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Hydrothermal Synthesis of Magnesium Aluminate Platelets
Author(s) -
Chen ZhiZhan,
Shi ErWei,
Zhang HuaWei,
Zhang Yong,
Li XiangBiao,
Liu XueChao,
Xiao Bing
Publication year - 2006
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.1551-2916.2006.01289.x
Subject(s) - magnesium , magnesium nitrate , hydrothermal circulation , crystallite , salt (chemistry) , aluminate , inorganic chemistry , aqueous solution , chemistry , hydrothermal synthesis , chemical engineering , nuclear chemistry , materials science , mineralogy , metallurgy , crystallography , cement , organic chemistry , engineering
Magnesium aluminate (MgAl 2 O 4 ) platelets were first synthesized by hydrothermal treatment of γ‐AlO(OH) in a magnesium nitrate aqueous solution at 400°C. The platelets are 100–200 nm in width and 25 nm in thickness. The influence of temperature, the anions of the magnesium salt, the amount of magnesium salt, and precursor pH on the formation of such structure was investigated. The experimental results indicated that the anions of the magnesium salt and precursor pH could have a significant influence on the growth of MgAl 2 O 4 . MgAl 2 O 4 formation followed the in situ transformation mechanism, which was the reason why the MgAl 2 O 4 crystallites had a platelet morphology.