Method of preparing metal containing compounds using hydrodynamic cavitation
First Claim
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1. A process for the preparation of nanostructured materials in high phase purities comprising:
- a) mixing a metal containing solution with a precipitating agent to form a mixed solution that precipitates a product;
b) passing the mixed solution at elevated pressure into a cavitation chamber to create cavitation thereby forming a cavitated precipitated product, said cavitation chamber includes;
i) means for creating a cavitation zone, and ii) means for controlling said cavitation zone by providing adjustable back pressure within said cavitation zone;
c) removing the cavitated precipitated product and the mixed solution from the cavitation chamber; and
d) separating the cavitated precipitated product from the mixed solution.
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Abstract
A process for the preparation of nanostructured materials in high phase purities using cavitation is disclosed. The method comprises mixing a metal containing solution with a precipitating agent and passing the mixture into a cavitation chamber. The chamber consists of a first element to produce cavitation bubbles, and a second element that creates a pressure zone sufficient to collapse the bubbles. The process is useful for the preparation of mixed metal oxide catalysts and materials for piezoelectrics and superconductors.
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Citations
23 Claims
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1. A process for the preparation of nanostructured materials in high phase purities comprising:
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a) mixing a metal containing solution with a precipitating agent to form a mixed solution that precipitates a product;
b) passing the mixed solution at elevated pressure into a cavitation chamber to create cavitation thereby forming a cavitated precipitated product, said cavitation chamber includes;
i) means for creating a cavitation zone, and ii) means for controlling said cavitation zone by providing adjustable back pressure within said cavitation zone;
c) removing the cavitated precipitated product and the mixed solution from the cavitation chamber; and
d) separating the cavitated precipitated product from the mixed solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for the preparation of nanostructured materials in high phase purities comprising:
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a) mixing a metal containing solution with a precipitating agent to form a mixed solution that precipitates a product;
b) passing the mixed solution at elevated pressure and at a velocity into a cavitation chamber to create cavitation thereby forming a cavitated precipitated product, said cavitation chamber includes;
i) means for creating a cavitation zone, and ii) means for controlling said cavitation zone by providing back pressure within said cavitation zone;
c) removing the cavitated precipitated product and the mixed solution from the cavitation chamber; and
d) separating the cavitated precipitated product from the mixed solution. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification