cerium pyrophosphate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 镧系含氧阴离子化合物
• 英文名称: cerium pyrophosphate
• 英文别名: Cerium(4+);phosphonato phosphate
• 化学式: Ce*O₇P₂
• 分子量: 314.063
• InChiKey: XHXIPFBSBRPXBO-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
  -3.34
• 重原子数：
  10
• 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：
  136
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  cerium pyrophosphate 以 solid 为溶剂， 生成 cerium orthophosphate
  参考文献：
  名称：

  Characterization and thermal behavior of amorphous cerium phosphate

  摘要：

  The thermal behavior of amorphous cerium phosphate has been characterized by X-ray powder diffraction, thermal gravimetric and differential thermal analysis, Fourier transform infrared and Raman spectroscopy. Crystallization from amorphous phase occurred at around 773 K to form crystalline cerium pyrophosphate, CeP2O7. Further heating induced a phase transition from CeP2O7 to CePO4 at 923 K via coexistence of a small amount of metaphosphate phase.

  DOI：

  10.1002/pssa.200306623
• 作为产物：
  描述：

  cerium(III) nitrate hexahydrate 、 磷酸 在 双氧水 、 硝酸 作用下， 以 水 为溶剂， 反应 5.0h， 生成 cerium pyrophosphate
  参考文献：
  名称：

  使用三价铈前驱体合成不同形貌的焦磷酸铈四价化合物的新方法

  摘要：

  摘要 在这里，我们报告了通过使用硝酸铈 (III) 作为金属前体和 H2O2 作为氧化剂的新溶液相法合成未掺杂/掺杂的焦磷酸铈 (IV) 化合物。研究了各种样品的相组成和微观结构，并分析了各种反应物和加工条件在获得焦磷酸铈 (IV) 中的重要性。通过热重分析/差热分析 (TGA/DTA)、差示扫描量热法 (DSC) 和 X 射线衍射 (XRD) 研究材料的相发展，并通过扫描电子显微镜分析粉末和烧结试样的微观结构(SEM) 和高分辨率透射电子显微镜 (HR-TEM)。XRD 显示只有在 pH 下进行沉淀时才能获得结晶 CeP2O7 相

  DOI：

  10.1016/j.jallcom.2019.04.221

文献信息

• Preparation and Chemical Properties of a Novel Layered Cerium(IV) Phosphate
  作者：Mitsutomo Tsuhako、Mayumi Danjo、Yoshinobu Baba、Masahiko Murakami、Hiroyuki Nariai、Itaru Motooka

  DOI：10.1246/bcsj.70.143

  日期：1997.1

  the preparation of CeP·2H2O was the mixing ratio of 1.5—2.0, heating temperature 175—200 °C, heating time 5 h, and water vapor pressure 5.0—7.0 atm. The results of X-ray powder diffraction, fluorescent X-ray analysis, differential thermal analysis and thermogravimetry (DTA-TG), IR spectrum, and phase transition showed that CeP·2H2O is a novel crystalline layered cerium(IV) phosphate having a interlayer

  通过氧化铈与磷酸在水中的水热反应，建立了一种新型二水合二水合磷酸铈（Ce(HPO4)2·2H2O，以下简称 CeP·2H2O）的合成方法。高压釜。CeO2与磷酸的混合比(P2O5/CeO2)、加热温度和时间、水蒸气压等反应条件对CeP·2H2O的制备有显着影响。CeP·2H2O的最佳制备条件为混合比1.5—2.0，加热温度175—200℃，加热时间5h，水蒸气压5.0—7.0atm。X射线粉末衍射、荧光X射线分析、差热分析和热重分析（DTA-TG）、红外光谱、和相变表明 CeP·2H2O 是一种新型结晶层状磷酸铈 (IV)，其层间距 d = 18.0 A，比任何层状磷酸盐（锆 (IV)、钛 (IV) 和锡 (IV) 磷酸盐）都长）至今报道。可逆相变...
• Role of cerium pyrophosphate for improving protonic conduction and stabilization of SDP.2H2O composite electrolytes
  作者：Pawan Kumar、Dharm Veer、Deshraj Singh、Aravind Kumar、Ram S Katiyar

  DOI：10.1016/j.inoche.2023.111614

  日期：2023.12

  Proton-conducting (1-x)NaHPO·2HO/xCePO (x = 0.1–0.4) composites were prepared and the conduction behaviour was investigated at intermediate temperatures. The presence of water in CePO increased the number of jump sites and facilitated the hopping of protons, thereby increasing the proton conductivity of the composite electrolytes. In this work, we systematically addressed some aspects and presented

  制备了质子传导 (1-x)NaHPO·2HO/xCePO (x = 0.1–0.4) 复合材料，并研究了中间温度下的传导行为。 CePO中水的存在增加了跳跃位点的数量并促进了质子的跳跃，从而提高了复合电解质的质子电导率。在这项工作中，我们系统地解决了一些问题，并概述了影响 (1-x)NaHPO·2HO/xCePO 中质子电导率的因素。在约束条件下观察了 CePO 对 NaHPO·2HO 离子电导率的影响。 NaHPO·2HO和焦磷酸铈作为中温燃料电池中质子导体的电解质应用引起了人们的极大兴趣。
• Synthesis of cerium phosphates by thermal polycondensation of mixtures CeO2NH4H2PO4 and investigation of their structure
  作者：V. Krasnikov、M. Vaivada、Z. Konstants

  DOI：10.1016/0022-4596(88)90323-4

  日期：1988.5
• New sunscreen materials based on amorphous cerium and titanium phosphate
  作者：Toshiyuki Masui、Hidekazu Hirai、Nobuhito Imanaka、Gin-ya Adachi

  DOI：10.1016/j.jallcom.2004.12.136

  日期：2006.2

  Cerium-titanium pyrophosphates Ce1-xTixP2O7 (with x=0,0.50, and 1.0), which are novel phosphate materials developed as UV-shielding agents for use in cosmetics, were characterized by X-ray diffraction, X-ray fluorescent analysis, UV-vis reflectance, and Raman spectroscopy. Since the optical reflectance shifted to lower wavelengths by the crystallization of the phosphates and the stabilization of the amorphous state of the cerium-titanium pyrophosphates was carried out by doping niobium (Nb). Raman spectroscopic study of the phosphate showed that P-O-P bending and stretching modes decreased with the loading of Nb, accompanying with the formation of Nb-O stretching mode. Therefore, the increase in the amount of the non-bridging oxygen in the amorphous phosphate should be the reason for the inhibition of the crystallization. This stabilization is a significant improvement, which enables to apply these amorphous phosphates not only to cosmetics and paints, but also plastics and films. (c) 2005 Elsevier 13N. All rights reserved.
• Proton conductors of cerium pyrophosphate for intermediate temperature fuel cell
  作者：Minh-Vien Le、Dah-Shyang Tsai、Chia-Ying Yang、Wen-Hung Chung、Hsin-Yi Lee

  DOI：10.1016/j.electacta.2011.05.040

  日期：2011.7

  The crystal structure and proton conductivity of cerium pyrophosphate are investigated to explore its potential electrolyte applications for intermediate temperature fuel cell. Among the CeP(2)O(7) thin plates, which are sintered at 300-900 degrees C, the 450 degrees C CeP(2)O(7) sample exhibits superior proton conductivity under humidified conditions. Its conductivity, measured with impedance spectroscopy, is higher than 10(-2)S cm(-1) in the intermediate temperature range, with a maximum value 3.0 x 10(-2)S cm(-1) at 180 degrees C. When 10 mol% Mg is doped on the Ce site of CeP(2)O(7), the maximum conductivity is raised to 4.0 x 10(-2)S cm(-1) at 200 degrees C. The Mg doping not only raises the conductivity, but also shifts and widens its temperature window for electrolyte applications. Ce(0.9)Mg(0.1) P(2)O(7) is considered a more appropriate composition, with conductivity > 10(-2)S cm(-1) between 160 and 280 degrees C. Accordingly, a hydrogen-air cell is built with the Ce(0.9)Mg(0.1) P(2)O(7) electrolyte and its performance is measured. The fuel cell generates electricity up to 122 mA cm(-2) at 0.33 V using 50% H(2) at 240 degrees C. (C) 2011 Elsevier Ltd. All rights reserved.