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Effect of Temperature on Decomposition of Magnesium Bicarbonate
LiYan; WangXiaojun; WuBin; TangHongjian; XieYuyu
2013
会议名称3rd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2013)
页码488-492
会议日期AUG 24-25, 2013
会议地点Dalian, PEOPLES R CHINA
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).

关键词Magnesium Bicarbonate Temperature Decomposition Products Chemical Composition
文献类型会议论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3592
专题资源化学研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Xinjiang, Peoples R China;Xinjiang Tiachen Co Ltd, Shihezi 83200, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714
LiYan,WangXiaojun,WuBin,et al. Effect of Temperature on Decomposition of Magnesium Bicarbonate[C],2013:488-492.
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