Abstract
A rapid and simple method has been established for the isolation of condensed thiophenes (PASH) and other types of aromatic sulfur compounds (S-PAC) based on ligand-exchange chromatography (LEC). This procedure has been applied to the aromatic fractions of a crude oil, a coal extract, and a hydrogenated coal liquid to obtain PASH and S-PAC fractions. Both fractions were examined by capillary column gas chromatography with flame ionization and flame photometric detection and by gas chromatography/mass spectrometry. A variety of previously unidentified S-PAC were found in these samples. Alkyl phenyl disulfides were the major S-PAC in the crude oil, and alkylphenylthiophene and propyl naphthyl sulfide were found in the coal extract, while alkyldihydrobenzothiophenes were isolated in the hydrogenated coal liquid. Structural characteristics of the identified S-PAC are discussed and compared with sample properties. The interaction of PASH and S-PAC with PdClz in LEC used in this study was also discussed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
