Formation of the pore structure of brown coal upon thermolysis with potassium hydroxide

Описание

Тип публикации: статья из журнала

Год издания: 2009

Идентификатор DOI: 10.3103/S0361521909050097

Ключевые слова: Active carbon, Brown coal, Condensation process, Micro-pore structures, Micropore fractions, Micropore volumes, Micropore-size distribution, Pore formation, Porosity material, Structural fragments, Structure characteristic, Total pore volume, Weight ratios, Coal industry, Lignite, Microporosity, Potassium, Thermolysis, Potassium hydroxide

Аннотация: The pore-structure characteristics of active carbons prepared by the thermolysis (800A degrees C) of brown coal impregnated with potassium hydroxide were studied. The dependence of the specific surface area, total pore volume, micropore volume, micropore fraction, and micropore size distribution on the KOH/coal weight ratio R (KOH)Показать полностьюa parts per thousand currency sign 1.0 g/g was found. Condensation processes with the formation of a low-porosity material were predominant at low ratios of R (KOH) a parts per thousand currency sign 0.1 g/g. The development of a micropore structure was observed at R (KOH) a parts per thousand yen 0.1 g/g, and it increased as R (KOH) was increased to 1.0 g/g. It was hypothesized that pore formation was due to the thermally initiated reactions of the structural fragments of coal with KOH molecules, which occurred within the framework of coal.

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Издание

Журнал: SOLID FUEL CHEMISTRY

Выпуск журнала: Vol. 43, Is. 5

Номера страниц: 309-313

ISSN журнала: 03615219

Место издания: NEW YORK

Издатель: ALLERTON PRESS INC

Авторы

  • Shendrik T.G. (Litvinenko Institute of Physicoorganic Chemistry and Coal Chemistry,National Academy of Sciences of Ukraine)
  • Tamarkina Y.V. (Litvinenko Institute of Physicoorganic Chemistry and Coal Chemistry,National Academy of Sciences of Ukraine)
  • Khabarova T.V. (Litvinenko Institute of Physicoorganic Chemistry and Coal Chemistry,National Academy of Sciences of Ukraine)
  • Kucherenko V.A. (Litvinenko Institute of Physicoorganic Chemistry and Coal Chemistry,National Academy of Sciences of Ukraine)
  • Chesnokov N.V. (Siberian Federal University)
  • Kuznetsov B.N. (Siberian Federal University)

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