查看“︁CaPt2”︁的源代码

{{DISPLAYTITLE:CaPt<sub>2</sub>}}
{{Chembox
| Name =  CaPt<sub>2</sub>
| NameEn = 
|ImageFile=C15-MgCu2(1).jpg
| OtherNames = Pt<sub>2</sub>Ca<BR>钙铂合金(1:2)<BR>二铂化钙
| Section1 = {{Chembox Identifiers
|   CASNo = 57609-29-7
|   CASNo_Ref = {{cascite|correct|CAS}}
|   PubChem = 
|   SMILES =  }}
| Section2 = {{Chembox Properties
|   Formula = CaPt<sub>2</sub>
|   MolarMass = 430.23
|   Appearance = 
|   Density = 12.8 g/cm<sup>3</sup>
|   MeltingPt = 
|   BoilingPt = 
|   Solubility =  }}
| Section3 = {{Chembox Hazards
|   MainHazards = 
|   FlashPt = 
|   Autoignition =  }}
}}
'''CaPt<sub>2</sub>'''是一种由[[钙]]和[[铂]]构成的[[金属间化合物]]，可以结晶。它在高温、低压下蒸馏，可以得到金属[[钙]]。<ref>Manfred Mangelmann. Thermal stability of binary alloys of noble metals with alkaline earth metals or lanthanides. ''Kernforschungszentrum Karlsruhe, [Ber.]'' [R], 1975. CODEN: KKBRAY.</ref>

== 制备 ==
CaPt<sub>2</sub>可由[[氧化钙]]粉末和[[铂]]粉在[[氢气]]中加热至1200 °C反应得到：<ref name=bro1962>{{cite journal|last1=Bronger|first1=W.|last2=Klemm|first2=W.|title=Darstellung von Legierungen des Platins mit unedlen Metallen|journal=Zeitschrift für anorganische und allgemeine Chemie|volume=319|issue=1-2|year=1962|pages=58–81|issn=0044-2313|doi=10.1002/zaac.19623190110}}</ref>
:: <math>\mathsf{ 2Pt + CaO + H_2 \ \xrightarrow{1200^oC}\ CaPt_2 + H_2O\uparrow}</math>
它也可由单质粉末的混合物按化学计量比在密封的铁制反应器中于1100 °C反应得到：<ref name=jac1990/>:
:: <math>\mathsf{ 2Pt + Ca \ \xrightarrow{1100^oC}\ CaPt_2 }</math>

反应的吉布斯标准生成焓为{{math|Δ''G''°}} = −2.454(50)×10<sup>5</sup> + 9.3·{{math|''T''}} kJ/mol<ref name=jac1990>{{книга
 |автор         = K. T. Jacob, K. P. Abraham, S. Ramachandran
 |заглавие      = Gibbs energies of formation of intermetallic phases in the systems Pt-Mg, Pt-Ca, and Pt-Ba and some applications
 |издание       = Metallurgical Transactions B
 |год           = 1990
 |volume        = 21
 |номер         = 3
 |pages         = 521—527
 |doi           = 10.1007/BF02667864
 |issn          = 
}}</ref>。

== 结构 ==
CaPt<sub>2</sub>属[[立方晶系]]，空间群Fd3m，晶胞参数a=0.7629 nm，Z=8，具有MgCu<sub>2</sub>（[[拉弗斯相]]）结构。<ref name=bro1962/><ref name="Лякишев">{{книга
 |заглавие      = Диаграммы состояния двойных металлических систем 
 |ответственный = Под ред. Н. П. Лякишева
 |место         = М.
 |издательство  = Машиностроение
 |год           = 1996
 |том           = 1
 |страниц       = 992
 |isbn          = 5-217-02688-X
}}</ref><ref>{{книга
 |автор         = B. Predel
 |заглавие      = Ca-Pt (Calcium-Platinum)
 |издание       = Landolt-Börnstein - Group IV Physical Chemistry
 |год           = 1993
 |volume        = 5c
 |номер         = 
 |pages         = 1—2
 |doi           = 10.1007/10086082_720
 |issn          = 
}}</ref><ref>{{книга
 |автор         = B. Predel
 |заглавие      = Ca-Pt (Calcium-Platinum)
 |издание       = Landolt-Börnstein - Group IV Physical Chemistry
 |год           = 2012
 |volume        = 12B
 |номер         = 
 |pages         = 168
 |doi           = 10.1007/978-3-540-44756-6_116
 |issn          = 
}}</ref><ref>{{книга
 |автор         = A. Palenzona
 |заглавие      = Contribution to the study of the binary phase diagrams Ca-Pt and Sr-Pt
 |издание       = Journal of the Less Common Metals
 |год           = 1981
 |volume        = 78
 |номер         = 2
 |pages         = 49—53
 |doi           = 10.1016/0022-5088(81)90143-0
 |issn          = 
}}</ref>

== 应用==
它可用作[[燃料电池]]的电极催化剂，<ref>Ifan Erfyl Lester STEPHENS, ''et al''. [http://www.google.com/patents/CA2891134A1?cl=en Platinum and palladium alloys suitable as fuel cell electrodes] {{Wayback|url=http://www.google.com/patents/CA2891134A1?cl=en |date=20161020060547 }}. 2013. CA2891134A1</ref>也可用于铂的提纯。<ref>Uwe Berndt, Bernhard Erdmann, Cornelius Keller. [https://patents.google.com/patent/US3994718 Intermetallic compounds and metal purification] {{Wayback|url=https://patents.google.com/patent/US3994718 |date=20190814030349 }}, 1972. US3994718A</ref>也有人提出可用此来得到高纯度的金属钙。<ref name=jac1990/>

== 参考文献 ==
{{reflist}}

{{inorganic-compound-stub}}

[[Category:钙化合物]]
[[Category:铂化物]]
[[Category:金属间化合物]]