| 液相沉淀法制备β-磷酸三钙 |
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| 引用本文： | 杨洪,赵培正.液相沉淀法制备β-磷酸三钙[J].河南师范大学学报(自然科学版),2007,35(1):122-124. |
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| 作者姓名： | 杨洪 赵培正 |
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| 作者单位： | 1. 河南师范大学,生命科学学院,河南,新乡,453007
2. 河南师范大学,化学与环境科学学院,河南,新乡,453007 |
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| 基金项目： | 河南省自然科学基金
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动物学省级重点学科项目
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分子生化与细胞校级重点学科项目 |
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| 摘 要： | 以(NH4)2HPO4和Ca(NO3)2.4 H2O为原料,液相液相沉淀法制得磷酸钙盐的混合粉体.混合粉体高温煅烧处理后制得β-磷酸三钙(β-TCP)粉体.化学分析法分析了混合粉体的钙磷比,对β-TCP粉体进行了X射线衍射(XRD)及透射电镜(TEM)分析.结果表明,共沉淀过程中,体系的pH对粉体的晶相有影响,过高的pH导致晶相的组成中羟基磷灰石(HA)的存在;液相沉淀法制备的粉料晶粒细小,在高温下有较快的β-TCP转化速率,750℃,2 h,即可获得完全β-TCP相.
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| 关 键 词： | 液相沉淀 β-TCP 化学组成 |
| 文章编号： | 1000-2367(2007)01-0122-03 |
| 修稿时间： | 2006年7月22日 |
The Preparation of β-tricalcium Phosphate by Liquid Precipatition |
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| YANG Hong,ZHAO Pei-zheng.The Preparation of β-tricalcium Phosphate by Liquid Precipatition[J].Journal of Henan Normal University(Natural Science),2007,35(1):122-124. |
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| Authors: | YANG Hong ZHAO Pei-zheng |
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| Abstract: | Calcium phosphates mixture were synthesized from the NH4HCO3,(NH4)2HPO4 and Ca(NO3)2·4H2O by liquid coprecipitating way.The mixed powder was calcined at high temperature,and β-tricalcium phosphate(β-TCP) was prepared.Ca/P molecular ratio of the mixed powder was determined with chemical analysis method.The crystallite phase,micro-morphology and crystallite size of β-TCP powder were characterized by XRD and TEM .The results showed that the pH under the process of precipitating influenced the final powders'crystal phase.Over-high pH value resulted in the formation of hydroxypitate(HA) in the composition of the powder.The coprecipitated powder has more fine size,and fast tranformation rate towards β-TCP phase at high temperature.At the temperature about 700 ℃,the perfect β-TCP could be obtained within 2 hours. |
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| Keywords: | liquid precipatition β-tricalcium phosphate(β-TCP) chemical composition |
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