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投稿时间：2016-02-29 修订日期：2016-03-02 录用日期：2016-03-03 网络发布日期：2016-07-21
投稿时间：2016-02-29 修订日期：2016-03-02 录用日期：2016-03-03 网络发布日期：2016-07-21
中文摘要: 以离子液体1-丁基-3-甲基咪唑三氟甲烷磺酸盐（[BMIM]OTf）、1-辛基-3-甲基咪唑双三氟甲磺酰亚胺盐（[OMIM]NTf2）为溶剂，考察温度、PC添加量对SiCl4溶解量的影响，并研究离子液体在不同条件下的电导率。结果表明，在不同温度下，[OMIM]NTf2的溶解效果比[BMIM]OTf好，两种离子液体对SiCl4的溶解效果随温度的降低而上升，0 ℃时，[OMIM]NTf2溶解量达到最大为0.6 g/mL。PC可溶解少量SiCl4，平均稳定在~0.06 g/mL，且溶解量受温度影响较小。离子液体电导率较低，[BMIM]OTf较[OMIM]NTf2的电导率要高，随着温度的升高电导率增大，添加PC后两者电导率都显著提升。建议在0 ℃下利用[OMIM]NTf2溶解SiCl4，同时按照离子液体、PC按1︰1质量比配制电解液，此时电导率为15.08 mS/cm。
Abstract:Effects of temperature and addition of PC on dissolving of SiCl4 from polysilicon industry were investigated applying ionic liquids (ILs) called 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]OTf) and 1-octyl-3-methylimidazolium bis ((trifluoromethyl) sulfonyl) imide ([OMIM]NTf2) as solvents. ILs conductivity under different conditions was examined. The results show that [OMIM]NTf2 has better performance than [BMIM]OTf in dissolving load at different temperature. Dissolving load for SiCl4 in both ionic liquids rises with drop of temperature. [OMIM]NTf2 obtains a maximum dissolving load of 0.6 g/mL at 0℃. Little SiCl4 can be dissolved in PC with load of about 0.06 g/mL on average and temperature has little influence on load. Conductivity of ILs is low, and [BMIM]OTf has higher conductivity than [OMIM]NTf2. Conductivity of ILs rises with increase of temperature with a dramatic rise upon addition of some PC. It is proposed that [OMIM]NTf2 should be chosen as solvent to dissolve SiCl4 with mass ratio of [OMIM]NTf2 and SiCl4 of 1︰1 at 0 ℃ to realize conductivity of 15.08 mS/cm.
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基金项目:国家自然科学基金面上项目（51474146；上海市自然科学基金项目（14ZR1416900）；上海第二工业大学研究生项目基金（A01GY16F030）；上海第二工业大学校重点学科建设项目（XXKZD1602）
引用文本：
程成,张承龙,王景伟,白建峰,苑文仪,徐敏.离子液体电导率及溶解硅产业副产物SiCl4研究[J].有色金属（冶炼部分）,2016(8):31-34.
Cheng Cheng,Zhang Chenglong,Wang Jingwei,Bai Jianfeng,Yuan Wenyi,Xu Min.Study on Ionic Liquids Conductivity and Dissolving by-Product SiCl4 from Polysilicon Industry[J].Nonferrous Metals (Extractive Metallurgy),2016(8):31-34.
程成,张承龙,王景伟,白建峰,苑文仪,徐敏.离子液体电导率及溶解硅产业副产物SiCl4研究[J].有色金属（冶炼部分）,2016(8):31-34.
Cheng Cheng,Zhang Chenglong,Wang Jingwei,Bai Jianfeng,Yuan Wenyi,Xu Min.Study on Ionic Liquids Conductivity and Dissolving by-Product SiCl4 from Polysilicon Industry[J].Nonferrous Metals (Extractive Metallurgy),2016(8):31-34.
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