Method for preparing large size beta-type ammonium tetramolybdate monocrystal particle
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United States of America Patent
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-
Jan 2, 2024
Grant Date -
Dec 22, 2022
app pub date -
Jun 7, 2022
filing date -
Jun 9, 2021
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for preparing large size beta-type ammonium tetramolybdate monocrystal particle includes industrial ammonium molybdate, ammonia, de-ionized water are used to prepare ammonium molybdate solution with concentration of 0.2˜0.6 g/ml; pH is adjusted to 5˜7, temperature is adjusted to the first temperature of 70˜90° C. to obtain the first ammonium molybdate solution; beta-type ammonium tetramolybdate crystal seed is put into crystallization container, and the first ammonium molybdate solution is poured in the crystallization container, to form crystallization system; the crystallization system stands still at room temperature, naturally cooling, the beta-type ammonium tetramolybdate crystal seed grows into large size beta-type ammonium tetramolybdate monocrystal particle. A beta-type ammonium tetramolybdate crystal seed is obtained by constant-temperature crystallization at 70˜90° C. The obtained beta-type ammonium tetramolybdate crystal seed is put stewing in the first ammonium molybdate solution and is naturally cooling to produce large size beta-type ammonium tetramolybdate monocrystal particle forms.
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International Classification(s)
- 2022 Application Filing Year
- C30B Class
- 502 Applications Filed
- 148 Patents Issued To-Date
- 29.49 % Issued To-Date
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- C30B Class
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