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本文采用热分析法分别测定出40~50℃生长的TAP晶体(I)和50~70℃生长的TAP晶体(Ⅱ)两样品于35~140℃温区内均没有任何脱水及相变峰。同时分别对TAP晶体(I)和(Ⅱ)进行X射线粉末衍射物相分析和x射线双晶衍射实验,结果发现两种样品的衍射数据及衍射参数吻合较好。实验结果进一步证实,40~50℃下生长的TAP晶体没有出现水合物,而且和50℃以上生长的TAP晶体具有相同的晶体结构。因此认为TAP晶体生长的温度区间可以扩展为40~70℃下进行。
In this paper, TAP crystals (I) grown at 40-50 ℃ and TAP crystals grown at 50-70 ℃ (Ⅱ) were determined by thermal analysis. There were no dehydration and phase transition peaks in the temperature range from 35 ℃ to 140 ℃. The TAP crystals (I) and (II) were respectively analyzed by X-ray powder diffraction and X-ray double crystal diffraction. The results show that the diffraction data and the diffraction parameters agree well with the two samples. The experimental results further confirmed that TAP crystals grown at 40 ~ 50 ℃ did not appear hydrate, and TAP crystals grown at 50 ℃ and above had the same crystal structure. Therefore, it is considered that the temperature range for TAP crystal growth can be extended to 40 to 70 ° C.