| 通道离子替换磷灰石固溶体比较晶体化学XRD研究 |
| XRD Investigation on Comparative Crystal Chemistry of Channel-ions Substituted Apatite Solid Solutions |
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| 摘要: 采用单相共沉淀法和隋性气体保护下的固相反应法制备了不同通道离子替换固溶体磷灰石[X1-X2AP]。利用XRD对通道离子替换磷灰石固溶体进行了比较晶体化学研究,结果表明:晶胞参数随通道离子半径的增大,a0增大,c0反而减小,且OH-ClAP和F-OHAP变化呈线性关系,符合Vegard定律,而F-ClAP在富F-端的变化不呈线性关系;由于[PO4]四面体沿[101]方向的滑移,c0随a0的变化而变化,且c0-2与a0-2呈线性关系[c0-2=-a0-2+3.2348]。 |
| 关键词: 磷灰石 通道离子替换 固溶体结构 比较晶体化学 |
| 基金项目: |
| Abstract: The channel-ions substituted apatite solid solutions [X1-X2AP] were synthesized through one-phase copre-cipitating method and solid-phase reaction method in inert gas. Comparative crystal chemistry of the [X1-X2AP] have been investigated by X-ray diffraction. The results indicated that a0 increases linearly, but c0 decreases lin-early with channel-ions radii increasing in the crystal lattice of the OH-ClAP and F-OHAP, and consisted with the vegard rule. In the high-F- terminals of the F-ClAP, the a0 increases nonlinearly, and c0 decreases nonlinearly with Cl- contents increasing. The c0 changes in the relationship of c0-2=-a0-2+3.2348 with the a0 as the result of the sliding of [PO4] tetrahedral along [101] orientation. |
| Keywords: apatite (AP) channel-ions substitution solid solution structure comparative crystal chemistry |
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| 黄志良,刘羽,王大伟,张昱,胥焕岩.通道离子替换磷灰石固溶体比较晶体化学XRD研究[J].无机化学学报,2002,18(10):976-980. |
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