@article{dedecker2025selectiveb,

title = {Selective adsorption and separation of C 6 hydrocarbons: the role of structural flexibility and functionalization in zeolitic imidazolate frameworks},

author = {Kevin Dedecker and Martin Drobek and Anne Julbe},

url = {https://pubs.rsc.org/en/content/articlehtml/2025/lf/d4lf00388h},

doi = {https://doi.org/10.1039/D4LF00388H},

year  = {2025},

date = {2025-01-01},

urldate = {2025-01-01},

journal = {RSC Applied Interfaces},

publisher = {Royal Society of Chemistry},

abstract = {This study investigates the selective adsorption and separation of C6 hydrocarbons (benzene, cyclohexane, and n-hexane) by zeolitic imidazolate frameworks (ZIFs), focusing on their structural flexibility and functionalization. ZIF-8_CH3 and ZIF-8_Br were synthesized and compared, indicating distinct adsorption behaviors. ZIF-8_CH3 showed higher uptake for benzene (9.5 molecules per unit cell) and n-hexane (8.0 mlc uc−1) compared to cyclohexane (1.0 mlc uc−1). In contrast, ZIF-8_Br exhibited enhanced adsorption for cyclohexane (5.0 mlc uc−1) and reduced n-hexane uptake (0.5 mlc uc−1). Computational simulations supported these findings, identifying the involved host–guest interactions. Ideal adsorbed solution theory analysis confirmed that ZIF-8_CH3 demonstrated virtually zero uptake of cyclohexane from binary mixtures containing either n-hexane or benzene, while ZIF-8_Br exhibited negligible adsorption of n-hexane from its mixtures with cyclohexane or benzene. It was concluded that bromine functionalization in ZIF-8_Br increased structural rigidity and selectivity for aromatic compounds. These results highlight the crucial role of functionalization and gate-opening phenomena in ZIFs to achieve efficient volatile organic compound capture and separation where traditional adsorbents may not be effective.},

keywords = {C6 Hydrocarbons, Gate-Opening, openQCM, Selective Adsorption, Structural Flexibility and Functionalization, Zeolitic Imidazolate Frameworks (ZIFs)},

pubstate = {published},

tppubtype = {article}

}