Gadolinia
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Gadolinia
structure -
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CAS No:
12064-62-9
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Formula:
Gd2O3
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Chemical Name:
Gadolinia
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Synonyms:
Gadolinium oxide (Gd2O3);Gadolinia;Gadolinium sesquioxide;Digadolinium trioxide;Gadolinium oxide;Gadolinium(3+) oxide;Gadolinium trioxide;Gadolinium(III) oxide;Gadolinium oxide (GdO1.5);477602-54-3;1431942-45-8
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CAS No:
Characteristics
3
-0.30600
White nanopowder
7.407
2330 °C(lit.)
H2O: insoluble
Storage temperature: no restrictions.
Safety Information
NONH for all modes of transport
1
36
39-26
LW4790000
Xi
Stable at room temperature in closed containers under normal storage and handling conditions. Absorbs carbon dioxide from the air.
P305 + P351 + P338
H319
Gadolinia Use and Manufacturing
The rare earth chloride solution obtained from monazite or mixed rare earth ore is extracted by extraction method with P2O4-kerosene-HC1-R system. First, neodymium and samarium are grouped, and the raffinate is used to further lighten rare earths, and extract samarium and heavy rare earths. Into the organic phase, and then use 2.0 mol/L HCl to strip the medium and heavy rare earths to obtain the samarium-gadolinium enrichment. After the zinc powder is reduced and the europium is extracted by the alkalinity method, the mixed rare earth grouping method is used to remove the The mixed rare earth is dissolved, precipitated with oxalic acid, separated, dried and burned to obtain gadolinium oxide. Gd2(C2O4)3→Gd2O3+3CO2+3CO
Used as a material for neutron absorption in atomic reactors, and as a phosphor and magnetic material additives
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