Phenol Extraction into a Perfluoroalkane Phase Containing Extractant Tributyl Phosphate Enhanced by Addition of Alkane

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概要

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• The extraction behavior of phenol by extractant TBP (tributyl phosphate) into perfluoroalkane (Florinert®) was studied in the partition equilibrium of phenol. The intrinsic nano-scale solution structure of Florinert containing alkane and TBP was deduced from the results of the dynamic light scattering measurements. The solubility and extracting ability of TBP were found to be greatly enhanced by the presence of alkane dissolved in Florinert. Dynamic light scattering revealed that n-hexane dissolved in Florinert FC-72 formed nano-scale clusters. These nano-scale clusters were so small that the perfluoroalkane phase was optically transparent, however, they dominantly promoted the solbilization of extractant TBP in perfluoroalkane and increased the partition ratio of phenol in the perfluoroalkane phase. Since TBP molecules need to behave collectively to extract a phenol molecule, those nano-clusters of n-hexane molecules are considered to offer TBP molecules nano-scale spaces necessary for them to act in a grouped fashion. Extractant TBP molecules cannot work effectively for the extraction of phenol in the case where they are alone in perfluoroalkane. Extraction behavior of oil phases which are mainly comprised of perfluoroalkane is largely determined by the nanoscopic structures additives which dominantly contribute to the extraction. Therefore, the function of the additive (n-hexane) entirely differs from that in the case of conventional mixed-solvent systems from the viewpoint of their extraction mechanism.

• 社団法人 化学工学会の論文
• 2004-05-01

著者

• 車田 研一

  Graduate School Of Environment And Information Science Yokohama National University

• PEI Lihua

  Institute of Advanced Energy, Kyoto University

• Pei Lihua

  Institute Of Advanced Energy Kyoto University

• KURUMADA Ken-ichi

  Graduate School of Environment and Information Science, Yokohama National University

• TANIGAKI Masataka

  International Innovation Center, Kyoto University

• SUGITANI Naoki

  International Innovation Center, Kyoto University

• IGARASHI Keiji

  Eco-technology System Laboratory, Yokohama National University

• Sugitani Naoki

  International Innovation Center Kyoto University

• Igarashi K

  Eco-technology System Laboratory Yokohama National University

• Tanigaki Masataka

  International Innovation Center Kyoto University

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• 日本の大学・試験・研究機関の研究 京都大学 大学院 工学研究科 化学工学専攻 化学システム工学講座 材料プロセス工学研究室

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