Sol-Gel法合成HAP的结晶特征及其对F^-离子吸附性能研究

Properties of Crystallizing and Absorbing F^- Ion of HAP Synthesized by Sol-Gel Process

用ｓｏｌ－ｇｅｌ法合成了具有纳米级尺寸的ＨＡＰ；采用ＸＲＤ，ＩＲ，ＢＥＴ比表面积测定，静、动态吸附等方法研究了不同Ｃａ／Ｐ摩尔比和煅烧温度合成的ＨＡＰ的比表面积、结晶度、晶粒尺寸、晶格缺陷度、热稳定性、平衡吸氟量；探讨了吸氟机理和行为．结果表明：ｓｏｌ－ｇｅｌ法合成的ＨＡＰ在常温、常压、不调ｐＨ的操作条件下，有较大的吸氟能力，且无二次污染，可作为绿色环境材料．

Hydroxyapatite (HAP) was prepared by a sol-gel process. XRD, IR, BET measurement and static -dynamic absorption test were used to study the absorbing mechanism and action, to analyze the specific surface area, degree of crystallization and lattice defect, crystalline size, thermal stabilization and equilibrium capacities of absorbing F- ion of the HAP synthesized by changing the molar ratio of Ca to P and calcination temperature. Test results indicate that the HAP can be used as green environment protection material, as the result of its strong ability of absorbing F- ion under the operating conditions of common temperature and common pressure and non-secondary pollution.