Influence of activation on the pore structure of adsorbents obtained from coal–alkali mixtures
- Authors: Nechaeva T.S.1, Fedorova N.I.1, Ismagilov Z.R.1
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Affiliations:
- Federal Coal and Coal-Chemistry Research Center, Siberian Branch
- Issue: Vol 60, No 6 (2017)
- Pages: 239-242
- Section: Chemistry
- URL: https://journals.rcsi.science/1068-364X/article/view/226283
- DOI: https://doi.org/10.3103/S1068364X17060072
- ID: 226283
Cite item
Abstract
The activation of carbon sorbents in CO2 is investigated. The sorbents are produced by the thermolysis of naturally oxidized SS coal steeped in potassium hydroxide, with an alkali/coal ratio RKOH = 0.01 and 0.05 g/g. The influence of CO2 activation on the texture of the sorbents obtained is established. After 10-min activation, the increase in specific surface area of the sorbents is a maximum (about 100%). Longer activation increases the loss of material. The pore volume formed on activation is proportional to the proportion of carbon-bearing material removed. The volume of adsorbing pores formed in the sorbents is greatest when the loss of material is 25–35%.
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About the authors
T. S. Nechaeva
Federal Coal and Coal-Chemistry Research Center, Siberian Branch
Author for correspondence.
Email: maninats@iccms.sbras.ru
Russian Federation, Kemerovo
N. I. Fedorova
Federal Coal and Coal-Chemistry Research Center, Siberian Branch
Email: maninats@iccms.sbras.ru
Russian Federation, Kemerovo
Z. R. Ismagilov
Federal Coal and Coal-Chemistry Research Center, Siberian Branch
Email: maninats@iccms.sbras.ru
Russian Federation, Kemerovo