Ethene/ethane and propene/propane separation via the olefin and paraffin selective metal-organic framework adsorbents CPO-27 and ZIF-8

Langmuir. 2013 Jul 9;29(27):8592-600. doi: 10.1021/la401471g. Epub 2013 Jun 26.

Abstract

Two types of metal-organic frameworks (MOFs) have been synthesized and evaluated in the separation of C2 and C3 olefins and paraffins. Whereas Co2(dhtp) (=Co-CPO-27 = Co-MOF-74) and Mg2(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 breakthrough experiments, the olefins or paraffins, respectively, can be separated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Alkenes / chemistry*
  • Cobalt / chemistry
  • Ethane / chemistry
  • Ethylenes / chemistry
  • Models, Molecular
  • Organometallic Compounds / chemical synthesis
  • Organometallic Compounds / chemistry*
  • Paraffin / chemistry*
  • Propane / chemistry
  • Zeolites / chemistry*

Substances

  • Alkenes
  • Ethylenes
  • Organometallic Compounds
  • Zeolites
  • Cobalt
  • Paraffin
  • ethylene
  • propylene
  • Ethane
  • Propane