Deep desulfurization of oil refinery streams by extraction with ionic liquids

Title data

Eßer, Jochen ; Wasserscheid, Peter ; Jess, Andreas:
Deep desulfurization of oil refinery streams by extraction with ionic liquids.
In: Green Chemistry. Vol. 6 (2004) Issue 7 . - pp. 316-322.
ISSN 1463-9262
DOI: https://doi.org/10.1039/B407028C

Official URL:

Abstract in another language

Extraction of S- and N-compounds from gasoline and diesel oil by ionic liquids (ILs) indicates that such a process could be an alternative to common hydrodesulfurization (HDS) for deep desulfurization down to values of 10 ppm S or even lower. The results show the selective extraction properties of ILs, especially with regard to those S-compounds which are hard to remove by HDS, dibenzothiophene derivatives present in middle distillates like diesel oil. The application of mild process conditions (ambient pressure and temperature) and the fact that no hydrogen is needed, are additional advantages compared to HDS. Very promising ILs are [BMIM][OcSO] and [EMIM][EtSO], as they are halogen-free and available from relatively cheap starting materials. Extraction with ILs is not limited to diesel oil, but probably even more attractive for FCC-gasoline. Although HDS of S-species present in this gasoline constituent - mainly thiophenes - is relatively straightforward, a major drawback is the loss in octane number by olefin saturation, which favours extraction with ILs.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Chemical Engineering Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess Faculties
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 540 Chemistry 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited:	24 Apr 2015 09:06
Last Modified:	24 Apr 2015 09:06
URI:	https://eref.uni-bayreuth.de/id/eprint/10682