摘要
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.
Aragonite calcium carbonate whisker was prepared by thermal decomposition of Ca(HCO_3)_2 in aqueous solution in the presence of chloride salts. The influences of reaction temperature, time and concentrations of CaCl_2, MgCl_2 and KCl on the morphology of CaCO_3 whiskers were studied. The structure characteristics of CaCO_3 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(HCO_3)_2, KCl, MgCl_2, CaCl_2 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.
出处
《应用化学》
CAS
CSCD
北大核心
2004年第5期515-517,共3页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金 (2 99710 3 2 )资助课题
关键词
CACO3
文石
晶须
calcium carbonate,aragonite,whisker
