Rapid adsorption of alcohol biofuels by high surface area mesoporous carbons

Thomas J. Levario, Mingzhi Dai, Wei Yuan, Bryan D. Vogt, David R. Nielsen

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Surfactant templated mesoporous carbons were evaluated as biofuel adsorbents through characterization of equilibrium and kinetic behavior for both ethanol and n-butanol. Variations in synthetic conditions enabled facile tuning of specific surface area (500-1300 m2/g) and pore morphology (hexagonally packed cylindrical or BCC spherical pores). n-Butanol was more effectively adsorbed than ethanol for all mesoporous carbons, suggesting a mechanism of hydrophobic adsorption. The adsorbed alcohol capacity increased with elevated specific surface area of the adsorbents, irrespective of pore morphology. While adsorption capacity of these mesoporous carbons is comparable to commercially-available, hydrophobic polymer adsorbents of similar surface area, the pore morphology and structure of mesoporous carbons greatly influenced adsorption rates, enhancing them by up to 1-2 orders of magnitude over commercial polymer adsorbents. Multiple cycles of adsorbent regeneration did not impact the adsorption equilibrium or kinetics. The high chemical and thermal stability of mesoporous carbons provide potential significant advantages over other commonly examined biofuel adsorbents, such as polymers and zeolites.

Original languageEnglish (US)
Pages (from-to)107-114
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume148
Issue number1
DOIs
StatePublished - Jan 15 2012

Fingerprint

Biofuels
adsorbents
Adsorbents
alcohols
Alcohols
Carbon
Adsorption
adsorption
carbon
porosity
Polymers
1-Butanol
Butenes
Specific surface area
polymers
Ethanol
ethyl alcohol
Zeolites
Kinetics
Chemical stability

Keywords

  • Adsorption
  • Biofuels
  • In situ product recovery
  • Mesoporous carbon
  • n-Butanol

ASJC Scopus subject areas

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

Cite this

Rapid adsorption of alcohol biofuels by high surface area mesoporous carbons. / Levario, Thomas J.; Dai, Mingzhi; Yuan, Wei; Vogt, Bryan D.; Nielsen, David R.

In: Microporous and Mesoporous Materials, Vol. 148, No. 1, 15.01.2012, p. 107-114.

Research output: Contribution to journalArticle

Levario, Thomas J. ; Dai, Mingzhi ; Yuan, Wei ; Vogt, Bryan D. ; Nielsen, David R. / Rapid adsorption of alcohol biofuels by high surface area mesoporous carbons. In: Microporous and Mesoporous Materials. 2012 ; Vol. 148, No. 1. pp. 107-114.
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