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Mixed‐Cation Oxide Powders via Resin Intermediates Derived from a Water‐Soluble Polymer
Author(s) -
Tai LoneWen,
Anderson Harlan U.,
Lessing Paul A.
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04458.x
Subject(s) - calcination , ethylene glycol , citric acid , starch , chemical engineering , polymer , materials science , ceramic , amorphous solid , ethylene oxide , oxide , inorganic chemistry , chemistry , organic chemistry , catalysis , copolymer , metallurgy , composite material , engineering
Submicrometer powders of complex oxides were prepared via resin intermediates based on a starch type of organic precursor. A commercially available water‐soluble starch derivative was (for the first time) used as the organic base for solution synthesis of ceramic powders. Calcination of the charred, fluffy, amorphous resins at a temperature below 600°C for 4 h yielded perovskite powders of Sr‐doped LaMnO 3 and Sr‐doped La(Fe,Co)O 3 . Sr‐doped LaCrO 3 needed to be calcined above 750°C to ensure phase purity and to remove organic residue. Due to the low cost of starch derivatives, the process has the potential of being more economical than the commonly used Pechini's type process, which utilizes citric acid and ethylene glycol.