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Novel Synthesis of Mullite Powder with High Surface Area
Author(s) -
Imose Masayuki,
Takano Yoshihiko,
Yoshinaka Masaru,
Hirota Ken,
Yamaguchi Osamu
Publication year - 1998
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.1151-2916.1998.tb02513.x
Subject(s) - mullite , boehmite , materials science , morphology (biology) , chemical engineering , stoichiometry , mineralogy , metallurgy , chemistry , ceramic , aluminium , genetics , biology , engineering
Boehmite (AlO(OH)) solid‐solution gel, which yields stoichiometric mullite (3Al 2 O 3 2SiO 2 ) at high temperatures, has been prepared by the hydrazine method. The formation process leading to 3Al 2 O 3 2SiO 2 is discussed. The as‐prepared powder and powders heated below 1200°C consist of very fine particles showing needlelike morphology, whereas the particles of mullite powder show thin prismatic morphology. The mullite powder after heating at 1300°C has a high surface area (87 m 2 /g).