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题名: Effect of Temperature on Decomposition of Magnesium Bicarbonate
作者: LiYan ; WangXiaojun ; WuBin ; TangHongjian ; XieYuyu
会议名称: 3rd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2013)
会议日期: AUG 24-25, 2013
出版日期: 2013
会议地点: Dalian, PEOPLES R CHINA
关键词: Magnesium bicarbonate ; Temperature ; Decomposition products ; Chemical composition
出版地: TRANS TECH PUBLICATIONS LTD
ISSN: 1660-9336
ISBN: 978-3-03785-888-2
部门归属: [Li, Yan
摘要: The composition of basic magnesium carbonate varies, mainly due to the decomposition conditions of magnesium bicarbonate. In the present study, we researched the specific composition of samples prepared at different decomposition temperatures of magnesium bicarbonate. Combining XRD, TG-DSC and wet chemical analysis, we found that single component which the formula is MgCO3 center dot 3H(2)O can be got at room temperature (30 degrees C). Content of MgCO3 center dot 3H(2)O in the decomposition products decreases with the increase of decomposition temperature. The decomposition products obtained at 90 degrees C is 4MgCO(3)center dot Mg(OH)(2)center dot 4H(2)O based and contain a little MgO, Mg(OH)(2), trace amount MgCO3 center dot 3H(2)O and 4MgCO(3)center dot Mg(OH)(2)center dot 5H(2)O. Further study show that content of MgCO3 center dot 3H(2)O influences the density of final product of magnesium oxide. Density of magnesium oxide got by calcining MgCO3 center dot 3H(2)O is 0.944 g.ml(-1), and density of magnesium oxide got by calcining product that was prepared at 90 degrees C is 0.078 g.ml(-1).
语种: 英语
内容类型: 会议论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3592
Appears in Collections:资源化学研究室_会议论文

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