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Ionic Liquids in Refinery Desulfurization : Comparison between Biphasic and Supported Ionic Liquid Phase Suspension Processes

Titelangaben

Kuhlmann, Esther ; Haumann, Marco ; Jess, Andreas ; Seeberger, Andreas ; Wasserscheid, Peter:
Ionic Liquids in Refinery Desulfurization : Comparison between Biphasic and Supported Ionic Liquid Phase Suspension Processes.
In: ChemSusChem. Bd. 2 (2009) Heft 10 . - S. 969-977.
ISSN 1864-564X
DOI: https://doi.org/10.1002/cssc.200900142

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

The desulfurization of fuel compounds in the presence of ionic liquids is reported. For this purpose, the desulfurization efficiency of a variety of imidazolium phosphate ionic liquids has been tested. Dibenzothiophene/dodecane and butylmercaptan/decane mixtures were used as model systems. Single-stage extractions reduced the sulfur content from 500 ppm to 200 ppm. In multistage extractions the sulfur content could be lowered to less than 10 ppm within seven stages. Regeneration of the ionic liquid was achieved by distillation or re-extraction procedures. Supported ionic liquid phase (SILP) materials, obtained by dispersing the ionic liquid as a thin film on highly porous silica, exhibited a significantly higher extraction performance owing to their larger surface areas, reducing the sulfur content to less than 100 ppm in one stage. Multistage extraction with these SILP materials reduced the sulfur level to 50 ppm in the second stage. The SILP technology offers very efficient utilization of ionic liquids and circumvents mass transport limitations because of the small film thickness and large surface area, and allows application of the simple packed-bed column extraction technique.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: desulfurization; extraction ; ionic liquids; physisorption; supported materials
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: 02 Feb 2015 10:25
Letzte Änderung: 02 Feb 2015 10:25
URI: https://eref.uni-bayreuth.de/id/eprint/6144