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离子液体体系ZnCl₂-尿素的制备及性质

Preparation and Properties of Ionic Liquid System ZnCl₂-Urea

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【Author】 ZHAO Di-shun1,LI Xue-gang1,LIU Bao-you2,XU Zhi-ce1,WANG Na3 (1.College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China;2.College of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China;3.College of Science,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China)

【机构】河北科技大学化学与制药工程学院；河北科技大学环境科学与工程学院；河北科技大学理学院河北石家庄050018；河北石家庄050018；

【摘要】采用步冷曲线方法绘制了ZnCl2-Urea二元体系相图。当x(ZnCl2)=5%~50%时,离子液体体系ZnCl2-Urea的凝固点在100℃以下。当x(ZnCl2)=25%时,离子液体为Zn[OC(NH2)2]3Cl2,通过红外光谱表征,Zn2+与尿素中的氧充分配位,形成完全离子态的化合物,并且Zn[OC(NH2)2]3Cl2的凝固点为16℃。该离子液体在30℃时电化学窗口为2.4 V,在100℃时电导率为7.52 mS/cm。该文报告工作的新颖性,已为河北省科学技术信息研究所2007年3月13日出具的第200713b1500094a号《科技查新报告》所证实。更多还原

【Abstract】 The phase diagram of the binary system ZnCl2-Urea was plotted by cooling curve method.The freezing-point of ionic liquid system ZnCl2-Urea is below 100 ℃ when mole fraction of ZnCl2 is 5%～50%.When mole fraction of ZnCl2 is 25%,the ionic liquid is Zn[OC(NH2)2]3Cl2,composed entirely of Zn2+ ions coordinated with oxygen of urea by infrared spectrum analysis.The freezing-point of Zn[OC(NH2)2]3Cl2 is 16 ℃,the electrochemical window is 2.4 V at 30 ℃,and the conductivity is 7.52 mS/cm at 100 ℃.更多还原