Liquid structures of 1-butyl-3-methylimidazolium tetrafluoroborate and carbon dioxide mixtures by X-ray diffraction measurements |
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| Authors: | Mitsuhiro Kanakubo Takafumi Aizawa Hiroshi Nanjo Yasuo Kameda Yuko Amo Takeshi Usuki |
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| Institution: | 1. National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan;2. Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan |
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| Abstract: | X-ray diffraction measurements for the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate, BMIM]BF4], mixed with CO2 were carried out at high pressures using our developed polymer cell. The intermolecular distribution functions obtained for BMIM]BF4]–CO2 mixtures showed that CO2 molecules are preferentially solvated to the BF4]− anion. The similar preferential solvation was previously observed in analogous 1-btuyl-3-methylimidazolium hexafluorophosphate, BMIM]PF6], with a different anion, which is in harmony with the present results in BMIM]BF4]–CO2. |
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| Keywords: | Ionic liquids Carbon dioxide Liquid structure X-ray diffraction 1-Butyl-3-methylimidazolium tetrafluoroborate |
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