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Jess, Andreas ; Eßer, Jochen:
Deep desulfurization of fuels by extraction with ionic liquids.
In:
Rogers, Robin D. (Hrsg.): Ionic liquids III : Transformations and processes. -
Cary, NC
: Oxford University Press
,
2005
. - S. 83-96
. - (ACS Symposium Series
; 902
)
ISBN 0-8412-3894-4
DOI: https://doi.org/10.1021/bk-2005-0902.ch007
Abstract
In recent years, much attention has been given to deep desulfurization of diesel oil and gasoline, since exhaust gases containing SOx cause air pollution and acid rain. Moreover, a lower sulfur content than today - still several 100 ppm S in many countries - would allow the use of new engines and catalytic systems. Therefore, the S-level in fuels will be drastically decreased in Europe and other countries in 2005 down to at least 50 ppm. The current process of catalytic hydrodesulfurization (HDS) is limited for such ultra-low sulfur fuels, respecttively the expenses are high to meet these future requirements. Alternative processes are therefore desirable. This paper presents a potential alternative, the (reversible) extraction of organic S-compounds by ionic liquids (ILs), e. g. by butylmethylinudazolium(BMIM)-chloroalununate, but also by halogen-free ILs like BMIM-octylsulfate. In the presented experiments, extraction of model oils (dibenzothiophene derivatives mixed with dodecane) as well as of a real diesel oil were investigated. The results show the excellent and selective extraction properties of ILs, especially with regard to those S-compounds, which are very hard to remove by HDS. In addition, organic N-compounds like indole are also extracted with an even much higher efficiency. The application of mild process conditions (ambient pressure and temperature) and the fact that hydrogen is not needed, are additional advantages of this new concept in comparison to HDS. The estimation of the basic parameters of a technical extraction process with ILs will be given.
Weitere Angaben
| Publikationsform: | Aufsatz in einem Buch |
|---|---|
| Begutachteter Beitrag: | Nein |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik > Lehrstuhl Chemische Verfahrenstechnik - Univ.-Prof. Dr.-Ing. Andreas Jess Fakultäten |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 660 Chemische Verfahrenstechnik |
| Eingestellt am: | 24 Apr 2015 09:17 |
| Letzte Änderung: | 03 Jul 2015 06:48 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/11150 |