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Composition of the wax fraction of bitumen from methylated brown coals

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Abstract

Changes in the group and individual compositions of the wax fractions of bitumen in the course of brown coal methylation were studied. With the use of IR and NMR spectroscopy and chromatography-mass spectrometry, it was found that the esters of methylated coal waxes consisted of the native esters of fatty acids and the methyl esters of these acids formed as a result of an alkylation treatment. Esterification and transesterification were predominant among the reactions of aliphatic fraction components. A positive effect of methanol alkylation on an increase in the yield of the aliphatic fractions of was found.

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Authors and Affiliations

  1. Institute of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, ul. Rukavishnikova 21, Kemerovo, 650610, Russia

    S. I. Zherebtsov & A. I. Moiseev

Authors
  1. S. I. Zherebtsov
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  2. A. I. Moiseev
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Correspondence to S. I. Zherebtsov.

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Original Russian Text © S.I. Zherebtsov, A.I. Moiseev, 2009, published in Khimiya Tverdogo Topliva, 2009, No. 2, pp. 12–21.

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Zherebtsov, S.I., Moiseev, A.I. Composition of the wax fraction of bitumen from methylated brown coals. Soil Fuel Chem. 43, 71–79 (2009). https://doi.org/10.3103/S0361521909020037

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  • DOI: https://doi.org/10.3103/S0361521909020037

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