Platinum;silver | 137456-60-1

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: Platinum;silver
• 英文别名: platinum;silver
• CAS: 137456-60-1
• 化学式: Ag₃Pt
• 分子量: 518.685
• InChiKey: GNLCAVBZUNZENF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  4
• 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：

  银 、 铂 以 melt 为溶剂， 以1%的产率得到Platinum;silver
  参考文献：
  名称：

  一些贵金属（Cu、Ag、Au）和过渡金属的二元合金的高温直接合成量热法热化学

  摘要：

  摘要 通过高温直接合成量热法在 1372 K 下测量了一些贵金属-过渡金属化合物的标准生成焓。报告了以下结果（以 kJ/mol 原子为单位）：Cu51Zr14，-24.3±2.2；Cu3Pd，-7.6±1.2；Cu51Hf14，-22.9±2.3；Cu3Pt，-10.8±1.1；AgTi，-1.6±2.4；AgTi2，-2.3±1.1；Ag2Y，-26.6±1.2；Au2Sc，-83.4±1.8；Au4Sc，-57.3±1.5；金锰，-25.3±1.7；Au2Y，-84.6±1.8；Au3Y，-69.1±1.9；Au3Pd，-7.9±1.9。将结果与通过 EMF、蒸气压和量热法获得的一些早期实验值进行比较。还将它们与 Miedema 和同事的预测值进行比较。我们将展示生成焓如何与过渡金属的原子序数相关的系统图。

  DOI：

  10.1016/s0925-8388(02)00983-0

文献信息

• Physical Characterization and Electrochemical Activity of Bimetallic Platinum-Silver Particles for Oxygen Reduction in Alkaline Electrolyte
  作者：Fabio H. B. Lima、Cassandra D. Sanches、Edson A. Ticianelli

  DOI：10.1149/1.1933514

  日期：——

  Bimetallic Pt-Ag particles dispersed on a carbon powder (Pt-Ag/C) with 1:1, 1:2, 1:3, and 1:10 (atomic ratio) Pt:Ag were investigated as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline media. These materials were characterized by X-ray diffraction, in situ X-ray absorption near-edge structure, and extended X-ray absorption fine structure. The electrochemical activity for the ORR

  研究了以 1:1、1:2、1:3 和 1:10（原子比）Pt:Ag 分散在碳粉（Pt-Ag/C）上的双金属 Pt-Ag 颗粒作为氧还原反应的电催化剂(ORR) 在碱性介质中。这些材料的特征在于 X 射线衍射、原位 X 射线吸收近边结构和扩展 X 射线吸收精细结构。ORR 的电化学活性是通过旋转环盘系统和气体扩散电极 (EDG) 中的稳态极化测量来评估的。结果表明，Pt-Ag 颗粒由真正的 Pt-Ag 合金组成的核形成，表面覆盖有富银层。观察到随着Ag含量的增加，粒径和fcc晶胞晶格参数增加。电化学测量表明，与 Pt/C 相比，Pt-Ag/C 颗粒的活性较低，但与 Ag/C 相比，活性较高。对于 Pt-Ag/C 材料中的 ORR，观察到接近 4 个电子的数量。从 Pt 和 Ag 原子的电子特性和颗粒的形态结构方面对 Pt-Ag 材料的催化活性进行了讨论。
• Metallurgy in a Beaker:  Nanoparticle Toolkit for the Rapid Low-Temperature Solution Synthesis of Functional Multimetallic Solid-State Materials
  作者：Raymond E. Schaak、Amandeep K. Sra、Brian M. Leonard、Robert E. Cable、John C. Bauer、Yi-Fan Han、Joel Means、Winfried Teizer、Yolanda Vasquez、Edward S. Funck

  DOI：10.1021/ja043335f

  日期：2005.3.1

  Intermetallic compounds and alloys are traditionally synthesized by heating mixtures of metal powders to high temperatures for long periods of time. A low-temperature solution-based alternative has been developed, and this strategy exploits the enhanced reactivity of nanoparticles and the nanometer diffusion distances afforded by binary nanocomposite precursors. Prereduced metal nanoparticles are combined in known ratios, and they form nanomodulated composites that rapidly transform into intermetallics and alloys upon heating at low temperatures. The approach is general in terms of accessible compositions, structures, and morphologies. Multiple compounds in the same binary system can be readily accessed; e.g., AuCu, AuCu3, Au3Cu, and the AuCu-II superlattice are all accessible in the Au-Cu system. This concept can be extended to other binary systems, including the intermetallics FePt3, CoPt, CuPt, and Cu-3-Pt and the alloys Ag-Pt, Au-Pd, and Ni-Pt. The ternary intermetallic Ag2Pd3S can also be rapidly synthesized at low temperatures from a nanocomposite precursor comprised of Ag2S and Pd nanoparticles. Using this low-temperature solution-based approach, a variety of morphologically diverse nanomaterials are accessible: surface-confined thin films (planar and nonplanar supports), free-standing monoliths, nanomesh materials, inverse opals, and dense gram-scale nanocrystalline powders of intermetallic AuCu. Importantly, the multimetallic materials synthesized using this approach are functional, yielding a room-temperature Fe-Pt ferromagnet, a superconducting sample of Ag2Pd3S (T-C = 1.10 K), and a AuPd4 alloy that selectively catalyzes the formation of H2O2 from H-2 and O-2. Such flexibility in the synthesis and processing of functional intermetallic and alloy materials is unprecedented.