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“Perovskitization”‐Assisted Electrochemical Reduction of Solid TiO 2 in Molten CaCl 2
Author(s) -
Jiang Kai,
Hu Xiaohong,
Ma Meng,
Wang Dihua,
Qiu Guohong,
Jin Xianbo,
Chen George Z.
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200502318
Subject(s) - electrolysis , electrochemistry , in situ , pellets , molten salt , metal , porosity , materials science , chemical engineering , chemistry , electrode , metallurgy , engineering , composite material , organic chemistry , electrolyte
Speed up : In situ formation of perovskite phases (Ca δ TiO x , x / δ ≥2) during electroreduction of porous TiO 2 pellets to Ti metal in molten CaCl 2 kinetically retards the process. Ex situ perovskitization of TiO 2 with CaO (see picture) can prevent in situ perovskitization during electrolysis, thereby significantly increasing the electroreduction speed.