Lanthanum-nickel alloy

LaNi  Identifiers

CAS Number

* 12142-63-1 Y

Properties

Chemical formula

| LaNi
Molar mass | 197.60

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Lanthanum forms several alloys with nickel, including LaNi5, La2Ni7, LaNi2, LaNi3, La2Ni3, LaNi and La3Ni etc.[1]

## Contents

* 1 LaNi5
* 2 Other alloys
* 3 See also
* 4 References

## LaNi5

LaNi5 Names

Other names

Lanthanum pentanickel
Pentanickel lanthanum

Identifiers

CAS Number

* 12196-72-4 Y

Properties

Chemical formula

| LaNi5
Molar mass | 432.37
Appearance  | gold solid[2]
Density | 7.950 g/cm3[3]

Solubility in water

| reacts with water[3]

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

LaNi5 is an intermetallic compound with a CaCu5 structure. It belongs to the hexagonal crystal system.[4] It can be oxidized by air above 200 °C, and react with hydrochloric acid, sulfuric acid or nitric acid above 20 °C.[5] LaNi5 can be used as a catalyst for hydrogenation reactions.[6][7]

## Other alloys

In addition to LaNi5, there are other alloys such as La2Ni7, LaNi2, LaNi3, La2Ni3, LaNi, and La3Ni, and nonstoichiometric alloys such as LaNi2.286 (tetragonal, space group I4̄2m).[8] The nickel atoms in LaxNiy can also be replaced by other atoms, such as LaNi2.5Co2.5.[9]

## See also

* List of named alloys

## References

1. ↑ Picard, G. S.; Mottot, Y. E.; Tremillon, B. L. Study on electrowinning of solid lanthanum-nickel alloys in lithium chloride-potassium chloride eutectic melt. Proceedings - Electrochemical Society, 1984. 84-2. pp 585-602.
2. ↑ 13399 MSDS. Alfa Aesar. [2017-11-18]
3. ↑ 3.0 3.1 Sigma-Aldrich Co., Lanthanum-nickel alloy. Retrieved on 2017-11-18.
4. ↑ Zhang, Yang-huan; Li, Peng-xin; Yang, Tai; Zhai, Ting-ting; Yuan, Ze-ming; Guo, Shi-hai (December 2014). "Effects of substituting La with M (M=Sm, Nd, Pr) on electrochemical hydrogen storage characteristics of A2B7-type electrode alloys" (in en). Transactions of Nonferrous Metals Society of China 24 (12): 4012–4022. doi:10.1016/S1003-6326(14)63563-9. https://linkinghub.elsevier.com/retrieve/pii/S1003632614635639.
5. ↑ Goncharuk, A. B.; Endrzheevskaya, S. N. Stability of lanthanum nickel (LaNi5) intermetallide in liquid and gaseous mediaTemplate:Ru. Poroshkovaya Metallurgiya (Kiev), 1980. 8: 77-79
6. ↑ Imamura, Hayao; Kato, Yuzo; Yamada, Kazuhiro; Tsuchiya, Susumu (January 1986). "Preparation and properties of raney catalysts from rare earth intermetallic compounds" (in en). Applied Catalysis 27 (2): 243–256. doi:10.1016/S0166-9834(00)82921-8. https://linkinghub.elsevier.com/retrieve/pii/S0166983400829218.
7. ↑ 吴富英, 安越, 宋林,等. 氟处理后的镧镍五对乙基咔唑的催化加氢性能[J]. 化学反应工程与工艺, 2015, 31(5):407-411.
8. ↑ A.V. Klimyenko, J. Seuntjens, L.L. Miller, B.J. Beaudry, R.A. Jacobson, K.A. Gschneidner (November 1988). "Structure of LaNi2.286 and the La-Ni system from LaNi1.75 to LaNi2.50". Journal of the Less Common Metals 144 (1): 133–141. doi:10.1016/0022-5088(88)90357-8. ISSN 0022-5088. https://linkinghub.elsevier.com/retrieve/pii/0022508888903578. Retrieved 2018-11-27.
9. ↑ Sakai T, Miyamura H, Kuriyama N, et al. The influence of small amounts of added elements on various anode performance characteristics for LaNi2. 5Co2. 5-based alloys[J]. Journal of the Less common Metals, 1990, 159: 127-139.

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Lanthanum compounds

* LaB6
* LaBr3
* LaC2
* LaCl3
* La2(CO3)3
* LaH10
* LaF3
* La2O3
* La(OH)3

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Nickel compounds

Nickel(0)|

* Ni(CO)4
* Ni(COD)2

Nickel(II)|

* NiBr2
* NiCO3
* NiCl2
* NiCrO4
* NiF2
* NiI2
* Ni(NO2)2
* Ni(NO3)2
* NiO
* Ni(OH)2
* Ni3(PO4)2
* NiS
* NiSO4
* NiTiO3
* Ni(acac)2
* xNi(NO2)6
* xNiF4
* xNiCl4
* xNiBr4
* xNiI4

Nickel(III)|

* Ni2O3
* NiOOH

Nickel(IV)|

* K2NiF6
* MNiOx

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