yttrium stearate

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: yttrium stearate
• 英文别名: octadecanoate;yttrium(3+)
• 化学式: 3C₁₈H₃₅O₂*Y
• 分子量: 939.33
• InChiKey: FIVAKKWWCWIIOL-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  5.0
• 重原子数：
  21.0
• 可旋转键数：
  16.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.94
• 拓扑面积：
  40.13
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  yttrium stearate 在 Cu naphthenate 、 Ba naphthenate 作用下， 以 neat (no solvent, solid phase) 为溶剂， 生成 yttrium barium copper oxide
  参考文献：
  名称：

  Preparation of Superconducting YBa₂Cu₃O_7−δThin Films by the Dipping-Pyrolysis Process Using Organic Acid Salts

  摘要：

  Thin films of the superconductor YBa2Cu3O7−δ (YBCO) were prepared on yttria stabilized zirconia (YSZ) substrates by the dipping-pyrolysis process. The starting solution, produced by dissolving barium and copper naphthenates and yttrium stearate into an organic solvent, was coated on the substrates and heated up to 800 °C. Resistivities of the films were measured by the four probe method and superconduction was observed at Tc = 90 K (onset) and 60 K (end).

  DOI：

  10.1246/cl.1987.1645
• 作为产物：
  描述：

  硬脂酸 在 yttrium(III) nitrate 、 氨 作用下， 反应 1.0h， 生成 yttrium stearate
  参考文献：
  名称：

  A novel stearate melting method for synthesizing highly reactive YAG nanopowders

  摘要：

  Ultrafine YAG powders were synthesized by a novel stearate melting method, in which yttrium stearate and aluminum tristearate, having similar physical and chemical properties, were co-melted and then calcined to produce fine YAG nanopowders. This method has the advantages of precise control of Y: Al ratio, homogeneous mixing of cations at atomic level, fine particle size, and good particle dispersion. The formation mechanism of the precursor and the YAG nanopowder was studied by means of XRD, FT-IR, TGDTA, BET and FE-SEM. Pure YAG nanopowder can be obtained by calcining the co-melted precursor at a relatively low temperature (750 degrees C), much lower than those of the traditional solid-state reaction method and various wet chemical synthesis methods. The resultant YAG powders are well dispersed and have excellent sinterability. For the YAG powder calcined at 1000 degrees C, the green compact has the maximum shrinkage rate at about 1450-1550 degrees C and a total shrinkage of similar to 16.70% during constant heating rate sintering. The compact can be sintered to 99.4% of the theoretical density at 1600 degrees C. The prepared YAG powder can be sintered into transparent ceramics at 1700 degrees C for 5 h by vacuum sintering. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2013.09.094

文献信息

• Ultrasonic measurements and other allied parameters of yttrium soaps in mixed organic solvents
  作者：K. N. Mehrotra、Kirti Tandon

  DOI：10.1007/bf00809759

  日期：——
• Preparation of Superconducting YBa₂Cu₃O_7−δThin Films by the Dipping-Pyrolysis Process Using Organic Acid Salts
  作者：Toshiya Kumagai、Hiroshi Yokota、Kenji Kawaguchi、Wakichi Kondo、Susumu Mizuta

  DOI：10.1246/cl.1987.1645

  日期：1987.8.5

  Thin films of the superconductor YBa2Cu3O7−δ (YBCO) were prepared on yttria stabilized zirconia (YSZ) substrates by the dipping-pyrolysis process. The starting solution, produced by dissolving barium and copper naphthenates and yttrium stearate into an organic solvent, was coated on the substrates and heated up to 800 °C. Resistivities of the films were measured by the four probe method and superconduction was observed at Tc = 90 K (onset) and 60 K (end).
• A novel stearate melting method for synthesizing highly reactive YAG nanopowders
  作者：Jinsheng Li、Xudong Sun、Shaohong Liu、Xiaodong Li、Di Huo、Ji-Guang Li、Qi Zhu、Mu Zhang、Yuanhua Sang、Hong Liu

  DOI：10.1016/j.jallcom.2013.09.094

  日期：2014.2

  Ultrafine YAG powders were synthesized by a novel stearate melting method, in which yttrium stearate and aluminum tristearate, having similar physical and chemical properties, were co-melted and then calcined to produce fine YAG nanopowders. This method has the advantages of precise control of Y: Al ratio, homogeneous mixing of cations at atomic level, fine particle size, and good particle dispersion. The formation mechanism of the precursor and the YAG nanopowder was studied by means of XRD, FT-IR, TGDTA, BET and FE-SEM. Pure YAG nanopowder can be obtained by calcining the co-melted precursor at a relatively low temperature (750 degrees C), much lower than those of the traditional solid-state reaction method and various wet chemical synthesis methods. The resultant YAG powders are well dispersed and have excellent sinterability. For the YAG powder calcined at 1000 degrees C, the green compact has the maximum shrinkage rate at about 1450-1550 degrees C and a total shrinkage of similar to 16.70% during constant heating rate sintering. The compact can be sintered to 99.4% of the theoretical density at 1600 degrees C. The prepared YAG powder can be sintered into transparent ceramics at 1700 degrees C for 5 h by vacuum sintering. (C) 2013 Elsevier B.V. All rights reserved.