Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7006475 | Chemical Engineering Research and Design | 2016 | 9 Pages |
Abstract
Four nitrate-based ionic liquids (ILs), i.e. 1-Butyl-3-methylimdazolium nitrate ([Bmim][NO3]), 1-Octyl-3-methylimdazolium nitrate ([Omim][NO3]), 1-Butylpyridinium nitrate ([BPy][NO3]), and 1-Octylpyridinium nitrate ([OPy][NO3]) were synthesized and used as extractant for the removal of dibenzothiophene (DBT) from the model oil. The effects of cation type, cation's alkyl chain length, extraction time, temperature, and IL/model oil volume ratio on the DBT removal were investigated. The ILs demonstrated high extraction performance with this order: [Omim][NO3] > [OPy][NO3] â [Bmim][NO3] > ([BPy][NO3]. The results suggested that [Omim][NO3] could be utilized as an appropriate solvent for the extractive desulfurization of fuel oil. It could reduce 94.8% of sulfur content in model oil from 500 to 26 ppm at 25 °C and IL/model oil volume ratio of 1:1 in a single-stage extraction. [Omim][NO3] could be reused six times without an impressive decrease in its activity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Mahdieh Safa, Babak Mokhtarani, Hamid Reza Mortaheb,