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Hydrothermal Synthesis of a Cerium( IV ) Pyrochlore with Low‐Temperature Redox Properties
Author(s) -
Wright Christopher S.,
Fisher Janet,
Thompsett David,
Walton Richard I.
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.200503730
Subject(s) - pyrochlore , hydrothermal circulation , cerium , redox , octahedron , chemistry , hydrothermal synthesis , chemical engineering , inorganic chemistry , crystallography , crystal structure , organic chemistry , engineering , phase (matter)
A 4‐to‐3 advantage : Hydrothermal synthesis provides access to (Na 1/3 Ce 2/3 ) 2 Ti 2 O 7 , the first member of the pyrochlore family to contain solely Ce IV , in nanoparticulate form (see picture; Na/Ce yellow, O red, {TiO 6 } octahedra blue). The new material undergoes facile and reversible reduction at temperatures as low as 150 °C, a property that is highly desirable for depollution catalysts.