Open AccessStudy of the porous structure of carbon sorbents based on Kuzbass coal at various stages of metamorphism
Author(s) -
I. Yu. Zykov,
Yu. N. Dudnikova,
I. N. Fedorova,
R. Z. Ismagilov,
E. S. Mikhaylova
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1749/1/012025
Subject(s) - coal , carbonization , sorbent , microporous material , carbon fibers , caking , volume (thermodynamics) , adsorption , chemical engineering , materials science , potassium hydroxide , porosity , nitrogen , specific surface area , mineralogy , chemistry , organic chemistry , composite material , thermodynamics , physics , composite number , engineering , catalysis
The work is devoted to the investigation of the porous structure of carbon sorbents prepared on the basis of long-flame, gas, low-caking and lean coal of Kuzbass. Carbon sorbents were obtained by alkaline activation with potassium hydroxide at 800 °C and a KOH/coal (RKOH) ratio of 0.5 g/g. Using the method of low-temperature nitrogen adsorption (analyzer ASAP-2400), the values of the textural characteristics of carbon sorbents based on coal of different stages of metamorphism were determined: pore volume, micropore volume and specific surface area. It is shown that the carbon sorbents obtained in this work are predominantly microporous (more than 80% by volume). A carbon sorbent based on long-flame coal has the greatest texture characteristics; its specific surface area is 1220 m2/g and a pore volume of 0.54 cm3/g.