Composition of the wax fraction of bitumen from methylated brown coals

Journal Article · Wed Apr 15 00:00:00 EDT 2009 · Solid Fuel Chemistry (English Translation)

DOI:https://doi.org/10.3103/S0361521909020037· OSTI ID:21212828

Zherebtsov, S I; Moiseev, A I ^[1]

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1. Russian Academy of Sciences, Kemerovo (Russian Federation). Institute of Coal and Coal Chemistry

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 was found.

• OSTI ID: 21212828
• Journal Information: Solid Fuel Chemistry (English Translation), Vol. 43, Issue 2; Other Information: TN: Translation of Khimiya Tverdogo Topliva; (2); 12-21 (2009); Related Information: Translation of Khimiya Tverdogo Topliva; (2); 12-21 (2009); ISSN 0361-5219
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMENS
BROWN COAL
METHYLATION
INFRARED SPECTROMETERS
NUCLEAR MAGNETIC RESONANCE
WAXES
CHEMICAL COMPOSITION
ALKYLATION
ESTERIFICATION
METHANOL
YIELDS
HEXANE