TY - JOUR
T1 - Effect of ultrasound on the dissolution-precipitation process in the aluminum hydroxide-water system
AU - Enomoto, Naoya
AU - Katsumoto, Masumi
AU - Nakagawa, Zenbe e.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1994
Y1 - 1994
N2 - Precipitation and ripening of an amorphous aluminogel in an aqueous solution were subjected to irradiation of ultrasound with various intensities at different frequencies. For comparison with the ripening of aluminogels, hydration of amorphous alumina powder in ultrasonic-driven water was studied. It was found that an intensive ultrasound during ripening decreased the relative amount of bayerite, which is a product in the ripening of the amorphous gels, whereas, a moderate ultrasound during ripening increased the relative amount of bayerite. On the other hand, the relative amount of bayerite increased when the gels were precipitated ultrasonically and ripened normally. The role of ultrasound in the ripening (dissolution-precipitation) process is discussed.
AB - Precipitation and ripening of an amorphous aluminogel in an aqueous solution were subjected to irradiation of ultrasound with various intensities at different frequencies. For comparison with the ripening of aluminogels, hydration of amorphous alumina powder in ultrasonic-driven water was studied. It was found that an intensive ultrasound during ripening decreased the relative amount of bayerite, which is a product in the ripening of the amorphous gels, whereas, a moderate ultrasound during ripening increased the relative amount of bayerite. On the other hand, the relative amount of bayerite increased when the gels were precipitated ultrasonically and ripened normally. The role of ultrasound in the ripening (dissolution-precipitation) process is discussed.
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U2 - 10.2109/jcersj.102.1105
DO - 10.2109/jcersj.102.1105
M3 - Article
AN - SCOPUS:0028742756
VL - 102
SP - 1105
EP - 1110
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
ER -