Int. J. of Oil, Gas and Coal Technology   »   2016 Vol.11, No.2

 

 

Title: Enrichment of condensed arenes and dialkyl phthalates in the extracts from Geting bituminous coal

 

Authors: Da-Ling Shi; Xian-Yong Wei; Bo Chen; Zhi-Min Zong

 

Addresses:
Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China
Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China
Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China
Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China

 

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]

 

Keywords: fractional extraction; medium-pressure preparative liquid chromatography; MPLC; condensed arenes; dialkyl phthalates; DAPs; enrichment; bituminous coal; petroleum ether; carbon disulfide; CDS; methanol; acetone.

 

DOI: 10.1504/IJOGCT.2016.074283

 

Int. J. of Oil, Gas and Coal Technology, 2016 Vol.11, No.2, pp.180 - 192

 

Available online: 21 Jan 2016

 

 

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