Email this article Changing the Structure of Brown Coal by Alkaline Activation with Thermal Shock
- Authors: Saberova V.A.1, Tamarkina Y.V.1, Kucherenko V.A.1
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Affiliations:
- Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine
- Issue: Vol 53, No 3 (2019)
- Pages: 135-144
- Section: Article
- URL: https://journals.rcsi.science/0361-5219/article/view/176806
- DOI: https://doi.org/10.3103/S0361521919030091
- ID: 176806
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Abstract
The solid thermolysis products (STPs) of brown coal formed upon alkaline activation with thermal shock (TS)—the rapid introduction of coal with KOH into a reactor heated to tTS ≤ 850°С—were studied. It was established that the structural fragmentation of coal (C–O and C–C bond heterolysis) dominated at tTS ≤ 400°С. With an increase in tTS to 850°С, the formation of subnanopores (≤1 nm) occurred simultaneously the growth of polyarenes and their condensation into polyarylenes, and it was limited by the diffusion of KOH (or K) and formed the final porous structure of STPs.
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About the authors
V. A. Saberova
Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine
Author for correspondence.
Email: Saberova@nas.gov.ua
Ukraine, Kiev, 02160
Yu. V. Tamarkina
Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine
Author for correspondence.
Email: Tamarkina@nas.gov.ua
Ukraine, Kiev, 02160
V. A. Kucherenko
Litvinenko Institute of Physical Organic Chemistry and Coal Chemistry, National Academy of Sciences of Ukraine
Author for correspondence.
Email: V.O.Kucherenko@nas.gov.ua
Ukraine, Kiev, 02160
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