Application examples of hydrated yttrium carbonate_Industrial additives

Background and overview of application examples of hydrated yttrium carbonate

Hydrated yttrium carbonate hydrolyzes into basic carbonate in hot water, and forms a double salt with excess carbonate when left alone. Hydrated yttrium carbonate is slightly soluble in carbon dioxide aqueous solution, insoluble in ethanol and ether, soluble in dilute strong acid solution to form the corresponding yttrium salt, and soluble in alkali metal carbonate solution to form a double salt. Hydrated yttrium carbonate decomposes when heated and is first converted into a basic salt, and then generates yttrium oxide when burned. Hydrated yttrium carbonate is produced by the reaction of yttrium salt and cold solution of alkali metal carbonate.

Application examples of hydrated yttrium carbonate

Application examples of hydrated yttrium carbonate Application 1,

CN201810419291.6 provides a method for preparing TiO₂/rare earth/HY molecular sieve photocatalytic materials. Mix ethyl titanate and absolute ethanol, stir continuously, and cerium oxalate is mixed during stirring. , neodymium nitrate and hydrated yttrium carbonate are added dropwise. After the dropwise addition is completed, increase the temperature to 70-90°C and continue stirring for 30-50min; then add 2-5 drops of glacial acetic acid to obtain an impregnation solution; add HY molecular sieve in Roast for 30-40 minutes at a temperature of 180-220°C and set aside; add the pretreated HY molecular sieve to the impregnation liquid, the solid-liquid ratio of the two is 1:20-40; raise the temperature to 150-180 at a rate of 2-5°C/min ℃, stir the reaction at a speed of 500-700r/min for 1-2h; then raise the temperature to 220-260℃ at a speed of 1-3℃/min, and impregnate the reaction for 1-2h. After the reaction is cooled, wash with distilled water and roast Photocatalytic materials are obtained.

Application examples of hydrated yttrium carbonate Application 2.

CN201610809509.X provides a preparation method of quartz glass and quartz glass. The main purpose is to improve the corrosion resistance of quartz glass finished products in a hydrofluoric acid environment. Preparation methods, including:

The first doping compound and the second doping compound are dissolved and mixed with a dissolving agent to form a doping mixed solution. The first doping compound is an aluminum-containing compound, and the second doping compound is an aluminum-containing compound. The hetero compounds include at least one of Zr-containing compounds, Y-containing compounds, La-containing compounds, Sc-containing compounds, Th-containing compounds, V-containing compounds, and Ti-containing compounds;

After mixing the doping mixed solution with volume parts L1 and tetrahydrofuranthiol water with volume parts L2, the doped silica gel is obtained by reacting with silicon tetrachloride liquid phase;

The doped silica gel is fired into a finished quartz glass product through a firing process, wherein the finished quartz glass product contains the first part of the doped mixed solution converted by firing. Al2O3, ZrO₂, Y₂O₃, La₂O₃, Sc₂O₃, ThO₂, V2O₅ and TiO₂.

The Y-containing compound includes yttrium oxalate Y₂(C₂O₄)₃·10H ₂O, yttrium nitrate Y (NO₃)₃·6H₂O, hydrated yttrium carbonate Y₂(CO₃)₃·3H₂O, yttrium chloride hexahydrate YCl₃·At least one of 6H₂O and hydrated yttrium chloride YCl₃H₂O.

References

[1]CN201810419291.6 Preparation method of TiO2/rare earth/HY molecular sieve photocatalytic material

[2][China invention, China invention authorization] CN201610809509.X Preparation method of quartz glass and quartz glass

[3] Dictionary of Chemical Substances