Low-temperature rectification represents the state-of the-art in olefin/paraffin separation. Adsorption on microporous coordination polymers could be a less energy and cost-intensive alternative. Especially zeolitic imidazolate frameworks, such as ZIF-8, exhibits an interesting adsorption behavior since alkanes are preferentially adsorbed in comparison with the corresponding olefins. The single-component adsorption isotherms and mixed gas breakthrough experiments of C-2 to C-4 hydrocarbons show the potential of ZIF-8 for olefin/paraffin separation.