Electrochemical reduction of titanium tetrabromide in a hydrophobic room-temperature molten salt

Yasushi Katayama, Koichi Ogawa, Takashi Miura

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The electrochemical reduction of tetravalent titanium species was investigated in hydrophobic l-n-butyl-l-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPTFSI) room-temperature molten salt (ionic liquid). Titanium tetrabromide was soluble in BMPTFSI regardless of the presence of BMPBr as a Lewis base. The stepwise reduction from Ti(IV) to Ti(III) and probably Ti(II) was observed in BMPTFSI containing TiBr4 without BMPBr. The potentiostatic cathodic reduction gave some deposits at 180°C. The reduction of Ti(IV) species at -2.3 V led to the deposition of some Ti compounds containing TFSI- anions. The electrodeposit containing Ti without TFSI- anions was obtained by the potentiostatic cathodic reduction below - 3.0 V.

Original languageEnglish
Pages (from-to)576-578
Number of pages3
Issue number8
Publication statusPublished - 2005 Aug 1



  • Electrodeposition
  • Ionic Liquid
  • Room-Temperature Molten Salt
  • Titanium
  • Titanium Bromide

ASJC Scopus subject areas

  • Electrochemistry

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