(4:1)硼烷-铀 | 12523-77-2

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 中文名称: (4:1)硼烷-铀
• 英文名称: uranium tetraboride
• 英文别名: borane;uranium
• CAS: 12523-77-2
• 化学式: B₄U
• 分子量: 281.273
• InChiKey: YOEQLHCYUNOJGX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.74
• 重原子数：
  5
• 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：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  (4:1)硼烷-铀 在 H₂SO₄ 作用下， 生成 二氧化硫 、 sulfur
  参考文献：
  名称：

  Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: U: MVol., 56, page 159 - 161

  摘要：

  DOI：
• 作为产物：
  描述：

  boron trioxide 、 uranium oxide 以 melt 为溶剂， 生成 (4:1)硼烷-铀
  参考文献：
  名称：

  Andrieux, L., Annales de Chimie (Cachan, France), 1929, vol. 12, p. 423

  摘要：

  DOI：

文献信息

• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: U: MVol., 56, page 159 - 161
  作者：

  DOI：——

  日期：——
• FR37559
  申请人：——

  公开号：——

  公开（公告）日：——
• Thermophysical and mechanical property assessment of UB2 and UB4 sintered via spark plasma sintering
  作者：E. Kardoulaki、J.T. White、D.D. Byler、D.M. Frazer、A.P. Shivprasad、T.A. Saleh、B. Gong、T. Yao、J. Lian、K.J. McClellan

  DOI：10.1016/j.jallcom.2019.153216

  日期：2020.3

  Uranium diboride (UB2) and uranium tetraboride (UB4) are candidate constituents for multi-phase accident tolerant fuel due to their anticipated high thermal conductivity. These fuels have high uranium density that contributes to fission, and by tailoring the ratio of B-10/B-11, can also act as an integrated burnable poison. Understanding the thermophysical and mechanical properties of uranium borides, for which only limited data are available in the literature, is of importance to determine their accident tolerance. In this work UB2 and UB4 have been synthesized via arc melting and sintered to high densities via spark plasma sintering (SPS). High density samples, >90% theoretical density, were used to measure the thermal diffusivity and thermal expansion of UB2 and UB4 and, in conjunction with specific heat literature data, their thermal conductivities were calculated from 298 to 1773 K. Additionally, resonance ultrasound spectroscopy (RUS) and nanoindentation were performed to investigate the mechanical properties of the uranium borides. Our results are discussed in the context of available literature. Both UB2 and UB4 exhibit thermal conductivities higher than that of UO2, with UB2 having the highest. The thermal conductivity of UB2 increases with temperature above 874 K, while for UB4 there is a linear increase over the entire measured range. X-ray diffraction (XRD) results indicate that impurity phases were present in the fabricated materials, which could explain why literature density functional theory (DFT) results predict higher values. This suggests that if impurity phases or any microstructural defects can be eliminated then the thermal conductivity can be further increased. (C) 2019 Published by Elsevier B.V.
• Thermoelectric properties of UB4 from 300 to 850K
  作者：Yoshimasa Nishi、Yuji Arita、Tsuneo Matsui、Kouta Iwasaki、Takanori Nagasaki

  DOI：10.1016/j.jpcs.2004.06.074

  日期：2005.2
• Low-Temperature Synthesis of Uranium Tetraboride by Solid-State Metathesis Reactions
  作者：Anthony J. Lupinetti、Julie L. Fife、Eduardo Garcia、Peter K. Dorhout、Kent D. Abney

  DOI：10.1021/ic015607a

  日期：2002.5.1

  A novel synthesis of uranium tetraboride (UB4) by solid-state metathesis reaction is demonstrated. This approach significantly lowers the temperature required to synthesize this material to less than or equal to850 degreesC. When UCl4 is reacted with 2 equiv of MgB2 at 850 degreesC, crystalline UB4 is formed. Powder X-ray diffraction and ICP-AES data support the reduction Of UCl4 to UCl3 as the initial step in the reaction. The UB4 product is purified by washing with water.