http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102951669-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8eaf0e75177d288022d3cbabcc3ceada |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B82Y30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-00 |
| filingDate | 2012-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1dd5b56c8345a152d034a1ddfdd8dce3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_883c89bd728c3cbce3b36c9f81bf9f37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7ff06b1181934fb8369432178b1e737a |
| publicationDate | 2015-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102951669-B |
| titleOfInvention | Method for preparing CeO2 nano solid spheres by microwave-assisted urea hydrolysis |
| abstract | The invention relates to a method for preparing CeO2 nano solid spheres by microwave-assisted urea hydrolysis, which comprises the following steps of: dissolving Ce(NO3) 3.6H2O into deionized water to obtain Ce(NO3)3 solution; adding urea, PVP (polyvinyl pyrrolidone) and KBrO3 into the Ce(NO3)3 solution, and continuously and uniformly mixing to obtain mixed solution; moving the mixed solution into a reaction kettle, and placing the reaction kettle into a microwave hydrothermograph for reaction for 0.5-1.5h at the temperature of 160-190 DEG C; and centrifugal washing after reaction, and drying to obtain the CeO2 nano solid spheres. According to the invention, the Ce(NO3) 3-6H2O, the urea, the KBrO3 and the PVP are used as the raw materials, the microwave hydrothermal method and the urea hydrolysis principle are used for further synthesizing solid sphere-shaped CeO2 nano powder, and then, the CeO2 nano solid spheres of which the mean diameter is about 300nm can be obtained. The method disclosed by the invention has the specific advantages that the raw materials are relatively low in price, the process is simple in operation, and the microwave hydrothermal method which is pollution-free, clean and low-consumption is adopted for quickly preparing the CeO2 nano solid spheres under the condition of the urea hydrolysis. |
| priorityDate | 2012-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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