Investigation of the Effect of the Method of Extraction Treatment on the Yield and Composition of Brown-Coal Bitumen
K. M. SHPAKODRAEV, S. I. ZHEREBTSOV, N. V. MALYSHENKO, K. S. VOTOLIN, Z. R. ISMAGILOV
Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
Keywords: bitumen, extraction, brown coal, intensification by ultrasound, beta-amyrin, behenyl alcohol, betulin, ferruginol
Pages: 621-628
Abstract
The paper presents the results of a study of the influence of the method of extraction processing of brown coal on the output of brown coal bitumen. It was shown that O-alkylating treatment allows increasing the yield of bitumoids, and the use of ultrasonic treatment during alkylation not only promotes further increase in the yield of bitumoids (up to 52.0 %) but also reduces the process duration from 6 to 0.5 h. Biologically active substances were identified in the composition of bitumen samples by means of gas chromatography - mass spectrometry.
DOI: 10.15372/CSD2021341
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