Methane storage in zeolite-like carbon materials

Myrsini K. Antoniou*, Evmorfia K. Diamanti, Apostolos Enotiadis, Alfonso Policicchio, Konstantinos Dimos, Federica Ciuchi, Enrico Maccallini, Dimitrios Gournis, Raffaele G. Agostino

*Corresponding author for this work

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

High specific surface area zeolite-like carbon materials (CZ) were synthesized by combining the hard template method with the Chemical Vapor Deposition (CVD), using zeolite beta as solid template and acetylene as carbon precursor, at different reaction temperatures (1023, 1073 and 1123 K). CZ materials were characterized by X-ray diffraction, Scanning Electron Microscopy and nitrogen adsorption-desorption measurements. The nanoporous CZ materials possess surface areas up to 1130 m2/g and total pore volumes up to 0.75 mL/g while XRD data and SEM images show the successful replication of the structure and morphology of the zeolite particles into the final carbon materials. Methane storage properties at different temperatures (287, 298 and 313 K) have been investigated by Sievert's-type apparatus up to 3.5 MPa. The CZ materials exhibit a high and reversible methane storage capacity, with measured gravimetric uptake up to 8.0 wt% at 298 K and 3.5 MPa, a much higher value compared to the pristine zeolite beta which shows gravimetric methane adsorption capacity up to 1.5 wt% at the same conditions. The analysis of the obtained isotherm curves by Tóth model shows the same grade of homogeneity on sample porosity for all probed samples while the evaluation of the adsorption enthalpy at low pressures reveals a similar binding energy between the methane molecules and the samples' surfaces despite of their different long range order.

Original languageEnglish
Pages (from-to)16-22
Number of pages7
JournalMICROPOROUS AND MESOPOROUS MATERIALS
Volume188
Early online date08 Jan 2014
DOIs
Publication statusPublished - Apr 2014
Externally publishedYes

Keywords

  • Mesoporous carbon
  • Methane storage
  • Sieverts' apparatus
  • Tóth equation
  • Zeolite like materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Chemistry(all)
  • Condensed Matter Physics

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