Enrichment of condensed arenes and dialkyl phthalates in the extracts from Geting bituminous coal
by Da-Ling Shi; Xian-Yong Wei; Bo Chen; Zhi-Min Zong
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 11, No. 2, 2016

Abstract: Geting bituminous coal was fractionated into extracts 1-5 (E₁-E₅) and residue by sequential extraction with petroleum ether, carbon disulfide (CDS), methanol, acetone, and isometric CDS/acetone mixed solvent at room temperature. According to analysis with a gas chromatograph/mass spectrometer, condensed arenes (CAs) and dialkyl phthalates (DAPs) were enriched into E₂ and E₄, respectively. The CAs and DAPs were further enriched by gradient elution in a medium-pressure preparative liquid chromatography. As a result, 3 CAs and 4 DAPs were successfully isolated in high purities. [Received: April 27, 2013; Accepted: April 2, 2014]

Online publication date: Thu, 21-Jan-2016

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