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The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties

Božica Sorgić ; Laboratory for Solid State Chemistry, Institute Ruđer Bošković P. O. Box 1016, 10001 Zagreb, Croatia
Želimir Blažina ; Laboratory for Solid State Chemistry, Institute Ruđer Bošković P. O. Box 1016, 10001 Zagreb, Croatia
Antun Drašner ; Laboratory for Solid State Chemistry, Institute Ruđer Bošković P. O. Box 1016, 10001 Zagreb, Croatia

Puni tekst: engleski, pdf (81 KB) str. 567-574 preuzimanja: 166* citiraj
APA 6th Edition
Sorgić, B., Blažina, Ž. i Drašner, A. (1999). The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties. Croatica Chemica Acta, 72 (2-3), 567-574. Preuzeto s https://hrcak.srce.hr/132240
MLA 8th Edition
Sorgić, Božica, et al. "The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties." Croatica Chemica Acta, vol. 72, br. 2-3, 1999, str. 567-574. https://hrcak.srce.hr/132240. Citirano 06.04.2020.
Chicago 17th Edition
Sorgić, Božica, Želimir Blažina i Antun Drašner. "The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties." Croatica Chemica Acta 72, br. 2-3 (1999): 567-574. https://hrcak.srce.hr/132240
Harvard
Sorgić, B., Blažina, Ž., i Drašner, A. (1999). 'The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties', Croatica Chemica Acta, 72(2-3), str. 567-574. Preuzeto s: https://hrcak.srce.hr/132240 (Datum pristupa: 06.04.2020.)
Vancouver
Sorgić B, Blažina Ž, Drašner A. The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties. Croatica Chemica Acta [Internet]. 1999 [pristupljeno 06.04.2020.];72(2-3):567-574. Dostupno na: https://hrcak.srce.hr/132240
IEEE
B. Sorgić, Ž. Blažina i A. Drašner, "The RENi4Ga (RE = Dy, Ho, Er) Intermetallic Compounds – Crystal Structure and Hydride Properties", Croatica Chemica Acta, vol.72, br. 2-3, str. 567-574, 1999. [Online]. Dostupno na: https://hrcak.srce.hr/132240. [Citirano: 06.04.2020.]

Sažetak
New ternary rare earth based intermetallic compounds of the composition RENi4Ga (RE = Dy, Ho, Er) were prepared and studied using X-ray powder diffraction. All compounds were found to be hexagonal and to crystallize in the space group P6/mmm with the CaCu5 type of structure, i.e., the same symmetry as their prototype binaries RENi5. The interaction with hydrogen was also studied. It was found that all intermetallics react readily and reversibly with hydrogen to form hydrides with hydrogen contents of up to 3.48 hydrogen atoms per alloy formula unit at room temperature. The entropy, the enthalpy and the Gibbs free energy of formation have been extracted from the equilibrium plateau in the pressure composition desorption isotherms. The thermodynamic parameters and the hydrogen capacity of the RENi4Ga–hydrogen systems are compared with the corresponding values for their aluminium analogues and briefly discussed.

Ključne riječi
rare earth intermetallics; hydrogen sorption; crystal structure; thermodynamic properties

Hrčak ID: 132240

URI
https://hrcak.srce.hr/132240

Posjeta: 256 *