202400277benzene/cyclohexane separationcovalent organic frameworksin situ powder X‐ray diffractionsoft porous crystals |
| spellingShingle | Anna Mauri Rebecca Vismara Marco Moroni Esther Roldán‐Molina Jorge A. R. Navarro Simona Galli Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction Small Science benzene/cyclohexane separation covalent organic frameworks in situ powder X‐ray diffraction soft porous crystals |
| title | Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction |
| title_full | Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction |
| title_fullStr | Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction |
| title_full_unstemmed | Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction |
| title_short | Investigating the Dynamics of a Soft Crystalline Covalent Organic Framework during Benzene and Cyclohexane Adsorption by in situ Powder X‐ray Diffraction |
| title_sort | investigating the dynamics of a soft crystalline covalent organic framework during benzene and cyclohexane adsorption by in situ powder x ray diffraction |
| topic | benzene/cyclohexane separation covalent organic frameworks in situ powder X‐ray diffraction soft porous crystals |
| url | https://doi.org/10.1002/smsc.202400277 |
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