Hydrocarbon Sorption in Flexible MOFs-Part III: Modulation of Gas Separation Mechanisms.

ABSTRACT: Single gas sorption experiments with the C4-hydrocarbons n-butane, iso-butane, 1-butene and iso-butene on the flexible MOFs Cu-IHMe-pw and Cu-IHEt-pw were carried out with both thermodynamic equilibrium and overall sorption kinetics. Subsequent static binary gas mixture experiments of n-butane and iso-butane unveil a complex dependence of the overall selectivity on sorption enthalpy, rate of structural transition as well as steric effects. A thermodynamic separation favoring iso-butane as well as kinetic separation favoring n-butane are possible within Cu-IHMe-pw while complete size exclusion of iso-butane is achieved in Cu-IHEt-pw. This proof-of-concept study shows that the structural flexibility offers ad

SUBMITTER: Preißler-Kurzhofer H 

PROVIDER: S-EPMC10856790 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature