scholarly journals A comparison of methods for the estimation of the enthalpy of formation of rare earth compounds

2021 ◽  
Author(s):  
Sergio Sanchez-Segado ◽  
Sebastien Lectez ◽  
Animesh Jha ◽  
Stephen Stackhouse
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Enthalpy Of Formation ◽  
Comparison Of Methods ◽  
Rare Earth Compounds ◽  
The Enthalpy Of Formation ◽  
Global Transition ◽  
The Way

Rare earth elements are helping drive the global transition towards a greener economy. However, the way in which they are produced is far from being considered green. One of the...

On the way to ‘zero waste’ management: Recovery potential of elements, including rare earth elements, from fine fraction of waste

2018 ◽  
Vol 186 ◽  
pp. 81-90 ◽  
Author(s):  
Juris Burlakovs ◽  
Yahya Jani ◽  
Mait Kriipsalu ◽  
Zane Vincevica-Gaile ◽  
Fabio Kaczala ◽  
...  
Keyword(s):  
Rare Earth ◽  
Waste Management ◽  
Rare Earth Elements ◽  
Fine Fraction ◽  
Zero Waste ◽  
Recovery Potential ◽  
The Way

scholarly journals Highly sensitive determination of trace rare-earth elements in ultra pure rare-earth compounds by combining ICP-MS with HPLC and electrothermal vaporization.

2000 ◽  
Vol 49 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Haizhou WU ◽  
Noriyuki WATANABE ◽  
Ryoichi TSUKAHARA ◽  
Takao ITOH ◽  
Yohichi GOHSHI ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Rare Earth Compounds ◽  
Electrothermal Vaporization ◽  
Icp Ms ◽  
Highly Sensitive ◽  
Sensitive Determination

Comparison of methods for the geochemical determination of rare earth elements: Rock Canyon Creek REE–F–Ba deposit case study, SE British Columbia, Canada

2019 ◽  
Vol 19 (4) ◽  
pp. 414-430 ◽  
Author(s):  
Carlee Akam ◽  
George J. Simandl ◽  
Ray Lett ◽  
Suzanne Paradis ◽  
Mihoko Hoshino ◽  
...  
Keyword(s):  
British Columbia ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Comparison Of Methods

scholarly journals Comments on intermetallic thermochemistry

2002 ◽  
Vol 38 (3-4) ◽  
pp. 249-272 ◽  
Author(s):  
G. Borzone ◽  
R. Raggio ◽  
R. Ferro
Keyword(s):  
Rare Earth ◽  
Enthalpy Of Formation ◽  
Rare Earth Alloys ◽  
Alloy Thermodynamics ◽  
The Enthalpy Of Formation ◽  
The Eu

The need of a concerted multi-disciplinary approach in the investigation of intermetallic systems and the role of thermochemistry are underlined. The activity carried out in the Author?s laboratory in the alloy thermodynamics is summarized. The different instruments (calorimeters) built in laboratory are briefly presented and their performance discussed. The results obtained in the measurement of the enthalpy of formation mainly of several rare earth alloys are described. The characteristics of the Eu and Yb thermochemistry and crystallochemistry are finally underlined.

SUPERCONDUCTORS WITH HIGH ZERO-RESISTANCE TEMPERATURE IN Ln-Ba-Cu-O SYSTEM (Ln=Gd, Dy, Ho, Er, Tm, Yb, and Lu)

1987 ◽  
Vol 01 (02) ◽  
pp. 199-203 ◽  
Author(s):  
Yuzhen Huang ◽  
Genhua Chen ◽  
Liquan Chen ◽  
Zhenhong Mai ◽  
Xi Chu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Preparation Procedure ◽  
Nominal Composition ◽  
Rare Earth Compounds ◽  
Heavy Rare Earth ◽  
Heavy Rare Earth Elements ◽  
Zero Resistance

The new superconductors with zero-resistance temperature around 90K in Ln-Ba-Cu-O system (Ln=Heavy rare earth elements with the exception of Tb) have been synthesised. It has been shown that the nominal composition and preparation procedure for various heavy rare earth compounds are different from each other.

Enthalpy of Formation of Rare-earth Silicates Y2SiO5 and Yb2SiO5 and N-containing Silicate Y10(SiO4)6N2

1999 ◽  
Vol 14 (4) ◽  
pp. 1181-1185 ◽  
Author(s):  
Jian-Jie Liang ◽  
Alexandra Navrotsky ◽  
Thomas Ludwig ◽  
Hans J. Seifert ◽  
Fritz Aldinger
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Enthalpy Of Formation ◽  
Temperature Drop ◽  
Solution Calorimetry ◽  
Enthalpies Of Formation ◽  
Binary Oxides ◽  
Standard Enthalpies Of Formation ◽  
Oxygen Gas ◽  
The Enthalpy Of Formation

The enthalpies of formation of two rare-earth silicates (Y2SiO5 and Yb2SiO5) and a N-containing rare-earth silicate Y10(SiO4)6N2 have been determined using high-temperature drop solution calorimetry. Alkali borate (52 wt% LiBO2·48 wt% NaBO2) solvent was used at 800 °C, and oxygen gas was bubbled through the melt. The nitrogen-containing silicate was oxidized during dissolution. The standard enthalpies of formation are for Y2SiO5, Yb2SiO5, and Y10(SiO4)6N2, respectively, –22868.54 ± 5.34, –22774.75 ± 8.21, and –14145.20 ± 16.48 kJ/mol from elements, and –52.53 ± 4.83, –49.45 6 ± 8.35, and –94.53 ± 11.66 kJ/mol from oxides (Y2O3 or Yb2O3, SiO2) and nitride (Si3N4). The silicates and N-containing silicate are energetically stable with respect to binary oxides and Si3N4, but the N-containing silicate may be metastable with respect to assemblages containing Y2SiO5, Si3N4, and SiO2. A linear relationship was found between the enthalpy of formation of a series of M2SiO5 silicates from binary oxides and the ionic potential (z/r) of the metal cation.

Sign in / Sign up

Export Citation Format

Share Document