Synthesis and Structures of the C5Me4SiMe3-Supported Polyhydride Complexes over the Full Size Range of the Rare Earth Series

AbstractA recently discovered the rare-earth-rich site in Capacsaya, located at 123 km northwest of Cusco, at the south of Peru, contains significant quantities of light and heavy rare-earth elements such as neodymium, lanthanum, cerium, europium, and yttrium. This work reports the identification of rare-earth elements and their associated minerals using scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction analyses. Five (5) samples extracted from different locations at the Capacsaya site were characterized and identified K-feldspar as the mineral associated with the rare-earth elements in a representative sample with a high concentration of lanthanum and cerium. The results showed rare-earth elements contained within the mineral phase monazite, being cerium the dominant element in the phase (La, Ce, Nd)PO$$_4$$ 4 . Finally, through the electrostatic separation process we demonstrate that it was possible to achieve an efficient separation of the K-feldspar phase in the particle size range 75–150 $$\upmu$$ μ m.

Download Full-text

Thermodynamics of Fe-Rich Intermetallics along the Rare Earth Series

Journal of Chemical & Engineering Data ◽

10.1021/je7003353 ◽

2007 ◽

Vol 52 (6) ◽

pp. 2350-2358 ◽

Cited By ~ 19

Author(s):

D. Gozzi ◽

M. Iervolino ◽

A. Latini

Keyword(s):

Rare Earth ◽

Rare Earth Series ◽

The Rare Earth

Download Full-text

Some electronic factors influencing superconductivity in some rare-earth-like elements and the beginning of the rare-earth series

Chinese Physics Letters ◽

10.1088/0256-307x/4/7/003 ◽

1987 ◽

Vol 4 (7) ◽

pp. 297-300

Author(s):

Zhang Liyuan

Keyword(s):

Rare Earth ◽

Factors Influencing ◽

Rare Earth Series ◽

The Rare Earth

Download Full-text

Variation of 4f hybridization across the rare-earth series

Journal of Electron Spectroscopy and Related Phenomena ◽

10.1016/j.elspec.2004.02.087 ◽

2004 ◽

Vol 137-140 ◽

pp. 491-494

Author(s):

C Laubschat ◽

S.L Molodtsov ◽

M Finken ◽

Yu Kucherenko ◽

G Behr ◽

...

Keyword(s):

Rare Earth ◽

Rare Earth Series ◽

The Rare Earth

Download Full-text

Electronic Structure Trends Across the Rare-Earth Series in Superconducting Infinite-Layer Nickelates

Physical Review X ◽

10.1103/physrevx.11.011050 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Emily Been ◽

Wei-Sheng Lee ◽

Harold Y. Hwang ◽

Yi Cui ◽

Jan Zaanen ◽

...

Keyword(s):

Electronic Structure ◽

Rare Earth ◽

Infinite Layer ◽

Rare Earth Series ◽

The Rare Earth

Download Full-text

Structural Systematics of Rare Earth Complexes. V. The Hydrated 1 : 1 Adducts of 2,2′:6′,2″-Terpyridine With the Lanthanoid(III) Chlorides

Australian Journal of Chemistry ◽

10.1071/ch9940365 ◽

1994 ◽

Vol 47 (2) ◽

pp. 365 ◽

Cited By ~ 36

Author(s):

CJ Kepert ◽

WM Lu ◽

BW Skelton ◽

AH White

Keyword(s):

Rare Earth ◽

Monoclinic Phase ◽

Structural Type ◽

Detailed Examination ◽

Rare Earth Complexes ◽

Rare Earth Series ◽

The Rare Earth

Detailed examination of the strucures of the title salts, (tpy)LnCl3.xH2O, across the totality of the rare earth series shows a remarkable interplay of structural type and detail. The predominant phase is the previously studied monoclinic Cm array, a ≈ 7.5, b ≈ 16.6, c ≈ 9.8 Ǻ, β = 90.2°, V ≈ 2200 Ǻ3, Z = 2 formula units. For the initial members of the series (La → Nd ), x is 8; for Dy → Er and Lu, x = 7 is accommodated within the same lattice, as are intermediate degrees of hydration for Sm → Gd . A second monoclinic phase, P 21/c, a ≈ 11.6, b ≈ 13.9, c ≈ 13.8 Ǻ, β ≈ 92.3°, V ≈ 2200 Ǻ3, Z = 4 formula units, is found for Yb and Lu (x = 7); the same phase but with β acute (a ≈ 11.3, b ≈ 14.5, c ≈ 13.3 Ǻ, β ≈ 82.2°, V ≈ 2140 Ǻ3, Z = 4 formula units) is found for Tm (and Y) (x = 6). A less hydrated binuclear phase, x=1, has also been observed for Sm , a 10.179(3), b 9.928(4), c 9.748(4) Ǻα 112.61(3), β 109.85(3), γ 94.72(3)°, V 829.3 Ǻ3, Z = 1 dimer.

Download Full-text