铂,加合(3:1)钛 | 12066-94-3

• 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
• 中文名称: 铂,加合(3:1)钛
• 英文名称: Platinum--titanium (3/1)
• 英文别名: platinum;titanium
• CAS: 12066-94-3
• 化学式: Pt₃Ti
• 分子量: 633.12
• InChiKey: MQSQJIRZNDRKHR-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

• 作为反应物：
  描述：

  臭氧 、 铂,加合(3:1)钛 以 neat (no solvent) 为溶剂， 生成 titanium oxide
  参考文献：
  名称：

  Fundamental studies of titanium oxide–Pt(100) interfaces

  摘要：

  Surface structures formed by titanium oxide thin films at a Pt(100) surface have been studied by STM (scanning tunneling microscopy), LEED (low energy electron diffraction), AES (Auger electron spectroscopy), XPS (X-ray photoelectron spectroscopy), XPD (X-ray photoelectron diffraction) and He+-ISS (He+ ion scattering spectrometry) in order to explore and elucidate stable high-temperature structures that may be formed at titania-Pt interfaces and provide a basis for characterizing the chemistry of titania thin films on Pt(100). Titanium oxide films were produced by two different methods. First, titanium oxide films on Pt(100) were produced by oxidation using ozone (O-3) of a Pt3Ti surface alloy at 300K and annealing at 1000K. Smooth thin films with a (3 x 5) structure were observed at 1 ML (monolayer) using this procedure, and we propose that the (3 x 5) structure is due to one layer of a Ti2O3 film that is similar to the (1 x 2) strands formed on reduced TiO2(110) Surfaces. Structures prepared by this method showed particularly "flat" terraces without islands. Second, TiOx films were formed by Ti evaporation and deposition on Pt(100) in 6.7 x 10(-5) Pa O-2 and annealing the substrate above 750K in vacuum. A (35) structure was produced also for these films below similar to1 ML. A (4 x 3 root5R60degrees) structure, referred to as the "24-structure", was observed after deposition of similar to2 ML and after annealing at 850-1000 K. We propose a model for this structure composed of TiO2 tetragonal nets with some O atoms in the second layer. The (4 x 3root5R60degrees) film changed to one with a (3 x 5) structure after annealing above 960 K in vacuum. TiO2 clusters were observed in our investigations, but mainly after Ti deposition sufficient to form several monolayers and after annealing at 1000 K. Under those conditions, a small number of (3 x 5) domains were observed also, but it was surprising that clean (1 x 1)- and (5 x 20)-Pt(100) domains still existed over similar to2% of the surface. TiO2 clusters decomposed to form a (2root2 x 2root2)R45degrees structure, which we propose to be Ti5O8, and (3 x 5) domains after annealing at 1300 K. Within our models, the composition of all titanium oxide ultrathin films on a Pt(100) surface are TiO2-1.5 after annealing at 850-1300K. Chemical changes occurring during annealing of titanium oxide films include Ti dissolution (alloying) into the bulk of the Pt(100) crystal. We suggest that these results will have important consequences for the understanding and modeling of catalysis of related systems. (C) 2004 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.susc.2004.08.006
• 作为产物：
  描述：

  四氢化物钛 、 铂 以 neat (no solvent) 为溶剂， 生成 铂,加合(3:1)钛
  参考文献：
  名称：

  己烷在Pt 3 Ti多晶催化剂上的骨架重排反应

  摘要：

  己烷的反应已在置于超高真空装置内的电池中的Pt 3 Ti金属间多晶样品上进行，在该装置中，可在反应之前和之后通过俄歇电子能谱（AES）监测表面。催化结果表明，由于表面组成的变化，Pt 3 Ti对实验预处理非常敏感。Pt 3获得的主要结果Ti化合物具有（i）低催化活性，（ii）高度脱氢的产物（苯）的形成和（iii）同源产物的形成，而未观察到碳质沉积物。这些结果可以通过考虑没有或很少的氢化学吸附来解释。同源反应需要存在双金属的Pt] Ti位点，钛可以被轻微地氧化。这些双金属位点还负责使用Pt 3 Ti（或“ Pt 3 TiO x ”）获得的大量苯。Pt 3 Ti（或“ Pt 3 TiO x”）具有较低的氢化学吸附能力，表明此类化合物参与了强烈的金属-载体相互作用（SMSI）现象。然而，在清洁表面上观察到的催化行为不同于在SMSI状态下在负载的Pt / TiO 2催化剂上获得的催化行为。

  DOI：

  10.1016/0021-9517(90)90236-d
• 作为试剂：
  描述：

  高氯酸 、 氧气 在 铂,加合(3:1)钛 作用下， 以 高氯酸 为溶剂， 生成 水
  参考文献：
  名称：

  通过调节表面电子结构来改变用于还原氧的电催化剂的活性。

  摘要：

  DOI：

  10.1002/anie.200504386

文献信息

• Preparation and Electrochemical Activities of Pt–Ti Alloy PEFC Electrocatalysts
  作者：Y. Kawasoe、S. Tanaka、T. Kuroki、H. Kusaba、K. Ito、Y. Teraoka、K. Sasaki

  DOI：10.1149/1.2756369

  日期：——

  cell (PEFC) conditions. Nanocrystalline Pt-Ti alloy electrocatalysts with a catalyst grain size of several nanometers have been successfully prepared by the colloidal and sol-gel method, characterized by X-ray diffraction, field-emission scanning electron microscope, scanning transmission electron microscope, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. Electrochemical activities

  钛是最稳定的材料之一，在强酸性聚合物电解质燃料电池 (PEFC) 条件下保持不溶解。采用胶体和溶胶-凝胶法成功制备了催化剂粒径为几纳米的纳米晶Pt-Ti合金电催化剂，并通过X射线衍射、场发射扫描电子显微镜、扫描透射电子显微镜、能量色散X射线分析和 X 射线光电子能谱。电化学活性通过使用膜电极组件的电流-电压特性测量来评估，其中包含或不包含 100 ppm CO 的加湿 H 2 燃料、循环伏安法和在 0.1 M HClO 4 中的 CO 汽提伏安法。Pt-Ti 合金电催化剂表现出比纯 Pt 催化剂更高的电化学性能，即，
• Skeletal rearrangement reactions of hexanes on Pt3Ti polycrystalline catalysts
  作者：A DAUSCHER

  DOI：10.1016/0021-9517(90)90236-d

  日期：1990.2

  performed on a Pt3Ti intermetallic polycrystalline sample placed in a cell housed within an ultrahigh-vacuum apparatus where the surface can be monitored before and after the reactions by Auger electron spectroscopy (AES). The catalytic results show that Pt3Ti is very sensitive to experimental pretreatments, due to changes in surface composition. The main results obtained with the Pt3Ti compound are

  己烷的反应已在置于超高真空装置内的电池中的Pt 3 Ti金属间多晶样品上进行，在该装置中，可在反应之前和之后通过俄歇电子能谱（AES）监测表面。催化结果表明，由于表面组成的变化，Pt 3 Ti对实验预处理非常敏感。Pt 3获得的主要结果Ti化合物具有（i）低催化活性，（ii）高度脱氢的产物（苯）的形成和（iii）同源产物的形成，而未观察到碳质沉积物。这些结果可以通过考虑没有或很少的氢化学吸附来解释。同源反应需要存在双金属的Pt] Ti位点，钛可以被轻微地氧化。这些双金属位点还负责使用Pt 3 Ti（或“ Pt 3 TiO x ”）获得的大量苯。Pt 3 Ti（或“ Pt 3 TiO x”）具有较低的氢化学吸附能力，表明此类化合物参与了强烈的金属-载体相互作用（SMSI）现象。然而，在清洁表面上观察到的催化行为不同于在SMSI状态下在负载的Pt / TiO 2催化剂上获得的催化行为。
• Ti–Pt intermetallic compound catalysts more active than Pt for hydrogen dissociation and ethylene hydrogenation
  作者：Takayuki Komatsu、Daigo Satoh、Ayumu Onda

  DOI：10.1039/b102415a

  日期：——

  The intermetallic compound, TiPt3, showed much higher catalytic activity than pure Pt catalyst for H2–D2 equilibration and ethylene hydrogenation, whereas Ti3Pt only catalyzed the former reaction with a similar activity to TiPt3.

  金属间化合物 TiPt3 对 H2-D2 平衡和乙烯加氢表现出比纯 Pt 催化剂高得多的催化活性，而 Ti3Pt 仅催化前一种反应，具有与 TiPt3 相似的活性。
• Structure and chemisorptive properties of the Pt3Ti surface
  作者：U BARDI

  DOI：10.1016/0021-9517(86)90085-0

  日期：1986.7

  (LEED), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES) were used to determine the structure and composition of the surfaces of [111] and [100] oriented crystals of an ordered alloy of bulk stoichiometry Pt3Ti. Thermal desorption spectroscopy (TDS) was used to study the adsorption of carbon monoxide and hydrogen on these surfaces. The clean, annealed surface of [111] orientation

  使用低能电子衍射（LEED），X射线光电子能谱（XPS）和俄歇电子能谱（AES）来确定有序合金的[111]和[100]取向晶体的表面结构和组成化学计量比Pt 3 Ti 热解吸光谱法（TDS）用于研究一氧化碳和氢在这些表面上的吸附。[111]取向的干净，退火表面具有大块晶体的截断所期望的有序结构，该结构由（50％Pt + 50％Ti）和100％Pt的交替原子行组成。[100]取向的表面还具有规则的截断结构，其中最外层为c中的50％Ti（2×2）晶格和第二层，即100％Pt层。在接近室温的温度下，CO在Ti位点的吸附是解离的，而在Pt位点的吸附是分子的。用Ti取代表面中的Pt原子会改变Pt-Pt对位点的分布，从而消除大部分CO分子桥键合的位点。与从纯Pt表面观察到的非对称峰形状相反，对于从合金表面解吸的CO仅观察到一个对称的TDS峰，我们认为这是桥位消除的结果。在低温（230 K）下，观察到C
• Superlattice leed patterns observed from [111] and [100] oriented single crystals of TiPt3
  作者：U. Bardi、P.N. Ross

  DOI：10.1016/0039-6028(84)90220-6

  日期：1984.10