Volatile Single-Source Precursors for the Low-Temperature Preparation of Sodium–Rare Earth Metal Fluorides

2016 ◽  
Vol 138 (28) ◽  
pp. 8883-8887 ◽  
Author(s):  
Matthew C. Barry ◽  
Zheng Wei ◽  
Tianyu He ◽  
Alexander S. Filatov ◽  
Evgeny V. Dikarev
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Single Source ◽  
Single Source Precursors ◽  
Metal Fluorides ◽  
Low Temperature Preparation ◽  
Temperature Preparation

ChemInform Abstract: Nanosized Rare-Earth Hexaborides: Low-Temperature Preparation and Microstructural Analysis.

ChemInform ◽  
2013 ◽  
Vol 44 (37) ◽  
pp. no-no
Author(s):  
Alessia Aprea ◽  
Angelo Maspero ◽  
Norberto Masciocchi ◽  
Antonietta Guagliardi ◽  
Alessandro Figini Albisetti ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Microstructural Analysis ◽  
Low Temperature Preparation ◽  
Temperature Preparation

Die Selten-Erd-Metall(III)-Fluorid-Oxoselenate(IV) MF[SeO3] (M = Y, Ho–Lu) imYF[SeO3]-Typ/ The Rare-Earth Metal(III) Fluoride Oxoselenates(IV) MF[SeO3] (M = Y, Ho–Lu) with YF[SeO3]-type Structure

2009 ◽  
Vol 64 (4) ◽  
pp. 375-382 ◽  
Author(s):  
Christian Lipp ◽  
Thomas Schleid
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Rare Earth Metal ◽  
Room Temperature ◽  
Earth Metal ◽  
Selenium Dioxide ◽  
Molar Ratios ◽  
Triclinic Structure ◽  
Fluxing Agent ◽  
The Rare Earth

YF[SeO3]-type rare-earth metal(III) fluoride oxoselenates(IV) MF[SeO3] (M = Y, Ho-Lu) crystallize monoclinically in space group P21/c (no. 14) with Z = 4. Obeying the lanthanoid contraction, the lattice parameters decrease successively from a = 657.65(7), b = 689.71(7), c = 717.28(7) pm and β = 99.036(5)° for YF[SeO3] at 298 K to a = 648.39(6), b = 681.28(7), c = 705.81(7) pm and β = 98.657(5)° for LuF[SeO3] at 100 K (LT-LuF[SeO3], LT ≡ Low Temperature). The M3+ cations are occupying the general site 4e. Contrary to the triclinic structure of RT-LuF[SeO3] (RT ≡ Room Temperature; CN(Lu3+) = 7) the higher coordination number eight is achieved for the M3+ cations in all YF[SeO3]-type compounds. This results in [MO6F2]11− polyhedra (d(M-O) = 228 - 243/225 - 239 plus 263/258 pm, d(M-F) = 219/216 pm, M = Y/Lu), which are connected via common O・ ・ ・O edges to form infinite chains 1∞{[MOe 4/2Ot 2/1Ft 2/1]7−} (e ≡ edge-sharing, t ≡ terminal) running along [010]. Neighboring chains share common O3・ ・ ・O3 and O3・ ・ ・F edges generating 2∞{[M(O3)3/3(O2)2/2(O1)1/1F2/2]4−} sheets parallel to the (100) plane. Finally, these 2 ∞{[MO3F]4−} sheets are interconnected by Se4+ cations, which appear in isolated ψ1-tetrahedral [SeO3]2− anions (d(Se-O) = 167 - 175 pm). For the synthesis of the YF[SeO3]-type rare-earth metal(III) fluoride oxoselenates( IV) MF[SeO3] (M = Y, Ho-Lu), the rare-earth metal sesquioxides (M2O3) and trifluorides (MF3), and selenium dioxide (SeO2) in molar ratios of 1 : 1 : 3 with the fluxing agent CsBr were reacted within five days at 700 - 750 °C in evacuated graphitized silica ampoules.

Transition and rare earth metal fluorides as thermal sources of atomic and molecular fluorine

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-109-Pr3-113 ◽  
Author(s):  
J. V. Rau ◽  
N. S. Chilingarov ◽  
M. S. Leskiv ◽  
V. F. Sukhoverkhov ◽  
V. Rossi Albertini ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Metal Fluorides ◽  
Thermal Sources

scholarly journals Mild hydrothermally treated brewer's spent grain for efficient removal of uranyl and rare earth metal ions

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 45116-45129
Author(s):  
Yi Su ◽  
Wendelin Böhm ◽  
Marco Wenzel ◽  
Silvia Paasch ◽  
Margret Acker ◽  
...  
Keyword(s):  
Rare Earth ◽  
Energy Consumption ◽  
Low Temperature ◽  
Environmental Impact ◽  
Hydrothermal Treatment ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Efficient Removal ◽  
Brewer’S Spent Grain ◽  
Spent Grain

Effective biosorbent ABSG is obtained via hydrothermal treatment of BSG at low temperature without activation, minimizing energy consumption and environmental impact.

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