I&EC 206 |
| The classical process for desulfurization of fuels is catalytic hydrogenation of sulfur compounds (HDS) into hydrogen sulfide, which is easy to remove. Ultra-low sulfur gasoline and diesel oil (< 10 ppm S) are needed for new engines and catalysts for further reduction of CO- and NOx-emissions. Ultra-low fuels by classical HDS require high operating and investment costs due to the declining activity of certain S-species like dibenzothiophenes (DBTs, see below); alternative processes for deep desulfurization are therefore desirable. A novel concept is liquid-liquid-extraction with Ionic Liquids. Early experiments with chloroaluminates showed very promising results. However, their industrial use is not desirable with respect to corrosion, environmental concerns, hydrolytic stability and regeneration aspects. Halogene free ionic liquids like e.g. ECOENG™212 ([EMIM][EtSO4]) and AMMOENG™102 were found to be more suitable for the extraction and will most likely overcome the drawbacks of the current technologies.
|
|
Ionic Liquids: Not Just Solvents Anymore OR Ionic Liquids: Parallel Futures (Sponsored by Green Chemistry and Engineering, Separation Science and Technology and Novel Chemistry with Industrial Applications Sub-Divisions)
1:30 PM-5:45 PM, Monday, 27 March 2006 Georgia World Congress Center -- B314, Oral
Division of Industrial and Engineering Chemistry |
