Search

Background: The non-covalent molecular interactions of 1-Ethyl-3- methylimidazolium chloride-aluminum chloride and pure alcohols are attracting attention in the industry, academic and research. Chemists, engineers, designers, and some researchers are interested in accessing trustworthy databases. Objective: 1-Ethyl-3-methylimidazolium chloride-aluminum chloride interacts with pure alcohols with non-covalent interactions. Physicochemical properties with their convincing data interpret the interactions occurring there. Mehtods: For that limiting apparent molar volume, molar refraction, and limiting apparent molar isentropic compressibility of the binary systems viz., ([EMIm]Cl/AlCl3) +methanol, ([EMIm]Cl/AlCl3) +ethanol, ([EMIm]Cl/AlCl3) +1-propanol, and ([EMIm]Cl/AlCl3)+ 1-butanol have been calculated using physicochemical properties i.e.,. density, refractive index, and speed of sound, respectively within the temperature range T=293.15K-318.15K (with the interval of 5K). Results: The ionic liquid strongly interacts with 1-butanol (106⋅φov =874.52 m3 mol-1, 106·RM = 211.13 m3 mol-1, and 10-11·φok= -0.10 m3 mol-1 Pa-1, 108· (∂φoE/∂T)P = 1.52 m3 mol-1 K-2) than other chosen primary alcohol at a higher temperature (318.15K). Among the individual ions, the 106·φov(ion) is higher for ALCI4-(522.96 m3 mol-1) than [EMIm]+ (351.56 m3 mol-1) at high temperature (318.15K) in 1-butanol. Conclusion: The molecular interactions occurring between the ionic liquid and solvent molecules are due to the structure-making capacity caused by intermolecular forces and non-covalent interactions. Where the 1-butanol strongly interacts with ionic liquids. In between the ions, the anaion interaction is greater than cation to solvents.

Additional file 2: Table S1. Chemical composition analysis of untreated South African sugarcane bagasse preparations used in this study. Table S2. Pretreatment outputs.

Additional file 1: Figure S1. HSQC NMR spectra (side chain region) of lignins isolated from depithed sugarcane bagasse (DB) using [TEA][HSO4] containing 20 wt% water and a solids loading of 20 wt% at 120 °C for 4 and 8 h. Representative substructures are shown. Figure S2. Particle size distribution of untreated pith (PB), long fiber (LFB) and short fiber bagasse (SFB) obtained after sieving within the pretreatment size fraction (0.18–0.85 mm). Inset values show calculated geometric mean particle length D50. Figure S3. Area-normalized size exclusion chromatograph of ionoSolv lignins isolated from industrially depithed (DB) and long fiber bagasse (LFB) pretreated in [TEA][HSO4] containing 20 wt% water at 120 °C for 4 h with 10 wt% solids loading. Mixed-D column, NMP eluent, 300 nm. Figure S4. Scanning electron micrographs of longitudinal view of, a pith bagasse before pretreatment, b pith bagasse after pretreatment, c long fiber bagasse before pretreatment and, d long fiber bagasse after pretreatment. Treatments were conducted in [TEA][HSO4] containing 20 wt% water and solids loading of 10 wt% at 120 °C for 4 h