Thermal analysis of mechanochemically activated humic acids of brown coal

Thermal analysis of mechanochemically activated humic acids of brown coal Научная публикация

Журнал

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

Вых. Данные

Год: 2020, Том: 1675, Номер: 1, Номер статьи : 012093, Страниц : DOI: 10.1088/1742-6596/1675/1/012093

Авторы

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

Организации

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

Полный текст от издателя

Опубликована в печати:	1 дек. 2020 г.
Опубликована online:	16 дек. 2020 г.

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