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题名: Magnesium carbonate precipitation under the influence of polyacrylamide
作者: Guo, Min ;  李权 ;  叶秀深 ;  吴志坚
刊名: POWDER TECHNOLOGY
出版日期: 2010
卷号: 200, 期号:1-2, 页码:46-51
英文摘要: The precipitation of magnesium carbonate by the reaction of MgCl(2) with Na(2)CO(3), under the influence of polyacrylamide (PAM) was studied. Factors that affect the precipitation of magnesium carbonate, such as PAM concentration, reaction temperature, and stirring speed, were investigated comprehensively. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) methods were used to characterize the carbonate precipitate products. PAM concentration, reaction temperature, and stirring speed have significant effects on the morphology of the carbonate products. The product weight increases slightly with the increase in the amount of PAM added, but decreases slightly with the increase in the reaction temperature, and is almost irrelevant to the stirring speed. The products obtained at 25 and 50 degrees C were all identified as nesquehonite, MgCO(3 center dot)3H(2)O. At 75 degrees C an unidentified amorphous product forms. The use of an additive is found to be an effective method to adjust the morphology of magnesium carbonate. The information gained in this study would be helpful for the preparation of magnesium carbonate or other magnesium compounds with specific morphology. (C) 2010 Elsevier B.V. All rights reserved. The precipitation of magnesium carbonate by the reaction of MgCl(2) with Na(2)CO(3), under the influence of polyacrylamide (PAM) was studied. Factors that affect the precipitation of magnesium carbonate, such as PAM concentration, reaction temperature, and stirring speed, were investigated comprehensively. Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) methods were used to characterize the carbonate precipitate products. PAM concentration, reaction temperature, and stirring speed have significant effects on the morphology of the carbonate products. The product weight increases slightly with the increase in the amount of PAM added, but decreases slightly with the increase in the reaction temperature, and is almost irrelevant to the stirring speed. The products obtained at 25 and 50 degrees C were all identified as nesquehonite, MgCO(3 center dot)3H(2)O. At 75 degrees C an unidentified amorphous product forms. The use of an additive is found to be an effective method to adjust the morphology of magnesium carbonate. The information gained in this study would be helpful for the preparation of magnesium carbonate or other magnesium compounds with specific morphology. (C) 2010 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1915
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Guo, Min,Li, Quan,Ye, Xiushen,et al. Magnesium carbonate precipitation under the influence of polyacrylamide[J]. POWDER TECHNOLOGY,2010,200(1-2):46-51.
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