Thermal analysis of mechanochemically activated humic acids of brown coal

Thermal analysis of mechanochemically activated humic acids of brown coal Full article

Journal

Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596

Output data

Year: 2020, Volume: 1675, Number: 1, Article number : 012093, Pages count : DOI: 10.1088/1742-6596/1675/1/012093

Authors

Mamylov S.G. ¹ , Skripkina T.S. ¹ , Tikhova V.D. ² , Bychkov A.L. ¹ , Lomovsky O.I. ¹

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry, SB RAS, Novosibirsk, Russian Federation
2	N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, SB RAS, Novosibirsk, Russian Federation

Humic acids of brown coal before and after mechanochemical treatment under various conditions were studied by TG and DSC (carried out both in air and in an inert atmosphere, with the temperature range of 300-800 K), and gel permeation chromatography. The obtained data were used to calculate the values of the energy of activation and the thermal effects for each stage of thermal decomposition. Influence of mechanochemical treatment upon humic acids thermolysis stages was shown. Hypothesis of thermal stages chemical interpretation was proposed. The staged decomposition of humic acids includes the stages of decarboxylation of acid groups of various types. A change in the staging of decomposition is observed upon mechanochemical introduction of alkali into humic acids, associated with the conversion of acid groups to the salt form. © Published under licence by IOP Publishing Ltd.

Mamylov S.G. , Skripkina T.S. , Tikhova V.D. , Bychkov A.L. , Lomovsky O.I.
Thermal analysis of mechanochemically activated humic acids of brown coal

Journal of Physics: Conference Series. 2020. V.1675. N1. 012093 . DOI: 10.1088/1742-6596/1675/1/012093 Scopus РИНЦ

Full text from publisher

Published print:	Dec 1, 2020
Published online:	Dec 16, 2020

Scopus	2-s2.0-85098136484
Elibrary	45095886
OpenAlex	W3115957617