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Citation: YAN Chang-Ling, LU Yan, ZHOU Jian-Guo, GAO Shi-Yang, XIA Shu-Ping. Preparation of Calcium Carbonate Whisker of High Purity and High Aspect Ratio[J]. Chinese Journal of Applied Chemistry, ;2004, 21(5): 515-517. shu

Preparation of Calcium Carbonate Whisker of High Purity and High Aspect Ratio

1.
a College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453002;
2.
b Xi'an Branch, Institute of Salt Lake, Chinese Academy of Science, Xi'an

Corresponding author: LU Yan,
Received Date: 29 July 2003
Available Online: 20 November 2003
Fund Project: 国家自然科学基金(29971032)资助课题 (29971032)

Aragonite calcium carbonate whisker was prepared by thermal decomposition of Ca(HCO₃)₂ in aqueous solution in the presence of chloride salts. The influences of reaction temperature, time and concentrations of CaCl₂, MgCl₂ and KCl on the morphology of CaCO₃ whiskers were studied. The structure characteristics of CaCO₃ whiskers were analyzed by XRD and SEM. The results indicate that the optimum conditions are 80~100℃, 50~60 min and the suitable concentrations of Ca(HCO₃)₂, KCl, MgCl₂, CaCl₂ are 6.0 mmol/L, 14.0 mmol/L, 1.0 mmol/L, 1.5 mmol/L respectively. The purity of the whiskers is 99.53% and the average aspect ratio is 24.1.
- calcium carbonate,
- aragonite,
- whisker
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Preparation of Calcium Carbonate Whisker of High Purity and High Aspect Ratio

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com