Colloid Journal

, Volume 68, Issue 2, pp 182–188

Preparation of ultramicro-, micro-, and supermicroporous carbon adsorbents by template procedure

  • O. K. Krasil’nikova
  • A. M. Voloshchuk
  • A. E. Evsyukhin
  • N. Y. Lomovskaya
Article

DOI: 10.1134/S1061933X06020098

Cite this article as:
Krasil’nikova, O.K., Voloshchuk, A.M., Evsyukhin, A.E. et al. Colloid J (2006) 68: 182. doi:10.1134/S1061933X06020098

Abstract

The new template procedure for preparing ultramicro-, micro-, and supermicroporous carbon adsorbents is proposed on the basis of the use of two polymers with different thermal stabilities as a template matrix and a carbonizable carbon source. The polymeric template matrix is removed by thermal decomposition in the low-temperature pyrolysis of the polymer mixture, whereas the second polymer component of a mixture is transformed into a carbonizate. The resultant monolithic carbonizate is the polymeric matrix replica and represents a molecular-sieve ultramicroporous carbon adsorbent, which adsorbs water vapor at 293 K and does not adsorb nitrogen vapor at 77 K. The activation of this carbonizate with water vapor leads to a series of micro-and supermicroporous carbon adsorbents with a broad range of the parameters of a pore structure: BET specific surface area SBET is 610–2130 m2/g, micropore volume W0 is 0.20–0.69 cm3/g, micropore half-width x0 (slit model) is 0.20–0.70 nm, mesopore specific area Sme is 20–1000 m2/g, and characteristic adsorption energy E0 is 15.6–27.4 kJ/mol.

Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • O. K. Krasil’nikova
    • 1
  • A. M. Voloshchuk
    • 1
  • A. E. Evsyukhin
    • 1
  • N. Y. Lomovskaya
    • 1
  1. 1.Frumkin Institute of Physical Chemistry and ElectrochemistryRussian Academy of SciencesMoscowRussia