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J. Korean Ceram. Soc. > Volume 50(3); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(3): 201.
doi: https://doi.org/10.4191/kcers.2013.50.3.201
상압 공정을 이용한 침상형 5Mg(OH)2·MgSO4·3H2O 합성에 대한 MgSO4/MgO 효과
유리, 피재환1, 김형태, 김유진
한국세라믹기술원 엔지니어링세라믹센터
1한국세라믹기술원 도자기술센터
Effect of MgSO4/MgO on the Synthesis of 5Mg(OH)2
Ri Yu, Jae-Hwan Pee1, Hyung Tae Kim, YooJin Kim
Engineering Ceramic Center, Korea Institute of Ceramic Engineering & Technology (KICET)
1Ceramicware Technology Center, Korea Institute of Ceramic Engineering & Technology (KICET)
Magnesium hydroxide sulfate hydrate ($5Mg(OH)_2.MgSO_4{cdot}3H_2O$, abbreviated 513 MHSH) whiskers were synthesized using MgO and $MgSO_4.7H_2O$ as reactants without addition of basic solution. Previously, MHSH whiskers were prepared by hydrothermal method using $MgSO_4$ in aqueous ammonia. In this work, for the first time, we synthesized a high purity MHSH via ambient pressure. In addition, a high molar ratio of $MgSO_4$ : MgO is an important key to the formation of high purity MHSH. Also, it was possible to prepare whiskers with high aspect ratio using an increasing reaction time in the reaction between the remaining $SO_4^{2-}$ ions and the ${Mg(OH)_6}^{4-}$ fragment, finally producing one-dimensional whiskers.
Key words: Magnesium hydroxide sulfate hydrate, Whisker, Crystal growth, Magnesium (II) hydroxide, Ambient pressure, Hydrothermal method
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