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Adsorption

, Volume 14, Issue 2–3, pp 283–287 | Cite as

Potassium hydroxide modified active carbon for adsorptive refrigerators

  • Bronislaw Buczek
  • Eliza Wolak
Article

Abstract

Active carbon-methanol pair appears to be suitable for adsorptive cooling systems. The porous structure of commercial active carbon was modified by potassium hydroxide treatment at 750 °C. Such treatment develops the specific surface area of carbon, changes nature of its surface and significantly increases the heat of wetting. The applied way for active carbon modification gives possibility of modeling porous structure, character surface and heat effects of carbonaceous materials for adsorptive refrigerators.

Keywords

Refrigeration Active carbon-methanol pair Heat effects of adsorption 

Abbreviations

CwA

specific heat of methanol, J/g °C

CwC

specific heat of carbon, J/g °C

E0

characteristic energy of adsorption, kJ/mol

Q

heat of wetting, J

SBET

specific surface, m2/g

Sme

mesopores surface area, m2/g

W0

volume of micropores, cm3/g

VA

volume of methanol used in the measurement, cm3

Vp

volume of pores, cm3/g

dA

density of methanol, g/cm3

dHK

slit pore width, nm

mC

mass of carbon, g

ΔT

increase of temperature, °C

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Faculty of Fuels and EnergyAGH-University of Science and TechnologyCracowPoland

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