Langmuir, Vol.29, No.27, 8592-8600, 2013
Ethene/Ethane and Propene/Propane Separation via the Olefin and Paraffin Selective Metal-Organic Framework Adsorbents CPO-27 and ZIF-8
Two types of metal-organic frameworks (MOFs) have been synthesized and evaluated in the separation of C-2 and C-3 olefins and paraffins; Whereas Co-2(dhtp) (=Co-CPO-27 = Co-MOF-74) and Mg-2(dhtp) show an adsorption selectivity for the olefins ethene and propene over the paraffins ethane and propane, the zeolitic imidazolate framework ZIF-8 behaves in the opposite way and preferentially adsorbs the alkane. Consequently, in break-through experiments, the olefins or paraffins, respectively, can be separated.