Improvement of the properties of 1-ethyl-3-methylimidazolium acetate using organic solvents for biofuel process
Improvement of the properties of 1-ethyl-3-methylimidazolium acetate using organic solvents for biofuel process
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使用有机溶剂改善生物燃料工艺中 1-乙基-3-甲基咪唑乙酸盐的性能
DOI：
10.1016/j.molliq.2019.03.144
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发表时间：
2019
影响因子：
6
通讯作者：
Tan Houzhang
中科院分区：
文献类型：
--
作者：
Yang Fuxin;Wang Xiaopo;Chen Qiang;Tan Houzhang
咪唑基离子液体广泛应用于生物燃料生产的生化过程中。离子液体通常具有较高的粘度，这会阻碍生物质的溶解过程，降低转移速率。本研究选择N，N-二甲基乙酰胺（DMA）、N，N-二甲基甲酰胺（DMF）、二甲基亚砜（DMSO）和吡啶（PYR）四种有机溶剂作为稀释剂来改善IL的性能，即1-乙基-3-甲基咪唑醋酸酯（[C2mim][OAc]），该溶剂在最近的研究中显示出在生物燃料过程中的前景。测定了二元混合物的实验密度和粘度，定量评价了有机溶剂对IL的影响。根据实验数据导出了热膨胀系数。计算了分子间相互作用的多余性质。
Imidazolium-based ionic liquids (ILs) are widely used in bio-chemical processes for biofuel production. Ionic liquids always possess high viscosity that would impede the dissolution process of biomass and decrease the transfer rate. In this work, four organic solvents ofN,N-dimethylacetamide (DMA),N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and pyridine (PYR) are chosen as the diluent to improve the properties of IL, namely, 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]) that shows promise for biofuel process in recent studies. The experimental density and viscosity of the binary mixtures are determined to quantitatively evaluate the effects of organic solvents on IL. The thermal expansion coefficient is derived from the experimental data. The excess properties are calculated to study the molecular interaction.