Influence of Chemical Modification on the Structure, Composition, and Properties of Lignite Humic Acids


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Abstract

The influence of chemical modification on the functional–group composition of humic acids derived from Tisul’sk lignite (Kansko-Achinsk Basin) is studied. The structural changes of the humic acids as a result of destructive alkylation of n-butanol and oxidation of hydrogen peroxide are compared, by means of IR, Raman, ESR, and NMR spectroscopy. Alkylation of the humic acids changes the composition and content of the aliphatic fragments in their structure. Oxidation by hydrogen peroxide increases the content of acid-bearing groups.

About the authors

S. I. Zherebtsov

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: sizh@yandex.ru
Russian Federation, Kemerovo

N. V. Malyshenko

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: profkemsc@yandex.ru
Russian Federation, Kemerovo

L. V. Bryukhovetskaya

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: blv3010@mail.ru
Russian Federation, Kemerovo

S. Yu. Lyrshchikov

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: serstud@mail.ru
Russian Federation, Kemerovo

A. P. Nikitin

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: NikitinAndrey@yandex.ru
Russian Federation, Kemerovo

Z. R. Ismagilov

Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: zinfer1@mail.ru
Russian Federation, Kemerovo

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