A multivariate approach at the thermodynamic properties of rare earth elements

Pereira, Hércules Abie; Frescura, Lucas Mironuk; Menezes, Bryan Brumelhaus de; Duarte, Rafael Mendonça; Villetti, Marcos A.; Hilgemann, Maurício; Rosa, Marcelo Barcellos da

doi:10.1016/j.tca.2019.178315

Cited by 9 publications

(3 citation statements)

References 51 publications

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“…Based on the atomic weights and locations in the periodic table, total REEs (TREEs) are generally classified into two sub-groups: light REEs (LREEs) and heavy REEs (HREEs) [19,55,56]. In this study, LREEs includes lanthanum (La) through samarium (Sm) plus scandium (Sc), while europium (Eu) through lutetium (Lu) and yttrium (Y) belong to HREEs.…”

Section: Sample Characterizationmentioning

confidence: 99%

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Zhang

2021

Powder Technology

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Section: Sample Characterizationmentioning

confidence: 99%

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Zhang

2021

Powder Technology

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“…The well D and Cretaceous samples show highest absolute REY and ΣREY values and a high Gd PAAS /Lu PAAS ratio (Figure 12). Additionally, these samples exhibit higher absolute HREE values but with a decreasing trend towards higher masses, which can be explained by pronounced weathering (Pereira et al, 2019). The Paleozoic and well S samples do not show this characteristic REY pattern.…”

Section: Comparison and Stratigraphic Correlation Of Cuttings With Pa...mentioning

confidence: 88%

Geothermal reservoir rocks of the Büyük Menderes Graben (Turkey): stratigraphic correlation by a multiproxy approach

Fechner¹,

Wolfgramm²,

Kölbel³

et al. 2021

Turkish J Earth Sci

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This paper focuses on the correlation of two different marble units from an approximately 3,900 m deep geothermal exploration well (GP-1) in western Turkey by petrographical and geochemical data. Future geothermal exploration drilling in that area will benefit from a better (tectono) stratigraphic correlation and a better definition of the reservoir geometry in the basin. It is an innovative approximation in many settings to correctly correlate marble units without clear stratigraphic markers or fossil record, in particular, when sample material is restricted to cuttings. The most distinctive petrographical and geochemical properties in this study are colour, light transmission along with rare-earth element + yttrium (REY) geochemistry, and stable carbon and oxygen isotope data. Two stratigraphic correlations can be maintained for two different marble horizons of the GP-1 well to different stratigraphic horizons outcropping in the study area. Additional Rb-Sr geochronology yields an age of the last metamorphic overprint of the marbles of approximately 30 Ma. This study shows that a multiproxy approach is required to yield a reliable stratigraphic correlation as an important component of geothermal exploration, which supports the conceptual geological model prior to further geothermal drilling.

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“…Several compounds, containing rare earth elements, have attracted considerable attention because of their vital roles in optical imaging, sensor technology, magnetic materials, biomedicine, and so on. − Technological applications of the compounds containing rare earth elements require knowledge of their basic thermodynamic properties. Therefore, the thermodynamic properties of these compounds have been extensively investigated by researchers. − …”

Section: Introductionmentioning

confidence: 99%

Phase Equilibria in the CsBr–TbBr₃–H₂O and CsBr–TbBr₃–HBr (∼13.0 wt %)–H₂O Systems at 298.1 K and the Standard Molar Enthalpy of Formation for Cs₃TbBr₆·10H₂O

2022

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The phase equilibria of the ternary system CsBr–TbBr3–H2O and quaternary system CsBr–TbBr3–HBr (∼13.0 wt %)–H2O were studied by using the method of isothermal dissolution equilibrium at 298.1 K. The phase diagrams of the above two systems were constructed by using the experimental data. The results show that the ternary system CsBr–TbBr3–H2O consists of three crystallization regions (CsBr, Cs3TbBr6·10H2O, and TbBr3·6H2O). The phase diagram in the quaternary system CsBr–TbBr3–HBr (∼13.0 wt %)–H2O is a type of limit solid solution, and there are three crystallization fields: CsBr, solid solution Cs x TbBr(3+x)·6H2O (x = 1.25–7.00), and TbBr3·6H2O. Cs3TbBr6·10H2O is incongruently soluble in water. The experimental solubility data of terbium bromide in water at 298.1 K is 65.42 mass %. The compound Cs3TbBr6·10H2O was characterized by X-ray diffraction and thermogravimetry–derivative thermogravimetry techniques. The standard molar enthalpy of a solution of (48.25 ± 0.61) kJ/mol in water for Cs3TbBr6·10H2O was measured using microcalorimetry at 298.15 K, and its standard molar enthalpy of formation was determined as being −(5093.4 ± 1.8) kJ/mol.

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A multivariate approach at the thermodynamic properties of rare earth elements

Cited by 9 publications

References 51 publications

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Geothermal reservoir rocks of the Büyük Menderes Graben (Turkey): stratigraphic correlation by a multiproxy approach

Phase Equilibria in the CsBr–TbBr₃–H₂O and CsBr–TbBr₃–HBr (∼13.0 wt %)–H₂O Systems at 298.1 K and the Standard Molar Enthalpy of Formation for Cs₃TbBr₆·10H₂O

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A multivariate approach at the thermodynamic properties of rare earth elements

Cited by 9 publications

References 51 publications

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Rare earth elements (REEs) recovery and porous silica preparation from kaolinite

Geothermal reservoir rocks of the Büyük Menderes Graben (Turkey): stratigraphic correlation by a multiproxy approach

Phase Equilibria in the CsBr–TbBr3–H2O and CsBr–TbBr3–HBr (∼13.0 wt %)–H2O Systems at 298.1 K and the Standard Molar Enthalpy of Formation for Cs3TbBr6·10H2O

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Phase Equilibria in the CsBr–TbBr₃–H₂O and CsBr–TbBr₃–HBr (∼13.0 wt %)–H₂O Systems at 298.1 K and the Standard Molar Enthalpy of Formation for Cs₃TbBr₆·10H₂O