Solubility products of the rare-earth carbonates

1986 ◽  
Vol 31 (1) ◽  
pp. 40-42 ◽  
Author(s):  
F. Henry Firsching ◽  
Javad Mohammadzadei
Keyword(s):  
Rare Earth ◽  
Solubility Products ◽  
Rare Earth Carbonates ◽  
The Rare Earth

Study on the calcination experiments of rare earth carbonates using microwave heating

2015 ◽  
Vol 4 (4) ◽  
Author(s):  
Guo Lin ◽  
Libo Zhang ◽  
Shaohua Yin ◽  
Jinhui Peng ◽  
Shiwei Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Microwave Heating ◽  
Rare Earth Oxides ◽  
Particle Analysis ◽  
Scanning Calorimetry ◽  
Vibration Absorption ◽  
Ft Ir ◽  
Average Size ◽  
Rare Earth Carbonates ◽  
The Rare Earth

AbstractThe heating behavior and effect of experimental parameters like holding time, calcination temperature and microwave power on the weight loss of the mixed rare earth carbonate using microwave heating have been studied, also characterized by X-ray diffraction, thermogravimetry-differential scanning calorimetry, scanning electron microscopy (SEM), particle analysis and Fourier transform infrared (FT-IR). The results show the following: rare earth oxides are obtained at 850°C for holding 1 h; FT-IR analysis indicates that the vibration absorption peak of carbonate disappears after calcination using microwave, confirming the feasibility of microwave calcination for the rare earth carbonates; SEM shows that the rare earth oxides have the characteristics of better and finer particles, have better dispersion and have surface that is more loose and porous than that of products using conventional calcination; particle analysis indicates that average size (D

Solubility products of the rare-earth 8-quinolinates

1981 ◽  
Vol 26 (2) ◽  
pp. 116-118
Author(s):  
F. Henry Firsching ◽  
Robert C. Cuca
Keyword(s):  
Rare Earth ◽  
Solubility Products ◽  
The Rare Earth

scholarly journals New Insights in the Hydrothermal Synthesis of Rare-Earth Carbonates

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2062 ◽  
Author(s):  
Luca Spiridigliozzi ◽  
Claudio Ferone ◽  
Raffaele Cioffi ◽  
Mauro Bortolotti ◽  
Gianfranco Dell’Agli
Keyword(s):  
Rare Earth ◽  
Hydrothermal Synthesis ◽  
Raw Materials ◽  
Type Structure ◽  
Chemical Formula ◽  
Intrinsic Properties ◽  
Metal Nitrates ◽  
Rare Earth Carbonates ◽  
The Rare Earth

The rare-earth carbonates represent a class of materials with great research interest owing to their intrinsic properties and because they can be used as template materials for the formation of other rare earth phases, particularly of rare-earth oxides. However, most of the literature is focused on the synthesis and characterization of hydroxycarbonates. Conversely, in the present study we have synthesized both rare-earth carbonates—with the chemical formula RE2(CO3)3·2-3H2O, in which RE represents a generic rare-earth element, and a tengerite-type structure with a peculiar morphology—and rare-earth hydroxycarbonates with the chemical formula RECO3OH, by hydrothermal treatment at low temperature (120 °C), using metal nitrates and ammonium carbonates as raw materials, and without using any additive or template. We found that the nature of the rare-earth used plays a crucial role in relation to the formed phases, as predicted by the contraction law of lanthanides. In particular, the hydrothermal synthesis of rare-earth carbonates with a tengerite-type structure was obtained for the lanthanides from neodymium to erbium. A possible explanation of the different behaviors of lighter and heavier rare-earths is given.

Flame spectra of the rare-earth elements*

1962 ◽  
Vol 18 (4) ◽  
pp. 1127-1153
Author(s):  
V FASSEL ◽  
R CURRY ◽  
R KNISELEY
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
The Rare Earth

Physico-chemical properties of the rare-earth metals, scandium, and yttrium

1963 ◽  
Vol 79 (2) ◽  
pp. 263-293 ◽  
Author(s):  
E.M. Savitskii ◽  
V.F. Terekhova ◽  
O.P. Naumkin
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Chemical Properties ◽  
Physico Chemical ◽  
The Rare Earth

DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION

2018 ◽  
Vol 17 (8) ◽  
pp. 2001-2009
Author(s):  
Tatjana Juzsakova ◽  
Akos Redey ◽  
Le Phuoc Cuong ◽  
Zsofia Kovacs ◽  
Tamas Frater ◽  
...  
Keyword(s):  
Rare Earth ◽  
Red Mud ◽  
Rare Earth Metals ◽  
The Rare Earth
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