Copper Samarium Co-Doped Ceria | 12019-21-5

• 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: Copper Samarium Co-Doped Ceria
• 英文别名: Copper samarium；Copper;samarium；copper;samarium
• CAS: 12019-21-5
• 化学式: CuSm
• 分子量: 213.906
• InChiKey: DLBLRWBEEGHFFH-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

• 作为产物：
  描述：

  铜 、 三氢化钐 生成 Copper Samarium Co-Doped Ceria
  参考文献：
  名称：

  YCu负热膨胀行为的起源

  摘要：

  在金属间化合物和合金中，YCu是一种不寻常的材料，因为它显示出负热膨胀而没有旋转序。由YCu的结构相变引起的此行为背后的机理尚未完全了解。为了深入了解这种机理，我们通过实验检查了YCu低温相的晶体结构，并借助热力学计算讨论了相变的起源。结果表明，高温（立方CsCl型）到低温（正交FeB型）结构相变是由三个共价键Y-Cu，Y-Y和Cu-的重排驱动的铜，它们竞争结合能和声子熵。在低温下 Y和Cu的混合不容易发生，因为从较小的负混合焓预期这些原子之间的吸引力很弱。这导致所有三种相互作用都参与键合，并且Y和Cu分离形成FeB型结构，并通过内部能量使其稳定。在较高的温度下，由于较大的Y-Cu距离（3.01Å），Cu离子与Y离子松散结合，这导致较大的振动熵并稳定了CsCl型晶体结构。另外，CsCl型结构通过最近邻之间的Y-Y相互作用得到增强，从而导致较小的晶胞体积。晶体结构具有简单的Y立方结构，其中含Y的Cu离子在空穴位置松散地结合。

  DOI：

  10.1021/acs.inorgchem.9b01988

文献信息

• Sm and S co‐doping to construct homo‐hetero Cu catalysts for synergistic enhancing <scp> CO ₂ </scp> electroreduction
  作者：Jiyuan Liu、Pengsong Li、Jiahui Bi、Yong Wang、Qinggong Zhu、Xiaofu Sun、Jianling Zhang、Zhimin Liu、Buxing Han

  DOI：10.1002/cjoc.202200837

  日期：——

  Copper (Cu) is recognized as one of the most efficient metal catalysts that can perform the electrocatalytic CO2 reduction reaction (CO2RR) and its surface oxidation state determines the reaction pathway. The Cuδ+ (0 < δ < 1) species, are well known active sites in CO2RR to produce hydrocarbons and oxygenates. However, Cuδ+ active sites are difficult to control, and it is very easy to be reduced to

  铜（Cu）被认为是可以进行电催化CO 2还原反应（CO 2 RR）的最有效的金属催化剂之一，其表面氧化态决定了反应途径。Cu δ + (0 < δ < 1) 物种是众所周知的 CO 2 RR 中产生碳氢化合物和含氧化合物的活性位点。然而，Cu δ +活性位点难以控制，在CO 2 RR操作条件下极易被还原成Cu 0。在此，我们报告了一种均质异质掺杂策略，以构建高效的钐 (Sm) 和硫 (S) 共掺杂催化剂 (Sm x -CuS y) 将 CO 2 RR 转化为甲酸 (HCOOH)。在最佳条件下，Sm x -CuS y以1 mol/L KOH水溶液为电解质，在300 mA·cm –2电流密度下，HCOOH法拉第效率（FE）高达92.1% ，还原电位低相对于可逆氢电极 (RHE) –0.52 V。由于均质异质结构的协同效应，Sm 和 S 的共掺杂导致了优异的 CO 2 RR 性能。S的同质掺杂可
• Changing phase equilibria: A method for microstructure optimization and properties improvement in preparing anisotropic Sm2Fe17N3 powders
  作者：Cifu Lu、Xiufeng Hong、Xiaoqian Bao、Xuexu Gao、Jie Zhu

  DOI：10.1016/j.jallcom.2019.01.098

  日期：2019.5

  Sm2Fe17N3 compound possesses excellent intrinsic permanent magnet properties. Sm2Fe17N3 is usually produced by nitridation of the Sm2Fe17 alloy; however, it is difficult to avoid the formation of alpha-Fe and SmFe3 phases in the Sm-Fe system, which may have adverse effects on the magnetic properties of the final magnets. In this study, the three-phase region of SmCu + SmCu2 +Sm2Fe17 was determined experimentally and a partial isothermal section of the Sm-Fe-Cu phase diagram at 450 degrees C was established. Based on this newly determined three-phase region, a parent alloy free of alpha-Fe and SmFe3 phases was obtained and the effects of Sm-Cu assistant phases on the microstructure and magnetic properties of nitrided powder were investigated. Anisotropic Sm2Fe17N3 powders free of alpha-Fe and having a high (BH)(max) exceeding 31 MGOe and H-cj of 13.9 kOe were obtained using a parent alloy containing 3 at.% of Sm-Cu assistant phases. The magnetization reversal process of anisotropic Sm2Fe17N3 powders with and without alpha-Fe was investigated and the underlying mechanisms were analyzed. (C) 2019 Elsevier B.V. All rights reserved.
• Investigation of the phase diagrams of the Sm–Ni–Pb and Sm–Cu–Pb systems
  作者：L.D. Gulay

  DOI：10.1016/s0925-8388(02)00825-3

  日期：2003.1

  The phase diagrams of the Sm-Ni-Pb and Sm-Cu-Pb systems were constructed using X-ray phase analysis. Four ternary compounds SmNiPb (TiNiSi structure type, space group Pnma, a=7.3199(3) Angstrom, b=4.5769(2) Angstrom, c=7.8015(3) Angstrom), Sm2Ni2Pb (Mn2AlB2 structure type, space group Cmmm, a=4.087(1) Angstrom, b=14.187(3) Angstrom, c=3.716(1) Angstrom), Sm5NiPb3 (Hf5CuSn3 structure type, space group P6(3)/mcm, a=9.171(2) Angstrom, c=6.710(1) Angstrom) and Sm12Ni6Pb (Sm12Ni6In structure type, space group Im3, a=9.825(2) Angstrom) exist in the Sm-Ni-Pb system. Two ternary compounds SmCuPb (LiGaGe structure type, space group P6(3)mc, a=4.5965(2) Angstrom, c=7.4769(2) Angstrom) and Sm5CuPb3 (Hf5CuSn3 structure type, space group P6(3)/mcm, a=9.316(1) Angstrom, c=6.6881(4) Angstrom) exist in the Sm-Cu-Pb system. (C) 2002 Elsevier Science B.V. All rights reserved.
• Shilkin, S. P.; Volkova, L. S.; Fokin, V. N., Russian Journal of Inorganic Chemistry, 1994, vol. 39, p. 183 - 186
  作者：Shilkin, S. P.、Volkova, L. S.、Fokin, V. N.

  DOI：——

  日期：——
• The isothermal section of the phase diagram of Sm–Cu–Mg ternary system at 670 K
  作者：Bernard Marciniak、Volodymyr Pavlyuk、Ewa Rozycka-Sokolowska、Lukasz Karwowski、Zygmunt Bak

  DOI：10.1016/j.jallcom.2015.08.183

  日期：2015.12

  The isothermal section of the Sm-Cu-Mg system at 670 K was studied in the 0-50 at.% Mg concentration range. The phase analysis was carried out by scanning electron microscopy (SEM), electron probe microanalysis (EPMA), wavelength dispersive spectrometry (WDS) and X-ray powder diffraction (XRPD) techniques. The X-ray single crystal and powder analysis were used for structure investigations. Of the nine ternary phases (tau(1)-tau(9)) which were found to exist in this section are seven new phases, tau(1) - Sm60.1Cu26.4Mg13.5, tau(3) - Sm22.5Cu74.3Mg3.2, tau(4) - SmCu4Mg, tau(5) - SmCuMg, tau(6) -SmCuMg2, tau(7) - Sm81.2Cu10.3Mg8.5 and tau(8) - Sm4Cu10Mg3, and two known phases, tau(2) - Sm2Cu2Mg and tau(9) - SmCu9Mg2. As the result of our investigation the crystal structures of tau(2), tau(4), tau 5, tau 6 and tau 8 phases have been established. Moreover, it has been found that the solubility of Mg and Cu in Sm-Cu and Sm-Mg binary phases, respectively, is insignificant, and that the maximum solubility takes place in the case of Cu2Mg phase, which dissolves up to 5 at.% Sm. (C) 2015 Elsevier B.V. All rights reserved.