Journal of Sol-Gel Science and Technology

, Volume 69, Issue 2, pp 345–350 | Cite as

Sol–gel synthesis, characterization and water vapor adsorption properties of 1,1′-(1,6-hexanediyl)-bis(imidazolium)dichloride-silica hybrid material

  • Ananda S. Amarasekara
  • Ashfaqur Razzaq
  • Robert Caballero
  • Bernard Wiredu
Original Paper
First Online:
Received:
Accepted:

Abstract

1,1′-(1,6-hexanediyl)-bis(imidazolium)dichloride-silica hybrid material was prepared in 90 % yield by ammonia catalyzed sol–gel condensation of 1,1′-(1,6-hexanediyl)-bis[3-(3-triethoxysilylpropyl)-imidazolium]dichloride in aqueous ethanol. This novel ionic liquid-silica hybrid material can adsorp 27 % w/w water vapor in 90 min at room temperature and atmospheric pressure. This is a higher water adsorption capacity and rate than commercial desiccant Drierite which showed only 16 % w/w of water vapor adsorption and required 10 h to reach the maximum adsorption under identical conditions. The new adsorbent could be reused for five cycles without any significant loss in activity after regeneration by heating at 110 °C, for 24 h.

Keywords

Ionic liquid Silica-hybrid Imidazolium ion Sol–gel synthesis Water vapor adsorption 
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Notes

Acknowledgments

We thank American Chemical Society-PRF grant UR1-49436, NSF grants CBET-0929970, HRD-1036593 and USDA Grant CBG-2010-38821-21569 for financial support. RC Thanks ACS-SEED program for summer research internship.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Ananda S. Amarasekara
    • 1
  • Ashfaqur Razzaq
    • 1
  • Robert Caballero
    • 1
  • Bernard Wiredu
    • 1
  1. 1.Department of ChemistryPrairie View A&M UniversityPrairie ViewUSA

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