| 离子液体[bmim]BF_4与溶剂DMSO相互作用的研究 |
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| 引用本文： | 王远,罗小玲,罗瑞峰,邢丽杰,郝家勇.离子液体[bmim]BF_4与溶剂DMSO相互作用的研究[J].化学世界,2011(6). |
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| 作者姓名： | 王远 罗小玲 罗瑞峰 邢丽杰 郝家勇 |
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| 作者单位： | 新疆农垦科学院;农业部食品质量监督检验测试中心; |
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| 摘 要： | 在298.1~323.15 K范围内,测定了1-丁基-3-甲基咪唑四氟硼酸盐离子液体(bmim]BF4)与DMSO混合体系的密度和粘度,研究发现:随着DMSO加入量的增加,混合体系的密度和粘度均减小。在此条件下,计算了此离子液体的粘度活化参数,η∞、Ea、性粘度B-系数及过量对数粘度,结果表明:Ea与DMSO的摩尔分数成线性关系,线性方程为:Ea=-0.836xDMSO+2.587(r=0.98),粘度B-系数随温度的升高而减小,bmim]BF4-DMSO混合体系的过量对数粘度在全组成范围内均为正值。
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| 关 键 词： | 离子液体 密度 粘度 活化参数 |
Research on Interaction of Ionic Liquid BF4 and Solvent DMSO |
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| WANG Yuan,LUO Xiao-ling,LUO Rui-feng,XING Li-jie,HAO Jia-yong,Ministry of Agricultum,Xinjiang Shihezi ,China.Research on Interaction of Ionic Liquid BF4 and Solvent DMSO[J].Chemical World,2011(6). |
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| Authors: | WANG Yuan LUO Xiao-ling LUO Rui-feng XING Li-jie HAO Jia-yong Ministry of Agricultum Xinjiang Shihezi China |
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| Affiliation: | WANG Yuan,LUO Xiao-ling,LUO Rui-feng,XING Li-jie,HAO Jia-yong(Xingjiang Academy of Agricultural Reclamation Science,Food Quality Supervision and Testing Center(Shihezi),Ministry of Agricultum,Xinjiang Shihezi 832000,China) |
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| Abstract: | The densities and viscosities of the mixed system,1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid( BF4) and DMSO,were measured in the temperature range of 298.15~323.15 K.The results showes that both the density and viscosity of the mixed system decreased with increasing DMSO.The viscosity activation parameters of ionic liquid,such as η∞,Ea,viscosity B-coefficients and excess logarithm viscosity,were calculated.There is a linear relationship between Ea and DMSO molar content,i.e.Ea/kJ·mol-1=-0.836xDMSO+2.587(r=0.98).The viscosity B-coefficients decreases with increasing temperature,and the excess logarithm viscosities of the BF4-DMSO mixed system are all positive in the whole composition range. |
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| Keywords: | ionic liquid density viscosity activation parameter |
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