Deep desulfurization of oil refinery streams by extraction with ionic liquids

Eßer, Jochen; Wasserscheid, Peter; Jess, Andreas

doi:10.1039/b407028c

Cited by 545 publications

(250 citation statements)

References 20 publications

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“…Extraction of S-and Ncompounds from gasoline and diesel oil by 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 (57). The results showed the selective extraction properties of ILs, especially with regard to those S-compounds which are hard to remove by HDS (e.g., dibenzothiophene derivatives present in middle distillates like diesel oil).…”

Section: Koelmentioning

confidence: 76%

Ionic Liquids in Chemical Analysis

Koel

2005

Critical Reviews in Analytical Chemistry

329

195

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Room-temperature ionic liquids are salts with a melting point close to or below room temperature. They form liquids composed in the majority of ions. This gives these materials the potential to behave very differently when they are used as solvents compared to conventional molecular liquids. The search for their application is growing in every area of analytical chemistryelectrochemistry, chromatography, electrophoresis, and even mass spectrometry. The literature on ionic liquids is growing almost exponentially. The basis for this activity is the easy preparation of salts with different ion constituents. This ability might best be described as the "chemical tunability" of ionic liquids, a class of solvents with members possessing similar physical properties but having different chemical behavior. Their good solvating properties, together with large spectral transparency, make ionic liquids suitable solvents for spectroscopic measurements. It has been demonstrated that task-specific ionic liquids have advantages compared to common solvents used as separation media in liquid-liquid extraction processes achieving high efficiencies and selectivities of separation. The main advantage for other applications of ionic liquids in analytical chemistry lies in their low volatility which makes them useful as solvents for working in both high-temperature (gas chromatography (GC) stationary phases) and high-vacuum (MALDI matrixes) environments. When using an ionic liquid as an electrolyte medium, it is possible to achieve a broader range of operational temperatures and conditions relative to other conventional electrolytic media, and this makes ionic liquids promising materials in various electrochemical devices (e.g., batteries, fuel cells, sensors, and electrochromic windows).

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Section: Koelmentioning

confidence: 76%

Ionic Liquids in Chemical Analysis

Koel

2005

Critical Reviews in Analytical Chemistry

329

195

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“…RTLs are being considered for selective extraction either in macro or micro scale. The isolation of target compounds from chemical process systems for instance alcohols from fermentation liquors (Chapeaux et al, 2008;Swatloski et al, 2002;Najdanovic-Visak et al, 2002), aromatic compounds from petroleum products (Arce et al, 2007a,b;Arce et al, 2009;Arce et al, 2008), aromatic sulfur-containing compounds (Mochizuki & Sugawara, 2008;Alonso et al, 2007;E er et al, 2004) from diesel-fuel represent the use of ILs in large-scale processes. In turn liquid-phase microextraction techniques such as dispersive, single-drop, hollowfiber based liquid-phase microextractions and solid-phase with liquid film represent miniaturized systems also utilizing ionic liquids as the extraction solvents.…”

Section: Liquid-liquid Extraction By Hydrophobic Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids in Separation Techniques

Flieger¹,

Czajkowska-Żelazko²

2011

Applications of Ionic Liquids in Science and Technology

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“…Based on the Ncontaining products in the oil stream the nature of the ionic liquid can vary accordingly. [31][32][33][34] The presence of H2O2 and POM component of the Tris-LDH-La(PW11)2 catalyst promote the formation of POM-based peroxo species responsible for the oxygen transfer and subsequent oxidation of the substrate to the corresponding 4-picoline-Noxide compound. The ability of oxygen transfer via the generation of peroxo species in polyoxometalate systems is well known and has been studied extensively by various groups previously.…”

Section: Resultsmentioning

confidence: 99%

Facile Immobilization of a Lewis Acid Polyoxometalate onto Layered Double Hydroxides for Highly Efficient N‐Oxidation of Pyridine‐Based Derivatives and Denitrogenation

Yao

Miras

et al. 2015

ChemCatChem

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N-Oxides are a class of highly important compounds which are widely used as synthetic intermediates. In this paper, we demonstrate for the first time the use of a polyoxometalate (POM) based composite material, as highly efficient heterogeneous catalyst for the N-oxidation of pyridines and its derivatives in the presence of H2O2 at room temperature. The composite was prepared by intercalation of the [La(PW11O39)2] 11-anion into a tris(hydroxymethyl)aminomethane (Tris) modified layered double hydroxides (LDHs). Additionally, the Tris-LDH-La(PW11)2-based catalyst has been employed for the denitrogenation of a model oil mixture in the presence of [bmim]BF4 and H2O2. Deep denitrogenation can be achieved in 40 minutes at 75 °C. Finally, the heterogeneous catalyst can be easily recovered and reused at least ten times without measurable decrease of the catalytic activity and disintegration of the Tris-LDH-La(PW11)2 structure.

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Deep desulfurization of oil refinery streams by extraction with ionic liquids

Cited by 545 publications

References 20 publications

Ionic Liquids in Chemical Analysis

Ionic Liquids in Chemical Analysis

Ionic Liquids in Separation Techniques

Facile Immobilization of a Lewis Acid Polyoxometalate onto Layered Double Hydroxides for Highly Efficient N‐Oxidation of Pyridine‐Based Derivatives and Denitrogenation

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