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Title: Separation of Light Hydrocarbons through Selective Molecular Exclusion by a Microporous Metal–Organic Framework

Journal Article · · ChemPlusChem
 [1];  [2]; ORCiD logo [1]
  1. Department of Chemistry and Chemical Biology Rutgers University Piscataway NJ 08854 USA
  2. Department of Chemistry and Chemical Biology Rutgers University Piscataway NJ 08854 USA, Department of Chemistry Institute of Functional Material Chemistry Key Lab of Polyoxometalate Science of Ministry of Education Northeast Normal University Changchun Jilin 130024 P. R. China

Abstract [Zn 2 (sdc) 2 (bpe)] (compound  1 , sdc=4,4′‐stilbenedicarboxylate, bpe=1,2‐bis(4‐pyridyl)ethane)), a doubly interpenetrated, pillared‐layer microporous metal–organic framework has been solvothermally synthesized and structurally characterized by single‐crystal X‐ray diffraction. The structure features a common Zn 2 (COO) 4 paddle‐wheel building unit. Compound  1 undergoes structural change upon solvent removal. The activated phase (compound  2 ) displays permanent porosity, excellent thermal/moisture stability, and interesting hydrocarbon adsorption properties. Gas adsorption experiments show that compound  1 selectively adsorbs saturated/unsaturated C 2 hydrocarbons but excludes C 3 and C 4 hydrocarbons at room temperature. We have collected single‐component adsorption isotherms of six light hydrocarbons and calculated adsorption selectivities of various binary hydrocarbon mixtures by ideal adsorbed solution theory (IAST). The results show that compound  1 possesses remarkably high selectivity towards C 2 over C 3 /C 4 hydrocarbons and the separation is achieved by selective molecular exclusion.

Sponsoring Organization:
USDOE
OSTI ID:
1401445
Journal Information:
ChemPlusChem, Journal Name: ChemPlusChem Vol. 81 Journal Issue: 8; ISSN 2192-6506
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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