Synthesis, characterization, and application of 1-butyl-3-methylimidazolium thiocyanate for extractive desulfurization of liquid fuel

Abstract

1-Butyl-3-methylimidazolium thiocyanate [BMIM]SCN has been presented on extractive desulfurization of liquid fuel. The FTIR, (1)H-NMR, and C-NMR have been discussed for the molecular confirmation of synthesized [BMIM]SCN. Further, thermal, conductivity, moisture content, viscosity, and solubility analyses of [BMIM]SCN were carried out. The effects of time, temperature, sulfur compounds, ultrasonication, and recycling of [BMIM]SCN on removal of dibenzothiophene from liquid fuel were also investigated. In extractive desulfurization, removal of dibenzothiophene in n-dodecane was 86.5 % for mass ratio of 1:1 in 30 min at 30 °C under the mild process conditions. [BMIM]SCN could be reused five times without a significant decrease in activity. Also, in the desulfurization of real fuels, multistage extraction was examined. The data and results provided in the present paper explore the significant insights of imidazolium-based ionic liquids as novel extractant for extractive desulfurization of liquid fuels.

Microwave Synthesis of Fused Pyrans by Humic Acid Supported Ionic Liquid Catalyst and Their Antimicrobial, Antioxidant, Toxicity Assessment, and Molecular Docking Studies

“…The decomposition can be determined by the appearance of ions corresponding to phenolic and carboxylic groups of HA . Almost similar temperature range of 244.6°C to 390.6°C was observed in the literatures for [bmim]SCN that confirmed the strong interaction of IL with HA .…”

“…Humic acid, a well‐known cheap material, is able to catalyze the condensation of cyclic‐1,3‐diketones with aromatic aldehydes, and the products are formed with comparatively high yields . The weak Van der Waals interaction and electrostatic interaction of [bmim]SCN IL might be responsible for the catalytic activity.…”

Synthesis, microstructure and volumetry of novel metal thiocyanate ionic liquids with [BMIM] cation

“…The blank IL presents very interesting properties and have been proposed as electrolyte for supercapacitors [31] and batteries, if mixed with lithium salts [32]. Also, it has a great potential for liquid fuel desulfuration [33], among other proposed applications.…”

Electrospun Polycaprolactone Scaffolds Using an Ionic Liquid as Alternative Solvent: Morphometric, Mechanical and Biological Properties

“…The mats analyzed by FTIR ( Figure 1) showed characteristics of PCL peaks located at 1725 cm À 1 of carbonyl ester bond and at 1200 cm À 1 of CO. [32] A peak in the range 3500-3750 cm À 1 due to quaternary amine salt formation with chlorine was observed in the PCL-IL sample. [33] The peaks located at 2900 and 2850 cm À 1 were related to the aliphatic asymmetric and symmetric (CÀ H) stretching vibration due to methyl groups from PCL and IL. Events at 1545 cm À 1 and 1500 cm À 1 are due to C=C and C=N stretching, and the peak at wave number 840 cm À 1 is due to CÀ N stretching vibration.…”