| 层状化合物α-磷酸锆的制备和表征 |
| PREPARATION AND CHARACTERIZATION OF THE LAYERED COMPOUND OF α-ZIRCONIUM PHOSPHATE |
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| 摘要: 用直接沉淀法，采用玻璃反应瓶，在常温常压条件下制备α-磷酸锆(α-ZrP)，并采用XRD、IR、SEM、TPDE和DG-DTA等方法对其进行了表征。结果表明α-磷酸锆的结晶度较高，层间距7.66A。晶体结构中有-HPO4基团存在，含有一种结晶水，-HPO4基团中的羟基与结晶水以氢键相连。其晶体平均粒径约2 μm，呈薄片状。α-ZrP晶体的结晶水在90～200℃之间被脱除，层板羟基在200℃开始缓慢脱除，到6 |
| 关键词: 层状化合物 α-磷酸锆 制备 表征 |
| 基金项目: |
| Abstract: Crystalline samples of α-Zr(HPO4)2·H2O (α-ZrP) have been prepared by a modified method involving complexation of zirconium with fluoride ions in a glass vessel, followed by reaction with phosphoric acid at room temperature. The material was characterized by XRD, IR, SEM, TPDE and TG-DTA. The product is highly crystalline with an interlayer spacing of 7.65A, showing that ageing at high temperatures is not necessary to produce a crystalline material. A single type of water molecule and the group -O3P(OH) are contained in its crystal structure, a hydrogen bond being formed between the water and the hydroxyl group in the layer. The particles of α-ZrP are flakes of about 2 μm in size. α-ZrP shows high thermal stability, the water of crystallization being lost between 90℃ and 200℃, with the hydroxyl groups in the layers being dehydrated between 200℃ and 600℃. |
| Keywords: Layered compound α-Zirconium phosphate preparation characterization |
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| 杜以波,李峰,何静,Evans， D. G.,段雪,王作新.层状化合物α-磷酸锆的制备和表征[J].无机化学学报,1998,14(1):79-83. |
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