CN101683999A - Preparation method of nanometer cerium dioxide - Google Patents
Preparation method of nanometer cerium dioxide Download PDFInfo
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- CN101683999A CN101683999A CN200810156804A CN200810156804A CN101683999A CN 101683999 A CN101683999 A CN 101683999A CN 200810156804 A CN200810156804 A CN 200810156804A CN 200810156804 A CN200810156804 A CN 200810156804A CN 101683999 A CN101683999 A CN 101683999A
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- cerium dioxide
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Abstract
The invention discloses a preparation method of nanometer cerium dioxide, comprising the following steps: adding an appropriate amount of concentrated nitric acid in a carbonic acid bowl and stirringto obtain a nitric acid bowl solution, then adding surfactant polyethylene glycol or sodium oleate, adding a certain amount of 0.5mol/L ammonia water under the condition of continuous stirring and adjusting the pH value of the solution to be 5-6, preparing a certain concentration of ammonium bicarbonate, dripping the ammonium bicarbonate into a cerium nitrate solution, precipitating and then standing, filtering by a vacuum pump, washing in damp and hot distilled water, then adding absolute alcohol for extracting to obtain a milky white icecream-like wet thick solid, drying for 1-3 hours in a blast electrothermal box at 120 DEG C, then putting the solid in a muffle furnace and burning at the high temperature above 300 DEG C, cooling and then appropriately grinding to obtain superfine CeO2.The invention has simple process, low cost, rapid solution nucleation and easy control, and can be used for preparing high-purity products.
Description
Technical field
The present invention relates to a kind of preparation method of cerium dioxide, particularly relate to a kind of preparation method of nano ceric oxide.
Technical background
Rare earth element is described as the treasure-house of novel material because of its unique electronic configuration, after the rare earth nanoization, show numerous characteristics, as high-ratio surface effect, small-size effect, interfacial effect, transparent effect, tunnel effect, quantum effect, these effects can improve the performance and the function of material greatly.Titanium dioxide persimmon (CeO
2) be a kind of cheapness and the extremely wide rare earth material of purposes, in recent years, nano Ce O
2The preparation of material, function, characteristic and application become and press for solution.
Summary of the invention
The purpose of this invention is to provide the preparation method of nanometer cerium dioxide that a kind of technology is reasonable, production safety is reliable, reaction yield is high, production cost is low.
Technical scheme of the present invention is: take by weighing a certain amount of carbonic acid alms bowl, add an amount of red fuming nitric acid (RFNA) and stirring, obtain nitric acid alms bowl solution, add then surfactant polyethylene or enuatrol, adding a certain amount of 0.5mol/L ammoniacal liquor adjusting pH value in situation about constantly stirring is 5-6, prepare certain density bicarbonate money solution, be added drop-wise in the nitric acid decorations solution, precipitate and leave standstill after complete, use the vavuum pump suction filtration, with damp and hot distilled water washing, add again the absolute ethyl alcohol extracting, obtain the private thick solid of milky ice cream shape, dry 1-3h in 120 ℃ air blast electrocaloric effect, place Muffle furnace through the high temperature sintering more than 300 ℃, suitable grinding namely obtains ultra-fine CeO after the cooling again
2
This method technology is simple, and cost is lower, and the solution nucleation is fast, and is easy to control, can make highly purified product.
Embodiment
The precipitator method are that precipitation agent is joined in the soluble salt solution of rare earth element after the reaction, throw out thermal treatment are obtained the method for nano material.Prepared the CeO of average grain diameter less than 20nm with the hungry precipitation method of bicarbonate
2: take by weighing a certain amount of carbonic acid alms bowl, add an amount of red fuming nitric acid (RFNA) and stirring, after treating that a large amount of bubbles are overflowed, just obtain nitric acid alms bowl solution, add then surfactant polyethylene or enuatrol, adding a certain amount of 0.5mol/L ammoniacal liquor in situation about constantly stirring, to regulate the pH value be 5-6, and the solution of gained is placed constant temperature water bath; Prepare certain density bicarbonate money solution, be added drop-wise in the nitric acid decorations solution; With electric mixer precipitation system is constantly stirred, precipitate and leave standstill after complete, use the vavuum pump suction filtration, with damp and hot distilled water washing, add again the absolute ethyl alcohol extracting, obtain the private thick solid of milky ice cream shape, dry 1-3h in 120 ℃ air blast electrocaloric effect, place Muffle furnace through the high temperature sintering more than 300 ℃, suitable grinding namely obtains ultra-fine CeO after the cooling again
2
This method technology is simple, and cost is lower, and the solution nucleation is fast, and is easy to control, can make highly purified product.CeO
2Nanoparticle has wide absorption band in the 300-450nm scope, and along with particle diameter reduces, the absorption band red shift, UV-light there are good absorptive character, can be used for preparing the uv-absorbing material, as be used for absorbing the 135nm short wave ultraviolet of fluorescent tube bulb, to improve lamp tube service life, also be used for sunblock lotion and makeup.Plastics are easily aging becoming fragile under action of ultraviolet radiation, coats on its surface and contain CeO
2The coating of nanoparticle can prevent ageing of plastics.All need coat resin and rubber-like paint on the surfaces such as tank, automobile, naval vessel, oil storage tank, and these paint also easy aging becoming fragile under solar radiation, with nano Ce O
2Adding is wherein made antiultraviolet coating and is played a role.Plate one deck nano Ce O at glass surface
2Also can receive same effect.For improving the weathering resistance of polyvinyl chloride (PVC) building materials, in vinyl chloride resin, add UV light absorber such as benzophenone, benzo a mile, but because its volatile and rotten deterioration under the light and heat effect is difficult to make the PvC building materials to keep high-weatherability for a long time; And the UV light absorber of deterioration can be damaged the transparency of PVC building materials.If add nano Ce O
2Or replace ultra-violet absorber with it, and can increase substantially the weatherability of PvC building materials, make it keep good mechanical strength and the transparency for a long time.
Claims (6)
1, a kind of preparation method of nanometer cerium dioxide is characterized in that: the carbonic acid alms bowl adds an amount of red fuming nitric acid (RFNA) and stirring.
2, a kind of preparation method of nanometer cerium dioxide according to claim 1 is characterized in that: add surfactant polyethylene or enuatrol, adding a certain amount of 0.5mol/L ammoniacal liquor adjusting pH value in situation about constantly stirring is 5-6.
3, a kind of preparation method of nanometer cerium dioxide according to claim 1 is characterized in that: with hydrogen-carbonate money solution, be added drop-wise in the nitric acid decorations solution, leave standstill after precipitation finishes, use the vacuum pump suction filtration.
4, a kind of preparation method of nanometer cerium dioxide according to claim 1 is characterized in that: with damp and hot distilled water wash, add the dehydrated alcohol extracting again, obtain the private thick solid of oyster white ice cream shape.
5, a kind of preparation method of nanometer cerium dioxide according to claim 1 is characterized in that: dry 1-3h in 120 ℃ air blast heater case places retort furnace through the high temperature sintering more than 300 ℃ again.
6, a kind of preparation method of nanometer cerium dioxide according to claim 1 is characterized in that: suitable grinding namely obtains ultra-fine CeO after the cooling
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810156804A CN101683999A (en) | 2008-09-26 | 2008-09-26 | Preparation method of nanometer cerium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810156804A CN101683999A (en) | 2008-09-26 | 2008-09-26 | Preparation method of nanometer cerium dioxide |
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| CN101683999A true CN101683999A (en) | 2010-03-31 |
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| CN200810156804A Pending CN101683999A (en) | 2008-09-26 | 2008-09-26 | Preparation method of nanometer cerium dioxide |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891233A (en) * | 2010-07-12 | 2010-11-24 | 南昌大学 | Method for preparing superfine cerium oxide |
| CN104812375A (en) * | 2012-06-13 | 2015-07-29 | 丝润有限责任公司 | Nanoceria for the treatment of oxidative stress |
| TWI504568B (en) * | 2010-08-12 | 2015-10-21 | Daito Kasei Kogyo Co Ltd | A petaloid cerium oxide powder, a method for producing the same, and a cosmetic |
| CN105668605A (en) * | 2016-01-09 | 2016-06-15 | 青岛科技大学 | Preparation method of nest-like mesoporous cerium oxide with high specific surface area |
| CN112919523A (en) * | 2021-03-16 | 2021-06-08 | 厦门稀土材料研究所 | Preparation method of hexagonal flaky rare earth cerium oxide |
| CN115895595A (en) * | 2021-08-30 | 2023-04-04 | 凯斯科技股份有限公司 | Cerium oxide polishing particles and polishing slurry composition |
-
2008
- 2008-09-26 CN CN200810156804A patent/CN101683999A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891233A (en) * | 2010-07-12 | 2010-11-24 | 南昌大学 | Method for preparing superfine cerium oxide |
| TWI504568B (en) * | 2010-08-12 | 2015-10-21 | Daito Kasei Kogyo Co Ltd | A petaloid cerium oxide powder, a method for producing the same, and a cosmetic |
| CN104812375A (en) * | 2012-06-13 | 2015-07-29 | 丝润有限责任公司 | Nanoceria for the treatment of oxidative stress |
| US9533007B2 (en) | 2012-06-13 | 2017-01-03 | Cerion, Llc | Nanoceria for the treatment of oxidative stress |
| CN104812375B (en) * | 2012-06-13 | 2017-08-22 | 丝润有限责任公司 | Nano ceric oxide for treating oxidative stress |
| US9962406B2 (en) | 2012-06-13 | 2018-05-08 | Cerion, Llc | Nanoceria for the treatment of oxidative stress |
| US10729717B2 (en) | 2012-06-13 | 2020-08-04 | Cerion Enterprises Llc | Nanoceria for neutralizing free radicals |
| CN105668605A (en) * | 2016-01-09 | 2016-06-15 | 青岛科技大学 | Preparation method of nest-like mesoporous cerium oxide with high specific surface area |
| CN105668605B (en) * | 2016-01-09 | 2017-06-20 | 青岛科技大学 | A kind of nest like has the preparation method of high specific surface area and mesoporous ceria |
| CN112919523A (en) * | 2021-03-16 | 2021-06-08 | 厦门稀土材料研究所 | Preparation method of hexagonal flaky rare earth cerium oxide |
| CN112919523B (en) * | 2021-03-16 | 2022-01-28 | 厦门稀土材料研究所 | Preparation method of hexagonal flaky rare earth cerium oxide |
| CN115895595A (en) * | 2021-08-30 | 2023-04-04 | 凯斯科技股份有限公司 | Cerium oxide polishing particles and polishing slurry composition |
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Open date: 20100331 |