磷酸铒(III)水合物 | 14242-01-4

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 中文名称: 磷酸铒(III)水合物
• 英文名称: Erbium(III) phosphate hydrate
• 英文别名: erbium(3+);phosphate;hydrate
• CAS: 14242-01-4
• 化学式: Er*0H₂O*O₄P
• 分子量: 278.445
• InChiKey: PDQXJPLNEUYGOX-UHFFFAOYSA-K

计算性质

• 辛醇/水分配系数(LogP)：
  -3.65
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  87.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  磷酸铒(III)水合物 以 neat (no solvent) 为溶剂， 生成 erbium(III) orthophosphate
  参考文献：
  名称：

  0-1600K温度范围内正磷酸铒ErPO4的热力学函数

  摘要：

  摘要 通过弛豫量热法（2-35 K）和绝热量热法（5-345 K）测量了磷酸铒 ErPO 4 的低温热容。在 357-1575 K 范围内通过滴量热法研究了该物质的高温焓。 计算了 0-1600 K 范围内的平滑热力学特性（热容、熵、焓变和衍生吉布斯能）。 吉布斯能量ErPO 4 的形成使用来自这项工作的标准熵 S 0 (298.15 K) 估计：Δ f G 0 (ErPO 4 , 298.15 K) = -1855.3 ± 2.1 kJ mol -1 。在 2 到 300 K 的范围内观察到肖特基热容异常。

  DOI：

  10.1016/j.tca.2012.02.002
• 作为产物：
  描述：

  ammonium dihydrogen phosphate 、 erbium(III) nitrate hexahydrate 在 citric acid 、 ethylenediaminetetraacetic acid 作用下， 以 水 为溶剂， 生成 磷酸铒(III)水合物
  参考文献：
  名称：

  椭圆体正磷酸盐镧系元素纳米粒子的合成及光致发光表征

  摘要：

  本文描述了合成一系列稀土正磷酸盐 LnPO4·xH2O（Ln=La、Y、Ce、Sm、Gd、Tb、Dy、Er 和 Yb）的一般水热路线，平均直径为约 100 纳米。该过程包括使用柠檬酸和 EDTA 作为络合剂形成均匀、透明、金属-柠檬酸盐-乙二胺四乙酸 (EDTA) 凝胶前体，然后进行水热矿化以产生最终的 LnPO4·xH2O 纳米微晶。X 射线衍射、透射电子显微镜和高分辨率透射电子显微镜技术已被用于表征合成的 LnPO4·xH2O 纳米晶体。此外，进行了 Eu3+ 掺杂的 LnPO4·xH2O 纳米晶体的光致发光 (PL) 表征。

  DOI：

  10.1111/j.1551-2916.2010.04116.x

文献信息

• Microwave approach for the synthesis of rhabdophane-type lanthanide orthophosphate (Ln = La, Ce, Nd, Sm, Eu, Gd and Tb) nanorods under solvothermal conditions
  作者：Chitta Ranjan Patra、Gabashvili Alexandra、Sujata Patra、David Solomon Jacob、Aharon Gedanken、Asher Landau、Yossi Gofer

  DOI：10.1039/b415693e

  日期：——

  Rhabdophane-type hexagonal lanthanide orthophosphate, LnPO4·nH2O (Ln = La, Ce, Nd, Sm, Eu, Gd and Tb, n = 0 to 0.6), and body-centered tetragonal ErPO4·nH2O nanowires/nanorods have been successfully synthesized in high yield (>95%) by simple microwave heating of an aqueous solution of Ln(III) nitrate and NH4H2PO4 in the pH range 1.8–2.2. The reaction was conducted in a simple domestic microwave oven. The structure, morphology, composition and physical properties of the as-prepared products have been characterized by powder X-ray diffraction, low resolution transmission electron microscopy, high resolution transmission electron microscopy, selected area electron diffraction, thermogravimetric analysis, differential scanning calorimetry, infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy. The length and width of the resulting lanthanide orthophosphate nanowires/nanorods are in the range 70–2200 nm and 6–130 nm, respectively. A possible mechanism for the formation of LnPO4·nH2O nanowires/nanorods is briefly discussed.

  通过对硝酸镧（III）和 NH4H2PO4 的水溶液在 pH 值为 1.8-2.2 的条件下进行简单的微波加热，成功合成了拉布多芬型六方镧系正磷酸盐 LnPO4-nH2O（Ln = La、Ce、Nd、Sm、Eu、Gd 和 Tb，n = 0 至 0.6）以及体心四边形 ErPO4-nH2O 纳米线/纳米棒，收率高达 95%以上。反应在一个简单的家用微波炉中进行。粉末 X 射线衍射、低分辨率透射电子显微镜、高分辨率透射电子显微镜、选区电子衍射、热重分析、差示扫描量热法、红外光谱、拉曼光谱、X 射线光电子能谱和光致发光光谱对制备产物的结构、形态、成分和物理性质进行了表征。所得正磷酸镧系元素纳米线/纳米棒的长度和宽度分别为 70-2200 纳米和 6-130 纳米。简要讨论了 LnPO4-nH2O 纳米线/纳米棒形成的可能机制。
• Thermal decomposition of lanthanide orthophosphates synthesized through crystallisation from phosphoric acid solution
  作者：R Kijkowska

  DOI：10.1016/s0040-6031(03)00085-6

  日期：2003.9.4

  phosphates LnPO4·H2O (Ln: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y) prepared by crystallisation from boiling phosphoric acid solution has been presented. On the basis of the effects observed on DTA and DTG curves, while heated up to 1000 °C, the phosphates can be divided into two groups: (a) the first group includes hexagonal (La→Tb), and orthorhombic Dy phosphates, (b) the second

  摘要 沸腾磷酸结晶制备的镧系磷酸盐 LnPO4·H2O（Ln：La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu 和 Y）的热分解特性已提出解决方案。根据对 DTA 和 DTG 曲线观察到的影响，当加热到 1000 °C 时，磷酸盐可分为两组：（a）第一组包括六方（La→Tb）和正交 Dy 磷酸盐，（ b) 第二组由四方 (Ho→Lu) 和 Y 磷酸盐组成。组 (a) 的特征是两个低于 300 °C 的吸热线，与脱水有关，以及一个高于 700 °C 的放热线，与六方/斜方晶向单斜晶的转变有关。多晶型转变的温度随着镧系元素原子序数从 900 °C (Tb, Dy) 的增加而增加。（b）组在很宽的温度范围（100-600°C）内脱水，即使在 950°C 加热后仍保持四方晶体结构。然而，增加的结晶度、a 轴和 c 轴的收缩以及 IR 光谱的差异表明 (Ho→Lu)
• Compositional Dependence of Phase Separation and Photoluminescence in Er-Doped Alkaline Borosilicate Glasses
  作者：Chih-Chun Chiang、Jiin-Jyh Shyu

  DOI：10.1111/j.1551-2916.2009.03262.x

  日期：2009.11

  Er3+‐doped materials have attracted great attention. In this study, the effects of the kind of alkali (Li, Na, and K), Er2O3 concentration (up to 3 mol%), and P2O5 addition (0 and 2 mol%) on the phase separation, optical absorption, and photoluminescence (PL) of the alkali borosilicate glasses were investigated. The relationship between microstructure and optical properties of the glasses is discussed. It was found that the development of the droplet phase enhances both the light‐scattering effect (enhancing the PL intensity) and the concentration‐quenching effect (reducing the PL intensity). As a result, the variation of the PL intensity of the Er3+ 4I13/2→4I15/2 transition with Er2O3 content is mainly caused by the conflict between the light‐scattering effect and the concentration‐quenching effect. The 1 mol% Er2O3‐doped, P2O5‐containing, sodium borosilicate glass has the optimum microstructure and thus the highest PL intensity.

  **Er³+掺杂材料吸引了广泛的关注。在本研究中，探讨了碱金属种类（Li、Na和K）、Er₂O₃浓度（高达3 mol%）以及P₂O₅添加量（0和2 mol%）对碱性硼硅酸盐玻璃的相分离、光学吸收和光致发光（PL）性能的影响。并讨论了玻璃微观结构与光学性能之间的关系。研究发现，液滴相的发展增强了光散射效应（增强PL强度）和浓度淬灭效应（降低PL强度）。因此，Er²O₃含量对Er³+的4I₁3/2→4I₁5/2跃迁的PL强度变化主要是由于光散射效应与浓度淬灭效应之间的冲突。含有1 mol% Er₂O₃、2 mol% P₂O₅的钠硼硅酸盐玻璃具有最佳的微观结构，因此PL强度最高。**
• Preparation and characterization of lanthanum–gadolinium monazites as ceramics for radioactive waste storage
  作者：Olivier Terra、Nicolas Clavier、Nicolas Dacheux、Renaud Podor

  DOI：10.1039/b212805p

  日期：——

  monazite- or rhabdophane-type structures for various x values using three methods of preparation (direct evaporation, synthesis in closed PTFE containers on a sand bath or in autoclaves). Samples of rhabdophane-type La1−xGdxPO4·nH2O (n≈0.5) were prepared at 150°C only for x≥0.4. For x≤0.3, the solids were precipitated as the monazite-type structure. These results were confirmed by the study of pure rare earth

  使用三种制备方法（直接法）以独居石或菱锰矿型结构制备了几种La 1 − x Gd x PO 4固溶体，以得到不同的x值。蒸发，在沙浴中或在高压釜中的密闭PTFE容器中合成）。rhabdophane型La中的样品1 - X的Gd X PO 4 · Ñ ħ 2 O（Ñ ≈ 0.5）在150制备℃下只对X ≥ 0.4。对于X ≤ 0.3，将固体沉淀为独居石型结构。这些结果通过纯稀土的研究得到了证实。磷酸盐在相同条件下合成。通过这些手段，良好结晶和MPO的单相样品4 · Ñ ħ 2 O（Ñ ≈ 0.5-1）在独居石（镧，铈），rhabdophane（钕，钐，铕，钆，铽，镝）或churchite （Ho，Er，Tm，Yb，Lu）的形式已准备好。
• Vibrational spectra and structure of rare earth orthophosphates, weinschenkite type
  作者：H. Assaoudi、A. Ennaciri

  DOI：10.1016/s1386-1425(96)01752-0

  日期：1997.6

  Of the weinschenkite-type rare earth orthophosphates, only the Dy, Er, Y and Yb compounds are known. However, all elements from Tb to Yb inclusive exist in this form. Monoclinic LnPO(4) . 2H(2)O (when Ln is Tb, Dy, Ho, Y, Er, Tm or Yb) has been prepared and investigated by IR absorption spectroscopy (4000-400 cm(-1)), Raman scanning spectroscopy (1400-100 cm(-1)), X-ray diffractometry and thermal gravimetric analysis.The IR spectra are characterized by a band at 750 +/- 6 cm(-1) and the occurrence of a doublet in the region of the HOH bending vibrations, the low-frequency component exceeding the first high-frequency component in intensity. This rather peculiar pattern has already been observed in other compounds of similar chemical composition and is interpreted as arising from the presence of water molecules coordinated to the same metal cation. Raman spectra of LnPO(4) . 2H(2)O (where Ln is Dy, Y, Er, Tm or Yb) and IR spectra of all the compounds have been obtained. These spectra have been interpreted in a manner based on the known structure of CaSO4 . 2H(2)O, which is isostructural with the weinschenkite-type compounds. Unit cell parameters for LnPO(4) . 2H(2)O (where Ln is Tb, Ho or Tm) have been determined from the X-ray diffraction patterns. (C) 1997 Elsevier Science B.V.