Composition and Properties of Extraction Resins of Bitumens and Fulvic Acids of Brown Coal

作者：Shpakodraev, K. M.^*; Zherebtsov, S. I.; Malyshenko, N. V.; Votolin, K. S.; Ismagilov, Z. R.; Xintai, Su

来源：Solid Fuel Chemistry, 2023, 57(5): 307-313.

DOI：10.3103/S0361521923050063

• brown coal
• brown coal bitumen
• extraction resins
• fulvic acids
• phytostimulating activity

Proximate and ultimate analysis and C-13 NMR and IR spectroscopy were used to characterize the samples of brown coal from the Tyulgan deposit of the South Ural basin (TBC), the naturally oxidized form of brown coal from the Tisulsky deposit of the Kansk-Achinsk basin (TBCO), and fulvic acids obtained from it. The component composition of bitumen was studied using gas chromatography-mass spectrometry (GC-MS) analysis. Data of a study on the phytostimulating activity of fulvic acids and their mixtures with the saponifiable component of the resin of extraction bitumens in relation to wheat seeds of the Iren variety were presented. It was shown that the use of the saponifiable component of bitumen resins contributed to an increase in the phytostimulating activity.