Preparation method of sheet-shaped nano-grade cerium oxide

A nano-cerium oxide and flaky technology, which is applied in the field of preparation of rare earth materials, can solve the problems of inconvenient industrial scale-up production, low output of two-dimensional flaky nano-cerium oxide, etc., and achieve easy production, simple post-processing, and simple preparation process Effect
CN102992376AInactive Publication Date: 2013-03-27EAST CHINA UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
EAST CHINA UNIV OF SCI & TECH
Publication Date
2013-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of sheet-shaped nano-grade cerium oxide. According to the invention, cerium acetate or cerium formate is dispersed into anhydrous methanol, wherein a molar concentration is 0.1-0.5mol / L; benzyl alcohol or benzylamine with a same molar amount of that of cerium salt is uniformly dispersed in the solution; the mixture is delivered into an autoclave; crystallization is carried out for 24-72h under a temperature of 180 DEG C; cooling, filtering, and roasting are carried out, such that sheet-shaped nano-grade cerium oxide is obtained. The preparation method and post-treatment method are simple, and a yield is high. With the method, industrialized large-scale production is easy to realize.
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Description

technical field

[0001] The invention relates to a preparation method of a rare earth material, in particular to a method for synthesizing sheet-shaped nano-cerium oxide by a solvothermal method. Background technique

[0002] Cerium oxide has a flexible redox couple (Ce 3+ / C 4+ ), oxygen storage and release capacity, and its strong absorption of ultraviolet rays, are widely used in gas sensors, optical materials, three-way catalysts and other fields; researchers have conducted in-depth research on cerium oxide nanomaterials, and prepared nano cerium oxide There are also many methods, such as high-temperature calcination, hydrothermal synthesis, solution precipitation, sol-gel method, microemulsion method, organic cerium salt thermal decomposition method, etc.; in recent years, researchers have found that cerium oxide with different shapes have different physical and chemical properties.

[0003] Although there are many reports about the preparation of specific morphology ...

Claims

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