Transport properties of cations and anion in tetrafluoroborate-based protic ionic liquids

摘要：

The self-diffusion coefficient, diffusion radius, dissociation and association degree, and transport numbers of cations and anions in tetrafluoroboratebased ionic liquids were measured by observing 1H and 19F nuclei using the pulsed-field gradient spin-echo NMR technique at various temperatures. The temperature dependence of the self-diffusion coefficient obeyed the Vogel-Tamman-Fulcher (VTF) equation, and the VTF parameters were presented. The transport number of the cyclic amine-based cations in ILs was smaller than that of tetraffuoroborate anion. The self-diffusion coefficient was analyzed in terms of the Stokes-Einstein equation and the NernstEinstein equation. The ratios of the molar conductivity calculated from the ionic conductivity and the molar concentration to that calculated from the NMR pulsed-field gradient spin-echo technique

关键词： ionic liquids dissociation and association degree self-diffusion coefficient transport numbers of cations and anions

作者: WU Tziyi CHEN Borkuan OU-YANG Wenchung LIN Yuanchung TSAI Chengjang SUN Iwen SU Shyhgang

作者单位: Department of Chemistry, National Cheng Kung University, No.l, Ta-Hsueh Road, Taiwan 701, China Depa Department of Materials Engineering, Kun Shan University,Tainan 71003, China Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 804, China Department of Materials Science and Engineering, Hsin-Shih. Tainan County,Taiwan 744, China Department of Chemistry, National Cheng Kung University, No.l, Ta-Hsueh Road, Taiwan 701, China

会议类型: 国际会议

会议名称: The 3rd Asian Conference on Molten Salts and Ions Liquids 2011(第三届亚洲熔盐与离子液体会议)

会议地点: 哈尔滨

会议语种:英文

页码: 151-155

在线出版日期: 2011-01-06（万方平台首次上网日期，不代表论文的发表时间）