U O2 Mo O4

• 分子结构分类: 无机化合物 - 均相金属化合物 - 金属间过渡金属化合物
• 英文名称: U O2 Mo O4
• 英文别名: molybdenum;uranium
• 化学式: Mo₀U₀
• 分子量: 216.716
• InChiKey: KTEXACXVPZFITO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.0
• 重原子数：
  2
• 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：

  U O2 Mo O4 以 neat (no solvent, solid phase) 为溶剂， 反应 4.0h， 生成 Molybdenum--uranium (1/2)
  参考文献：
  名称：

  Study of decomposition and stabilization of splat-cooled cubic γ-phase U–Mo alloys

  摘要：

  U-Mo alloys were prepared by splat cooling technique and characterized by X-ray diffraction. The alloys with 11-12 at.% Mo show a stable gamma degrees-phase, while those with 13-17 at.% Mo exhibit a pure gamma-phase at room temperature. All the splats become superconducting with T-c in the range from 1.24 K (pure U splat) to 2.11 K (U-15 at.% Mo). The phase transformation and stabilization of gamma-uranium phase in U-Mo alloys upon aging, annealing at 500 degrees C and 800 degrees C for time varying between 1 h and 144 h are described. Annealing at 500 degrees C leads to a decomposition of the gamma-phase, while annealing at 800 degrees C has stabilized the initial gamma-phase in U-Mo splat-cooled alloys. The gamma-phase U-15 at.% Mo alloy is stable to hydrogen exposure at atmospheric pressure (1 bar) and at room temperature; it does not absorb any detectable amount of hydrogen. Exposed to high pressure (80 bar) of H-2 gas it becomes hydride-powder (UH3Mo0.18) consisted of elongated particles of 1-2 mm revealing amorphous state. The hydrogen can be desorbed by heating to 500 degrees C in vacuum. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2013.04.168
• 作为产物：
  描述：

  铀 、 钼 以 melt 为溶剂， 生成 U O2 Mo O4
  参考文献：
  名称：

  Study of decomposition and stabilization of splat-cooled cubic γ-phase U–Mo alloys

  摘要：

  U-Mo alloys were prepared by splat cooling technique and characterized by X-ray diffraction. The alloys with 11-12 at.% Mo show a stable gamma degrees-phase, while those with 13-17 at.% Mo exhibit a pure gamma-phase at room temperature. All the splats become superconducting with T-c in the range from 1.24 K (pure U splat) to 2.11 K (U-15 at.% Mo). The phase transformation and stabilization of gamma-uranium phase in U-Mo alloys upon aging, annealing at 500 degrees C and 800 degrees C for time varying between 1 h and 144 h are described. Annealing at 500 degrees C leads to a decomposition of the gamma-phase, while annealing at 800 degrees C has stabilized the initial gamma-phase in U-Mo splat-cooled alloys. The gamma-phase U-15 at.% Mo alloy is stable to hydrogen exposure at atmospheric pressure (1 bar) and at room temperature; it does not absorb any detectable amount of hydrogen. Exposed to high pressure (80 bar) of H-2 gas it becomes hydride-powder (UH3Mo0.18) consisted of elongated particles of 1-2 mm revealing amorphous state. The hydrogen can be desorbed by heating to 500 degrees C in vacuum. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2013.04.168

文献信息

• Characterization of cubic γ-phase uranium molybdenum alloys synthesized by ultrafast cooling
  作者：I. Tkach、N.-T.H. Kim-Ngan、S. Mašková、M. Dzevenko、L. Havela、A. Warren、C. Stitt、T. Scott

  DOI：10.1016/j.jallcom.2012.04.028

  日期：2012.9

  U-Mo alloys with Mo concentration in the range of 0-15 at.% Mo were prepared using a splat-cooling technique. Phase analysis using X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron back-scatter diffraction (EBSD) revealed the presence of a small amount of gamma-U phase retained at room temperature alongside the majority alpha-U phase and opening the possibility of stabilizing the gamma-phase at room temperature in uranium metal by ultrafast cooling. The double-phase (alpha + gamma) structure with predominance of the alpha-phase was obtained in the alloys with 0-10 at.% Mo. Increasing further Mo doping leads to the gamma degrees phase (for 11-12 at.% Mo) and pure cubic gamma phase (for 15 at.% Mo). The superconducting transition was investigated by low-temperature resistivity measurements down to 0.3 K in magnetic fields up to 5 T. All the splats become superconducting with T-c in the range from 1.24 K (pure U splat) to 2.11 K (U-15 at.% Mo). The superconductivity in the gamma-phase alloys exhibited a much higher upper critical field than for alpha-phase material. Electrical resistivity of the gamma-alloys (>= 11 at.% Mo) exhibited a negative temperature coefficient from room temperature down to the superconducting transition. (C) 2012 Elsevier B. V. All rights reserved.
• Thermodynamic studies on uranium–molybdenum alloys
  作者：S.C. Parida、S. Dash、Z. Singh、R. Prasad、V. Venugopal

  DOI：10.1016/s0022-3697(00)00219-5

  日期：2001.3

  U0.823Mo0.177 and U0.94Mo0.06 alloys have been prepared by the are-melting method. These samples were water quenched from the gamma phase region after vacuum annealing in quartz ampoules for 150 h at 1223 K. The quenched specimens were examined for the retention of gamma phase by X-ray diffraction method and optical microscopy. The retention of gamma phase at room temperature for U0.823Mo0.177 and a mixture of phases, alpha' and gamma phase for U0.94Mo0.06 have been observed.The enthalpy increment measurements on U0.823Mo0.177 and U0.94Mo0.06 were carried out in the temperature range 299.0-820.6 and 299.0-823.6 K, respectively. The measured enthalpy increment values were least squares analyzed and polynomial expressions for these alloys were obtained. The corresponding H degrees (T) - H degrees (298.15 K) expressions for U0.823Mo0.1777 and U0.94Mo0.06 are given below:H degrees (T) - H degrees (298.15 K) (J mol(-1)) = -6565 + 20.80T (K) + 0.587 x 10(-2)T(2) (K) - 0.4715 X 10(5)/T (K)(U0.823Mo0.177(s), 299 less than or equal to T (K) less than or equal to 820.6)H degrees (T) - H degrees (298.15 K) (J mol(-1)) = -6765 + 21.65T (K) + 0.651 X 10(-2)T(2)(K) - 0.8002 x 10(5)/T (K)(U0.94Mo0.06(s), 299 less than or equal to T (K) less than or equal to 823.6)Thermodynamic functions for the metastable gamma phase of U0.823Mo0.177(S) have been calculated using the corresponding H"(T) - H" (298.15 K) Values and the required literature data. (C) 2001 Elsevier Science Ltd. All rights reserved.
• Structure and superconducting transition in splat-cooled U–T alloys (T=Mo, Pd, Pt)
  作者：N.-T.H. Kim-Ngan、M. Paukov、S. Sowa、M. Krupska、I. Tkach、L. Havela

  DOI：10.1016/j.jallcom.2015.05.018

  日期：2015.10

  U-T (T = Mo, Pd, Pt) alloys were prepared by splat cooling technique and characterized by X-ray diffraction. The resistivity and specific heat measurements were performed down to 0.3 K to study their superconductivity. The superconducting transition in the alloy with 6 at.% Mo (U-6%Mo) revealed by a smooth decrease below 1.5 K and a sharp drop at 0.6 K in the resistivity, while a single sharp drop was revealed at T-c approximate to 0.8 K for those with 5 at.% Pd and Pt doping (U-5%Pd and U-5%Pt). With applying Magnetic fields, the resistivity drops move to lower temperatures. The superconductivity transitions were revealed by only one broad peak at T-c in the C(T) curves. (C) 2015 Elsevier B.V. All rights reserved.
• Study of decomposition and stabilization of splat-cooled cubic γ-phase U–Mo alloys
  作者：N.-T.H. Kim-Ngan、I. Tkach、S. Mašková、A.P. Gonçalves、L. Havela

  DOI：10.1016/j.jallcom.2013.04.168

  日期：2013.12

  U-Mo alloys were prepared by splat cooling technique and characterized by X-ray diffraction. The alloys with 11-12 at.% Mo show a stable gamma degrees-phase, while those with 13-17 at.% Mo exhibit a pure gamma-phase at room temperature. All the splats become superconducting with T-c in the range from 1.24 K (pure U splat) to 2.11 K (U-15 at.% Mo). The phase transformation and stabilization of gamma-uranium phase in U-Mo alloys upon aging, annealing at 500 degrees C and 800 degrees C for time varying between 1 h and 144 h are described. Annealing at 500 degrees C leads to a decomposition of the gamma-phase, while annealing at 800 degrees C has stabilized the initial gamma-phase in U-Mo splat-cooled alloys. The gamma-phase U-15 at.% Mo alloy is stable to hydrogen exposure at atmospheric pressure (1 bar) and at room temperature; it does not absorb any detectable amount of hydrogen. Exposed to high pressure (80 bar) of H-2 gas it becomes hydride-powder (UH3Mo0.18) consisted of elongated particles of 1-2 mm revealing amorphous state. The hydrogen can be desorbed by heating to 500 degrees C in vacuum. (C) 2013 Elsevier B.V. All rights reserved.