Palladium--yttrium (1/1) | 37295-18-4

• 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: Palladium--yttrium (1/1)
• 英文别名: palladium;yttrium
• CAS: 37295-18-4
• 化学式: Pd₀Y₀
• 分子量: 106.07
• InChiKey: UBQALOXXVZQHGR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 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：

  氢化钇 、 钯 以 neat (no solvent, solid phase) 为溶剂， 生成 Palladium--yttrium (1/1)
  参考文献：
  名称：

  Pd-Y合金内部氧化制备的Pd-氧化钇复合材料内部界面的氢偏析

  摘要：

  摘要 Pd-Y 合金在 T ≥ 973 K 的气氛中被内部氧化形成 Pd-氧化钇复合材料。稀相 H 2 等温线和反应量热法已用于表征溶解的 H 在 Pd-氧化钇界面处的捕获。尽管之前已将 H 2 等温线测量用于其他金属-氧化物复合材料 [1,2] ，但这是用于表征 Pd 基复合材料中界面 H 偏析的反应量热测量的第一份报告。内部氧化的Pd 0.98 Y 0.02合金中H 2 溶液(303 K)的相对部分焓随着r =H/Pd而减小，即Δ HH =-85 kJ/mol H, r →0, -60 kJ /mol H，r = 0.004，-40 kJ/mol H，r =0.0055 和 -20 kJ/mol H，r =0.0065。在 303 K 疏散后，发现焓在 r →0 时为 Δ HH =-35 kJ/mol H，在 r =0.0025 时为 -15 kJ/mol H，即，一些被捕获的 H 未通过抽真空

  DOI：

  10.1016/s0925-8388(01)01751-0

文献信息

• Thermodynamics of hydrogen solution in Pd–Y alloys
  作者：Da Wang、Ted B. Flanagan

  DOI：10.1016/j.jallcom.2017.02.254

  日期：2017.6

  Abstract Equilibrium hydrogen isotherms (343–523 K) have been determined for some low Y content fcc Pd –Y alloys. At a given p H 2 ≤ 1 bar, the hydrogen solubilities increase with atom fraction Y, X Y . Partial thermodynamic parameters, ΔH H and ΔS H , have been determined from these isotherms over a range of H contents. Extrapolation of ΔH H and ΔS H to infinite dilution of H, give ΔH H ∘ and ΔS H

  摘要 平衡氢等温线 (343–523 K) 已被确定为一些低 Y 含量的 fcc Pd-Y 合金。在给定的 p H 2 ≤ 1 bar 下，氢的溶解度随着原子分数 Y, XY 的增加而增加。部分热力学参数 ΔH H 和 ΔS H 已根据这些等温线在一定的 H 含量范围内确定。将 ΔH H 和 ΔS H 外推到 H 的无限稀释，得到 1 2 H 2 (g, 1 bar) 吸收的 ΔH H ∘ 和 ΔS H ∘ 其中上标零表示固相中 H 的无限稀释，1 bar 表示气相中的H 2 。这些参数随着原子分数 Y 变得越来越负。热力学因素 (∂ lnp H 2 1 / 2 / ∂ ln r ) T 其中 r = H 与金属的摩尔比，用于解释扩散参数。从平衡等温线，lnp H 2 1 / 2 vs ln r ，斜率给出了 H 含量和温度范围内的热力学因子。作为 r 函数的热力学因子图显示最小值，这表明
• Deuterium Absorption in Pd0.9Y0.1 Alloy
  作者：P.A Poyser、M Kemali、D.K Ross

  DOI：10.1016/s0925-8388(96)03078-2

  日期：1997.5

  hysteresis is believed to be due to a reordering of the palladium–yttrium lattice driven by the hydrogen (deuterium) absorption. The second absorption/desorption cycle shows a wider hysteresis loop than the first but further cycles repeat the shape of the second loop. In-situ neutron diffraction measurements were also made on deuterated Pd 0.9 Y 0.1 at 303 K. These data support the hypothesis that the

  摘要 对钯固溶体合金 Pd 0.9 Y 0.1 中氘的压力-浓度依赖性进行了微重力测量。使用智能重量分析仪 (IGA) 并在温度范围 (60 °C≤ T ≤ 100 °C) 内进行测量。获得的结果揭示了吸收-解吸等温线中迄今未见的滞后效应。这种滞后被认为是由于由氢（氘）吸收驱动的钯-钇晶格的重新排序。第二个吸收/解吸循环显示出比第一个更宽的滞后回线，但进一步的循环重复第二个回线的形状。还在 303 K 下对氘化的 Pd 0.9 Y 0.1 进行了原位中子衍射测量。
• Temperature Dependence of H Permeation through Pd and Pd Alloy Membranes
  作者：Ted B. Flanagan、D. Wang

  DOI：10.1021/jp2064358

  日期：2012.1.12

  H permeabilities (normalized fluxes), have been measured through Pd and some Pd alloy membranes at a series of constant, upstream H-2 pressures with the downstream pressure being similar to 0 in the temperature range from 393 to 573 K. From these data, activation energies for H permeation, E-p, have been determined Conditions of constant upstream p(H2) are of most interest since most determinations of E-p in the literature have employed this boundary condition. Permeabilities have also been measured at a series of constant upstream H concentrations with the downstream concentration being similar to 0 and, under these conditions, the slopes of the Arrhenius plots give activation energies equivalent to those for H diffusion. It is shown here that under constant upstream p(H2) conditions, nonideality of the H leads to non-linear Arrhenius plots of P for Pd and especially for some Pd alloy membranes where the H-2 solubilities are significant even at moderate pH(2). For example, the permeabilities of a Pd0.77Ag0.23 alloy membrane and a Pd0.94Y0.06 alloy membrane are found to be nearly independent of temperature (423 to 523 K) in the range of constant upstream pressures from 16.1 to 81 kPa.
• Hydrogen isotherms over a wide temperature range for Pd and for Pd/oxide composites formed by internal oxidation of Pd–Al(Y) alloys
  作者：D Wang、H Noh、Ted B Flanagan、R Balasubramaniam

  DOI：10.1016/s0925-8388(02)00828-9

  日期：2003.1

  Isotherms have been measured for internally oxidized Pd-M alloys where M=Al or Y. After internal oxidation the alloys become composites of nanosized oxide precipitates within Pd matrices. Following the internal oxidation (1073 K) of the alloys H, isotherms are closely identical to those of Pd-H, however, differences develop after hydriding/dehydriding (cycling) which increase with %Al (Y). H-2 isotherms for the cycled forms of Pd and a Pd/alumina composite have been measured and compared at 323, 473, 513 and 553 K. At the latter two temperatures the characteristic plateaux appear to disappear for the cycled composite although hysteresis is still present indicating hydride formation/decomposition. Large differences are also observed between the isotherms for Pd and those for Pd composites at lower temperatures especially in the dilute phase and the two-phase region where conversion to the hydride phase is <50%. Similar behavior is found for a Pd/yttria composite obtained from internal oxidation of a Pd0.98Y0.02 alloy. The differences between H-2 isotherms for cycled Pd and internally oxidized (1073 K), cycled Pd-Al(Y) alloys are due to microstructural changes in the Pd matrix resulting from cycling in the presence of the small and closely spaced precipitates. Since internal oxidation at 1273 K results in larger and more widely-spaced precipitates than internal oxidation at 1073 K, it would be expected that after cycling the former alloys, their isotherms would be more similar to Pd-H than those internally oxidized at 1073 K. This has been confirmed experimentally. (C) 2002 Published by Elsevier Science B.V.
• A Comparative Study of the Solubility and Thermodynamics of Hydrogen in Pd1-xREx (RE = Dy, Gd, Sm, and Y; x = 0.05 and 0.08) Solid Solution Alloys
  作者：Sundara Ramaprabhu、Natarajan Rajalakshmi、Alarich Weiss

  DOI：10.1002/bbpc.19890930608

  日期：1989.6

  AbstractPressure‐composition‐temperature absorption isotherms have been determined for the Pd1‐xREx (RE = Dy, Gd, Sm, and Y; x = 0.05 and 0.08) solid solution face centered cubic alloys in the pressure and temperature ranges 2 ≦ P(H2)/mbar ≦ 1000 and 473 ≦ T/K ≦ 873 using the manometric method. The partial molar enthalpy of solution of hydrogen at infinite dilution (ΔH̄0H) becomes more exothermic with increasing content of RE. The partial molar excess entropy of hydrogen solution at infinite dilution (ΔS̄E.0H) decreases with xRE. A correlation of the atomic diameter (dRE) of the substituting rare‐earth metals when in solution in palladium with ΔH̄0H and with the metal‐hydrogen interaction shows that the increase in the exothermicity of the Pd1‐xREx solid solution alloys is due to the lattice expansion and an attractive metal‐hydrogen interaction. From the correlation of ΔH̄0H with dRE of Pd1‐xREx (x = 0.05 and 0.075), ΔH̄0H of Pd1‐xREx (RE = Yb, Ho, and Eu; x = 0.05 and 0.075) solid solution alloys have been predicted. The dependence of ΔH̄0H of the “expanded” and “contracted” Pd1‐xMx alloys on the size of the octahedral interstitial hole sites (rh) occupied by hydrogen atoms is discussed.