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CePt2 | 12014-79-8

中文名称
——
中文别名
——
英文名称
CePt2
英文别名
Cerium;platinum;cerium;platinum
CePt2化学式
CAS
12014-79-8
化学式
CePt2
mdl
——
分子量
530.28
InChiKey
XILVIOYLHATGQX-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    -0.01
  • 重原子数:
    3
  • 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

SDS

SDS:444f3620b3c7e46cb068abe9103aa2aa
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反应信息

  • 作为反应物:
    描述:
    参考文献:
    名称:
    Pt / Ce结晶合金前驱体衍生的铂/二氧化铈CO氧化催化剂
    摘要:
    用O 2,N 2 O或CO / H 2处理的Pt / Ce合金产生对CO氧化具有活性的Pt /二氧化铈催化剂。活性最高的催化剂是通过在720 K的条件下对Pt 3 Ce 7进行N 2 O处理而产生的,这导致Pt和二氧化铈相的分散度最高。这反映出N 2 O发生的较小的放热,这显然是生产高活性催化剂的关键要求。这些Pt 3 Ce 7的性能衍生的催化剂可与最近通过湿化学技术制备的最好的材料相媲美。在所有情况下,大多数活性材料对于X射线衍射都是不可见的,并且催化剂显示出非常低的CO可滴定的Pt面积(<0.05 CO / Pt)。在570 K下H 2的预还原大大提高了给定催化剂的反应性。CO TPR表明,最高活性与〜510 K时的还原态有关,表明二氧化铈会促进金属促进CO氧化。似乎这种高活性可能与二氧化铈溢出到Pt上有关,合金前体中Pt和Ce的原子级混合促进了溢出。
    DOI:
    10.1006/jcat.1996.0011
  • 作为产物:
    描述:
    在 H2 作用下, 以 neat (no solvent, solid phase) 为溶剂, 生成 CePt2
    参考文献:
    名称:
    镧系元素-铂金属间化合物作为直接乙醇 PEM 燃料电池的阳极电催化剂
    摘要:
    介绍了一类新型阳极电催化剂在乙醇氧化中的电化学稳定性和电催化性能。Laves 相金属间化合物 LnPt 2 (Ln = Ce,Pr) 的纳米粉末被用来利用四价镧系元素在阳极电催化剂中的强氧化能力。这些纳米粉末在聚合物电解质膜 (PEM) 燃料电池的阳极环境中是稳定的。运行中的 PEM 燃料电池中的稳态极化曲线表明,新的电催化剂对乙醇的电氧化具有活性。新的电催化剂展示了大约。基于阳极中的总电催化剂表面积,在给定的电流密度下,过电位比 PtRu 高 225 mV,但这可能是由于颗粒尺寸和电极结构的问题。
    DOI:
    10.1149/1.2192708
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文献信息

  • Sodium Vapor-Induced Synthesis of Intermetallic Pt<sub>5</sub>Ce Compound Nanoparticles
    作者:Hiroshi Itahara、Yasuhiro Takatani、Naoko Takahashi、Satoru Kosaka
    DOI:10.1021/acs.inorgchem.0c01945
    日期:2020.9.21
    We have developed a synthetic route that uses sodium for the production of intermetallic Pt5Ce nanoparticles (ca. 6 nm average diameter) supported on carbon powder. Sodium melt was demonstrated to reduce a powder mixture of PtCl2 and CeCl3 to form submicrometer Pt5Ce particles with the simultaneous formation of NaCl. The NaCl–CeCl3 melt mixture and Na melt were formed during heating, which led to a
    我们已经开发出一种合成路线,该路线使用钠来生产负载在碳粉上的金属间Pt 5 Ce纳米颗粒(平均直径约6 nm)。已证明钠熔体可还原PtCl 2和CeCl 3的粉末混合物,形成亚微米级的Pt 5 Ce颗粒,同时形成NaCl。NaCl–CeCl 3熔体混合物和Na熔体在加热过程中形成,这导致Pt和Ce之间的反应均匀,并且熔体引起晶粒长大。然后修改合成程序,以将钠蒸气供应到负载在碳粉上的金属源附近,以抑制晶粒长大。铂5Ce纳米颗粒成功地在碳载体上形成,具有高负载和高分散性。
  • Formation of a superlattice structure and suppression of the magnetic order in Ce1−Pb Pt2 (0 ⩽x&lt; 0.5)
    作者:K.T. Matsumoto、Y. Saiga、Y.F. Inoue、T. Takabatake
    DOI:10.1016/j.jallcom.2015.02.051
    日期:2015.6
    cubic C15 (MgCu 2 type) structure orders antiferromagnetically at 1.8 K. Single crystalline samples of Ce 1− x Pb x Pt 2 (0 x . 5) have been prepared by the self-flux method. It is found that Pb atoms replace preferentially the Ce atoms in the face-center-cubic sublattice, forming a superlattice structure of the cubic C15b (MgSnCu 4 type). We have measured the specific heat, magnetic susceptibility, and
    摘要 Laves 相化合物 CePt 2 以立方 C15(MgCu 2 型)结构结晶,在 1.8 K 下呈反铁磁性有序排列。通过自熔制备了 Ce 1− x Pb x Pt 2 (0 x . 5) 单晶样品方法。发现Pb原子优先取代面心立方亚晶格中的Ce原子,形成立方C15b(MgSnCu 4 型)的超晶格结构。我们测量了比热、磁化率和电阻率。结果表明,Ce 价数在 Ce 1− x Pb x Pt 2 ( x ⩽ 0.43) 中保持三价,但超晶格的形成抑制了 x = 0.43 时反铁磁有序温度低于 0.35 K。
  • Kristallstrukturen aus CaBe2Ge2- und CeMg2Si2-analogen Blöcken: Die PhosphideLnPt2P2−x (Ln: La, Sm)
    作者:Anette Imre、Andrea Hellmann、Albrecht Mewis
    DOI:10.1002/zaac.200700227
    日期:2007.11
    Crystal Structures of CaBe2Ge2 and CeMg2Si2 analogous Units: The Phosphides LnPt2P2−x (Ln: La, Sm) Single crystals of LaPt2P1.44 (a = 4.174(1), c = 19.212(5) A) were grown by reaction of vaporous phosphorus with LaPt2 at 1050 °C during two weeks, whereas SmPt2P1.50 (a = 4.131(1), c = 19.086(4) A) was synthesized by heating mixtures of the elements at 900 and 1100 °C (60 h) and annealing at 1050 °C
    CaBe2Ge2 和 CeMg2Si2 类似单元的晶体结构: 磷化物 LnPt2P2-x (Ln: La, Sm) LaPt2P1.44 单晶 (a = 4.174(1), c = 19.212(5) A) 通过气相磷反应生长LaPt2 在 1050 °C 下持续两周,而 SmPt2P1.50 (a = 4.131(1), c = 19.086(4) A) 是通过在 900 和 1100 °C (60 h) 下加热元素混合物并退火合成的在 1050 °C (300 小时)。两种磷化物均通过单晶 X 射线方法进行研究。它们的晶体结构 (I4/mmm; Z = 4) 由 CaBe2Ge2 和 CeMg2Si2 类似单元沿 [001] 相互交替组成。P1 原子的位置被不完全占据,导致偏离 1:2:2 化学计量。通过 X 射线粉末衍射研究了另一种化合物 LnPt2P2-x,得到以下晶格常数:a =
  • Hydrogen absorbing characteristics of R–M (R=La, Ce; M=Co, Rh, Ir, Ni, Pd, Pt) binary systems
    作者:J. Kadono、K. Hirano、S. Nishiuchi、R. Ariga、S. Yamamoto、T. Tanabe、H. Miyake
    DOI:10.1016/j.jallcom.2005.04.073
    日期:2006.2
    The capacity, rate and reversibility of the hydrogen absorbing/desorbing reaction have been measured for the binary systems composed of rare earth metal, R (La or Ce), and transition metal, M (Co, Rh, Ir, Ni, Pd or Pt), by Sieverts' method. These experimental results were discussed by comparing with the theoretical ones; density of states, cohesive energy and energy fluctuation, which were calculated by the extended Huckel method. Major results obtained are as follows. (1) The capacity of hydrogen absorption decreases almost linearly with increasing M components in R-M systems and it is explained in terms of the density of states. (2) The rate of hydrogen-absorbing reaction in La-M systems are larger than that of Ce-M systems. The larger absorption rate corresponds to the larger energy fluctuation. (3) The reversibility of the hydrogen absorbing/desorbing reaction is closely related with the cohesive energy of these systems. When the cohesive energy of the hydrogen absorbed system is large, a reverse (i.e. desorbing) reaction hardly occurs. (c) 2005 Elsevier B.V. All rights reserved.
  • Structure and magnetism in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CePt</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
    作者:J. M. Lawrence、Y.-C. Chen、G. H. Kwei、M. F. Hundley、J. D. Thompson
    DOI:10.1103/physrevb.56.5
    日期:——
    Neutron diffraction results for CePt2+x alloys with 0 less than or equal to x less than or equal to 1, combined with low resolution room temperature x-ray diffraction and electron microscopy, confirm that the alloys are single phase. The data dan be fit for all x with nearly equal agreement factors by structural refinements in either the C15 (MgCu2) phase br the C15b (AuBe5) structure. Observation of small peaks in the diffraction pattern for CePt, that are forbidden in C15 suggest that C15b is the correct structure for this composition (and possibly for the other alloy compositions); and application of Hamilton's test indicates that the C15b structure is preferred over the C15 to the 95% confidence level. Magnetic susceptibility and specific heat measurements indicate that the cerium is essentially localized and trivalent for all x. The antiferromagnetism observed for CePt, may be absent in the alloys, which behave as typical nonmagnetic cerium heavy fermion compounds with Kondo temperature T-K approximate to 2 K.
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