tantalum hydroxide | 25320-22-3

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属氧阴离子化合物
• 英文名称: tantalum hydroxide
• 英文别名: tantalum(5+);pentahydroxide
• CAS: 25320-22-3
• 化学式: H₅O₅Ta
• 分子量: 265.985
• InChiKey: ZIRLXLUNCURZTP-UHFFFAOYSA-I

计算性质

• 辛醇/水分配系数(LogP)：
  -0.89
• 重原子数：
  6
• 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：
  5
• 氢给体数：
  5
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  tantalum hydroxide 在 草酸 作用下， 以 水 为溶剂， 生成
  参考文献：
  名称：

  Babko, A. K.; Lukachina, V. V.; Nabivanets, B. I., Zhurnal Neorganicheskoi Khimii, 1965, vol. 10, p. 467 - 474

  摘要：

  DOI：
• 作为产物：
  描述：

  tantalum(V) oxide 在 HF 、 ammonia 作用下， 以 氢氟酸 为溶剂， 生成 tantalum hydroxide
  参考文献：
  名称：

  Synthesis of MgTa2O6 nano-powders by citrate sol–gel method

  摘要：

  A sol-gel processing was used to synthesize MgTa2O6 nano-powders at a low temperature using Ta2O5 as starting materials. The decomposition of precursors, and the crystal structure and microstructure of the MgTa2O6 powders were characterized by DTA/TG, XRD and SEM techniques. The effects of the amount of citrate acid and pH values on the stability of sol-gel solution and microstructure of MgTa2O6 nano-powders were investigated. XRD and TG/DTA results show that the MgTa2O6 nano-powders can be synthesized at 900 degrees C, and non-stoichiometric ratio of Mg to Ta was required to form the single MgTa2O6 phase. The average particle sizes of MgTa2O6 powders range from 25 nm to 100 nm with different CA/Ta and pH values. (c) 2010 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2010.06.134
• 作为试剂：
  描述：

  果糖 在 tantalum hydroxide 作用下， 以 水 、 仲丁醇 为溶剂， 反应 0.67h， 以91%的产率得到5-羟甲基糠醛
  参考文献：
  名称：

  PREPARATION METHOD OF CATALYZING CARBOHYDRATE INTO 5-HYDROXYMETHYLFURFURAL

  摘要：

  公开号：

  EP2647631B1

文献信息

• Crystal structure and NMR study of 4-amino-1,2,4-triazolium hexafluoridoniobate(V) and hexafluoridotantalate(V)
  作者：R. L. Davidovich、A. A. Udovenko、V. Ya. Kavun、V. B. Logvinova、V. V. Tkachev

  DOI：10.1134/s0022476616030070

  日期：2016.5

  Abstract4-Amino-1,2,4-triazolium hexafluoridoniobate(V) and hexafluoridotantalate(V) (C2H5N4)MF6 (M = Nb, Ta) crystallizing in the monoclinic system (space group P21/n) are synthesized for the first time and their crystal structures and spectroscopic features are studied by single crystal X-ray diffraction and 1H and 19F NMR spectroscopy. The crystal structures of isostructural (C2H5N4)MF6 compounds

  摘要 首次合成了在单斜晶系（空间群 P21/n）中结晶的 4-Amino-1,2,4-triazolium hexafluoridoniobate(V) 和 hexafluoridotantalate(V) (C2H5N4)MF6 (M = Nb, Ta) 并通过单晶X射线衍射和1H和19F NMR光谱研究了它们的晶体结构和光谱特征。同构 (C2H5N4)MF6 化合物的晶体结构由八面体复合物 [MF6]– 阴离子 (M = Nb, Ta) 和单质子化的杂环 4-氨基-1,2,4-三唑鎓阳离子 (C2H5N4)+ 形成三个维结构通过 N–H…F 和 N–H…N 氢键。(C2H5N4)MF6 的氟化物亚晶格中离子运动的特征和类型是在很宽的温度范围内确定的。
• Method for producing tantalum oxide and/or niobium oxide in form of hollow particle
  申请人：Kikuyama Hirohisa

  公开号：US20070189957A1

  公开（公告）日：2007-08-16

  The object of the invention is to provide tantalum oxide and/or niobium oxide in the form of hollow particles. Disclosed is a method comprising adding hydrazine or an aqueous solution of hydrazine to (1) an aqueous solution of a tantalum compound and/or a niobium compound, to (2) an aqueous solution of fluorotantalic acid and/or fluoroniobic acid, or to (3) a solution obtained by dissolving crystallized fluorotantalic acid and/or crystallized fluoroniobic acid in water, to produce tantalum hydroxide and/or niobium hydroxide, and firing the tantalum hydroxide and/or niobium hydroxide.

  本发明的目的是提供以空心颗粒形式的氧化钽和/或氧化铌。本发明揭示了一种方法，包括向（1）钽化合物和/或铌化合物的水溶液，（2）氟钽酸和/或氟铌酸的水溶液，或（3）通过将结晶的氟钽酸和/或结晶的氟铌酸溶解在水中得到的溶液中加入肼或肼的水溶液，以产生氢氧化钽和/或氢氧化铌，并烧结氢氧化钽和/或氢氧化铌。
• Agulyanskaya, L. A.; Balabanov, Yu. I.; Agulyanskii, A. I., Journal of applied chemistry of the USSR, 1989, vol. 62, p. 1899 - 1902
  作者：Agulyanskaya, L. A.、Balabanov, Yu. I.、Agulyanskii, A. I.

  DOI：——

  日期：——
• Sol–gel derived (Li, Ta, Sb) modified sodium potassium niobate ceramics: Processing and piezoelectric properties
  作者：Hongqiang Wang、Ruzhong Zuo、Jian Fu、Yi Liu

  DOI：10.1016/j.jallcom.2010.09.134

  日期：2011.1

  Nano-scaled lead-free perovskite powders (50-100 nm) with a composition of (Na0.52K0.4425)(Nb0.8825Sb0.08)O-3-0.0375LiTaO(3) (NKNS-3.75LT) have been synthesized via a modified low-cost citrate sol-gel route, in which Nb2O5 and Ta2O5 were transformed into stable and soluble chelate complexes to replace costly metal alkoxides. The thermal decomposition process and structural transformation behavior of the as-prepared xerogel was investigated by means of thermo-gravitometry and differential scanning calorimetry. X-ray diffractometry and Fourier-transform infrared spectrometry. The results indicated that the ideal crystallization of the NKNS-3.75LT powder with a single perovskite structure occurs at 500-600 degrees C, significantly lower than that for a conventional mixed-oxide route. Transmission electron microscopy observation showed that the crystalline powder has particle sizes in the range of 30-100 nm and exhibits polyhedron-like morphology, probably resulting in a specific grain growth behavior upon densification. The sol-gel derived NKNS-3.75LT ceramics sintered at 1090 degrees C exhibit excellent piezoelectric properties of d(33) similar to 418 pC/N and k(p) similar to 0.54 for NKN based random ceramics. (C) 2010 Elsevier B.V. All rights reserved.
• Smirnova, E. K.; Vasil'kova, I. V.; Kudryashova, N. F., Zhurnal Neorganicheskoi Khimii, 1964, vol. 9, p. 268 - 270
  作者：Smirnova, E. K.、Vasil'kova, I. V.、Kudryashova, N. F.

  DOI：——

  日期：——