CN108285168A - Evengranular hexagon flake cerium carbonate particle and preparation method thereof - Google Patents
Evengranular hexagon flake cerium carbonate particle and preparation method thereof Download PDFInfo
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- CN108285168A CN108285168A CN201810410728.XA CN201810410728A CN108285168A CN 108285168 A CN108285168 A CN 108285168A CN 201810410728 A CN201810410728 A CN 201810410728A CN 108285168 A CN108285168 A CN 108285168A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/247—Carbonates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
- C01P2004/22—Particle morphology extending in two dimensions, e.g. plate-like with a polygonal circumferential shape
Abstract
The present invention relates to a kind of evengranular hexagon flake cerium carbonate particles and preparation method thereof.Regulate and control carbonate synthesis cerium using water-soluble amide family macromolecule surfactant template, simulate the liquid-phase precipitation system of biomineralization environment, using weak cation surfactant polyvinylpyrrolidone as template, be prepared particle size uniformity, pattern rule hexagon flake cerium carbonate particle.Specifically, utilize the trend that electronics is provided on the polar group lactams and oxygen atom oriented pyrrolidone ring in polyvinylpyrrolidonemolecules molecules with hydrophilic interaction, it is acted on by electron adsorption and space constraint, control nucleation process and crystal growth so that the size of carbonic acid cerium crystal, pattern are controlled and adjusted.In addition, low in raw material price of the present invention, method and apparatus are simple and convenient to operate, industrialized production is easily realized, and the cerous carbonate particle being prepared and the cerium oxide particles obtained after calcination significantly increase ultraviolet absorption ability, can be used in cosmetic industry.
Description
Technical field
The present invention relates to technical field of powdered material preparation, and in particular to a kind of evengranular hexagon flake cerium carbonate
Particle and preparation method thereof.
Background technology
Baotou rare earth is resourceful, and the characteristics of Baotou rare earth resource is occupied an leading position with light rare earth, and wherein cerium contains
Amount accounts for 50%, therefore it is particularly important to develop cerium resources advantage.There is Ce elements unique 4f electronic structures, compound to have spy
The physical characteristics such as different magnetic, light, electricity.Cerium oxide has the property of N-type semiconductor, has unique electronic structure, shows excellent
Oxygen storage capacity and charge-exchange ability, be widely used in three-way catalyst, fuel cell, photocatalysis, pollutant treatment,
There is huge development potentiality in the fields such as glass polishing agent and electronic ceramics in modern high technology field.Synthesize form, size and
Structure is by the important research direction that the inorganic material of artificial adjustment is modern material science.The method of biomineralization is drawn
Enter into materials synthesis, is expected to realize under the regulation and control of all kinds of organic additives and template to the effective of inorganic matter pattern and structure
It adjusts, prepares the material with unique microstructure and performance.
Currently, various patterns and the cerium oxide of performance studies have reported that, such as cerium oxide pore size material, self assembly material
Material, functional material, nanotube, nanometer rods etc..Although there are many method for preparing cerium oxide, given birth to but without suitable large-scale industry
The method of production, and the research of the controlled cerium oxide of pattern mostly uses hydro-thermal method, utilizes weak cation surfactant polyethylene
Pyrrolidones has not been reported as template, the method for synthesis hexagon flake cerium carbonate.
Invention content
For the defects in the prior art, present invention aims at provide a kind of evengranular hexagon flake cerium carbonate
Particle and preparation method thereof.The present invention utilizes water-soluble amide family macromolecule surfactant template to regulate and control carbonate synthesis cerium for the first time
Method, simulate biomineralization environment liquid-phase precipitation system, using weak cation surfactant polyvinylpyrrolidone as
Template, be prepared particle size uniformity, pattern rule hexagon flake cerium carbonate particle.Specifically, polyethylene is utilized
Electronics is provided on polar group lactams and the oriented pyrrolidone ring of oxygen atom in pyrrolidone molecule with hydrophilic interaction
Trend controls nucleation process and crystal growth by the effect of electron adsorption and space constraint so that carbonic acid cerium crystal it is big
Small, pattern is controlled and is adjusted.In addition, low in raw material price of the present invention, method and apparatus are simple and convenient to operate, easily realize
Industrialized production, and the cerous carbonate particle being prepared and the cerium oxide particles obtained after calcination are aobvious to ultraviolet absorption ability
Enhancing is write, can be used in cosmetic industry.
To achieve the above object, technical solution provided by the invention is：
In a first aspect, the present invention provides a kind of preparation method of hexagon flake cerium carbonate particle, include the following steps：
S1：Cerium solution is prepared, it is 5~12 to adjust pH value, and weak cation surfactant solution is added later and stirs evenly so that
[Ce3+] it is 0.01~0.11mol/L, a concentration of 0.1~2.5g/L of weak cation surfactant；S2：Configure precipitating reagent
Aqueous solution, and make a concentration of 0.01~0.10mol/L of precipitating reagent；S3：S1 is added with preset flow rate in the solution that S2 is obtained
It in obtained solution, is aged after stirring, obtains hexagon sheet carbonic acid through being filtered, washed and drying and processing successively later
Cerium particle.
Preferably, in S1：Cerium solution is selected one or more in cerous nitrate, cerium chloride, cerous acetate and cerous sulfate；It is weak
Cationic surfactant specifically selects amide family macromolecule surfactant, and preferred polyvinylpyrrolidone.
Preferably, polyvinylpyrrolidone is selected one or more in the trade mark K-15, K-30, K-60 and K-90, and board
The polyvinylpyrrolidone average molecular weight of number K-15, K-30, K-60 and K-90 are respectively 10000,40000,160000 and
360000。
Preferably, in S2：Precipitating reagent is soluble carbonate salt, and soluble carbonate salt includes ammonium carbonate, ammonium hydrogen carbonate, carbonic acid
It is one or more in sodium and sodium bicarbonate.
Preferably, precipitating reagent and the mass ratio of cerium salt are 1：(1~2).
Preferably, in S3：Preset flow rate is 0~5h in terms of the addition time of S2 solution；The time of stirring is 0.5h, old
The change time is 0.5~48h.
Preferably, in S3：It is filtered, washed and is specifically included with drying and processing：The product filtering that ageing is obtained, collects filter
Cake；Filter cake is used into deionized water cleaning 3 times, then alcohol is washed 2 times；Filter cake after alcohol is washed dries 2h at 60 DEG C, obtains six sides
Shape flake cerium carbonate particle.
Second aspect provides hexagon flake cerium carbonate particle according to the present invention, and cerous carbonate particle is evenly dispersed six
Side shape sheet, the hexagonal surfaces long side are 2.5~6 μm, and short side is 0.8~3.5 μm.
Technical solution provided by the invention has following advantageous effect：
(1) present invention utilizes the side of water-soluble amide family macromolecule surfactant template regulation and control carbonate synthesis cerium for the first time
Method simulates the liquid-phase precipitation system of biomineralization environment, using weak cation surfactant polyvinylpyrrolidone as template
Agent, be prepared particle size uniformity, pattern rule hexagon flake cerium carbonate particle.
(2) present invention utilizes the polar group lactams and oxygen atom with hydrophilic interaction in polyvinylpyrrolidonemolecules molecules
The trend that electronics is provided in oriented pyrrolidone ring controls nucleation process and crystalline substance by the effect of electron adsorption and space constraint
Body is grown so that the size of carbonic acid cerium crystal, pattern are controlled and adjusted.In addition, low in raw material price of the present invention, method and
Equipment is simple and convenient to operate, and easily realizes industrialized production, and the cerous carbonate particle being prepared and the oxidation obtained after calcination
Cerium particle significantly increases ultraviolet absorption ability, can be used in cosmetic industry.
(3) the liquid-phase precipitation system of present invention simulation biomineralization environment prepares hexagon flake cerium carbonate particle, entirely
Reaction process carries out at room temperature, and reaction condition is mild, cost of material is low and easily controllable.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 is the SEM figures of the cerous carbonate particle for the random sheet being prepared in the embodiment of the present invention one；
Fig. 2 is the SEM figures for the hexagon flake cerium carbonate particle being prepared in the embodiment of the present invention two；
Fig. 3 is the SEM figures for the hexagon flake cerium carbonate particle being prepared in the embodiment of the present invention three；
Fig. 4 is the SEM figures for the hexagon flake cerium carbonate particle being prepared in the embodiment of the present invention four；
Fig. 5 is the SEM figures for the hexagon flake cerium carbonate particle being prepared in the embodiment of the present invention five；
Fig. 6 is the SEM figures for the hexagon flake cerium carbonate particle being prepared in the embodiment of the present invention six.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.The following examples are only intended to illustrate the technical solution of the present invention more clearly, therefore is intended only as example, without
It can be limited the scope of the invention with this.
Experimental method in following embodiments is unless otherwise specified conventional method.Examination as used in the following examples
Material is tested, is to be commercially available from conventional reagent shop unless otherwise specified.Quantitative test in following embodiment, is all provided with
Three repeated experiments are set, data are the average value or mean+SD of three repeated experiments.(the NH that the present invention uses4)2CO3、NH4HCO3Purchased from three factory of Tianjin reagent, polyvinylpyrrolidone is purchased from Tianjin Kermel Chemical Reagent Co., Ltd.,
Ethyl alcohol is analysis net product.
The present invention provides a kind of preparation method of hexagon flake cerium carbonate particle, includes the following steps：
S1：Compound concentration be 1.55mol/L cerium solution, adjust pH value be 5~12, take 1.5~16.5mL of the solution in
In 1000mL beakers, 133mL is added water to；Amide family macromolecule surfactant polyvinylpyrrolidone is weighed, adds water 100mL molten
Solution；Surfactant solution is stirred, cerium solution is added to uniform so that [Ce3+] it is 0.01~0.11mol/L, polyethylene pyrrole
A concentration of 0.1~2.5g/L of pyrrolidone.Wherein, cerium solution selects one kind in cerous nitrate, cerium chloride, cerous acetate and cerous sulfate
Or it is a variety of；Weak cation surfactant specifically selects amide family macromolecule surfactant, and preferred polyvinylpyrrolidone.
S2：Weigh precipitating reagent so that the ratio of precipitating reagent and cerium oxide is 1~2 (mass ratio), is dissolved in water, makes precipitation
A concentration of 0.01~0.10mol/L of agent, is uniformly mixed.Wherein, precipitating reagent is soluble carbonate salt, soluble carbonate salt
Including one or more in ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate and sodium bicarbonate.
S3：Solution that S2 is obtained is added with preset flow rate in the solution that S1 is obtained with peristaltic pump, feed time is 0~
5h, continues to stir 0.5h after adding, is aged 0~48h, filter, and washing after drying, obtains hexagon flake cerium carbonate particle.Its
In, it is filtered, washed and is specifically included with drying and processing：The product filtering that ageing is obtained, collects filter cake；Filter cake is used into deionization
Water clean 3 times, then alcohol wash 2 times；Filter cake after alcohol is washed dries 2h at 60 DEG C, obtains hexagon flake cerium carbonate particle.
The present invention is further explained in the light of specific embodiments.
Embodiment one
The present embodiment is tested as a comparison, and polyvinylpyrrolidone carbonate synthesis cerium particle is not added in preparation process.Tool
Body includes the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 5 to adjust pH value, and solution 7.5mL is taken to be burnt in 1000mL
In cup, 233mL is added water to so that [Ce3+] it is 0.05mol/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：Precipitant solution is added to by certain flow rate in cerium solution with peristaltic pump, feed time 1h has fed
Continue to stir 0.5h after, be aged 4h, filter, drying obtains the cerous carbonate particle of random sheet, specifically as shown in Figure 1.
Embodiment two
The present embodiment provides a kind of preparation methods of hexagon flake cerium carbonate particle, include the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 5 to adjust pH value, and solution 7.5mL is taken to be burnt in 1000mL
In cup, 133mL is added water to；It weighs amide family macromolecule surfactant and takes polyvinylpyrrolidone (K-30) 0.233g, add water
100mL dissolves；Polyvinylpyrrolidonesolution solution is stirred, cerium solution is added to uniform so that [Ce3+] it is 0.05mol/L,
[PVP] is 1g/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：The mixing that precipitant solution is added to cerous nitrate and polyvinylpyrrolidone with peristaltic pump by certain flow rate is molten
In liquid, feed time 1h continues to stir 0.5h after the completion of charging, is aged 4h, filters, and drying obtains hexagon sheet carbonic acid
Cerium particle, it is specific as shown in Figure 2.
Embodiment three
The present embodiment provides a kind of preparation methods of hexagon flake cerium carbonate particle, include the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 5 to adjust pH value, and solution 7.5mL is taken to be burnt in 1000mL
In cup, 133mL is added water to；Polyvinylpyrrolidone (K-30) 0.466g is weighed, water 100mL is added to dissolve；By polyvinylpyrrolidine
Cerium solution is added to uniform in the stirring of ketone solution so that [Ce3+] it is 0.05mol/L, [PVP] is 2g/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：The mixing that precipitant solution is added to cerous nitrate and polyvinylpyrrolidone with peristaltic pump by certain flow rate is molten
In liquid, feed time 1h continues to stir 0.5h after the completion of charging, is aged 4h, filters, and drying obtains hexagon sheet carbonic acid
Cerium particle, it is specific as shown in Figure 3.
Example IV
The present embodiment provides a kind of preparation methods of hexagon flake cerium carbonate particle, include the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 12 to adjust pH value, takes solution 16.5mL in 1000mL
In beaker, 133mL is added water to；Polyvinylpyrrolidone (K-30) 0.466g is weighed, water 100mL is added to dissolve；By polyvinyl pyrrole
Cerium solution is added to uniform in the stirring of alkanone solution so that [Ce3+] it is 0.11mol/L, [PVP] is 2g/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：The mixing that precipitant solution is added to cerous nitrate and polyvinylpyrrolidone with peristaltic pump by certain flow rate is molten
In liquid, feed time 1h continues to stir 0.5h after the completion of charging, is aged 4h, filters, and drying obtains hexagon sheet carbonic acid
Cerium particle, it is specific as shown in Figure 4.
Embodiment five
The present embodiment provides a kind of preparation methods of hexagon flake cerium carbonate particle, include the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 12 to adjust pH value, and solution 7.5mL is taken to be burnt in 1000mL
In cup, 133mL is added water to；Polyvinylpyrrolidone (K-30) 0.5825g is weighed, water 100mL is added to dissolve；By polyvinylpyrrolidine
Cerium solution is added to uniform in the stirring of ketone solution so that [Ce3+] it is 0.05mol/L, [PVP] is 2.5g/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：The mixing that precipitant solution is added to cerous nitrate and polyvinylpyrrolidone with peristaltic pump by certain flow rate is molten
In liquid, feed time 1h continues to stir 0.5h after the completion of charging, is aged 4h, filters, and drying obtains hexagon sheet carbonic acid
Cerium particle, it is specific as shown in Figure 5.
Embodiment six
The present embodiment provides a kind of preparation methods of hexagon flake cerium carbonate particle, include the following steps：
S1：Compound concentration is the cerous nitrate solution of 1.55mol/L, and it is 8 to adjust pH value, and solution 7.5mL is taken to be burnt in 1000mL
In cup, 133mL is added water to；Polyvinylpyrrolidone (K-60) 0.466g is weighed, water 100mL is added to dissolve；By polyvinylpyrrolidine
Cerium solution is added to uniform in the stirring of ketone solution so that [Ce3+] it is 0.05mol/L, [PVP] is 2g/L.
S2：Precipitating reagent ammonium carbonate 3g is weighed, adds water 625mL to dissolve, is uniformly mixed.
S3：The mixing that precipitant solution is added to cerous nitrate and polyvinylpyrrolidone with peristaltic pump by certain flow rate is molten
In liquid, feed time 1h continues to stir 0.5h after the completion of charging, is aged 4h, filters, and drying obtains hexagon sheet carbonic acid
Cerium particle, it is specific as shown in Figure 6.
In addition, in order to more intuitively highlight difference and the advantage of preparation method of the present invention of each embodiment, by each embodiment
Experiment condition and experimental result are listed in table 1.
1 each embodiment experiment condition of table and experimental result list
It should be noted that the case where being enumerated in addition to above-described embodiment two to embodiment six, selects other preparation methods
Parameter is also feasible.
The method that the present invention utilizes water-soluble amide family macromolecule surfactant template regulation and control carbonate synthesis cerium for the first time, mould
The liquid-phase precipitation system of quasi- biomineralization environment, using weak cation surfactant polyvinylpyrrolidone as template, system
It is standby obtain particle size uniformity, pattern rule hexagon flake cerium carbonate particle.Specifically, polyvinylpyrrolidone point is utilized
The trend that electronics is provided on polar group lactams and the oriented pyrrolidone ring of oxygen atom in son with hydrophilic interaction, passes through electricity
The effect of son absorption and space constraint, controls nucleation process and crystal growth so that the size of carbonic acid cerium crystal, pattern are controlled
System and adjusting.In addition, low in raw material price of the present invention, method and apparatus are simple and convenient to operate, industrialized production is easily realized, and
The cerous carbonate particle being prepared and the cerium oxide particles obtained after calcination significantly increase ultraviolet absorption ability, Neng Gouyong
In cosmetic industry.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.Unless specifically stated otherwise, it otherwise illustrates in these embodiments
Component and opposite step, numerical expression and the numerical value of step are not limit the scope of the invention.It is illustrated and described herein
In all examples, unless otherwise prescribed, any occurrence should be construed as merely illustrative, not as limitation, because
This, other examples of exemplary embodiment can have different values.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in protection scope of the present invention.
Claims (8)
1. a kind of preparation method of hexagon flake cerium carbonate particle, which is characterized in that include the following steps：
S1：Cerium solution is prepared, it is 5~12 to adjust pH value, and weak cation surfactant solution is added later and stirs evenly,
Make [Ce3+] it is 0.01~0.11mol/L, a concentration of 0.1~2.5g/L of weak cation surfactant；
S2：The aqueous solution of precipitating reagent is configured, and makes a concentration of 0.01~0.10mol/L of the precipitating reagent；
S3：The solution that the S2 is obtained is added with preset flow rate in the solution that the S1 is obtained, is aged after stirring, later
Successively through being filtered, washed and drying and processing, hexagon flake cerium carbonate particle is obtained.
2. the preparation method of hexagon flake cerium carbonate particle according to claim 1, it is characterised in that：
In the S1：
The cerium solution is selected one or more in cerous nitrate, cerium chloride, cerous acetate and cerous sulfate；
The weak cation surfactant specifically selects amide family macromolecule surfactant, and preferred polyvinylpyrrolidine
Ketone.
3. the preparation method of hexagon flake cerium carbonate particle according to claim 2, it is characterised in that：
It is one or more in described the polyvinylpyrrolidone selection trade mark K-15, K-30, K-60 and K-90, and the trade mark K-
15, the polyvinylpyrrolidone average molecular weight of K-30, K-60 and K-90 are respectively 10000,40000,160000 and 360000.
4. the preparation method of hexagon flake cerium carbonate particle according to claim 1, it is characterised in that：
In the S2：
The precipitating reagent is soluble carbonate salt, and the soluble carbonate salt includes ammonium carbonate, ammonium hydrogen carbonate, sodium carbonate and carbonic acid
It is one or more in hydrogen sodium.
5. the preparation method of hexagon flake cerium carbonate particle according to claim 4, it is characterised in that：
The precipitating reagent and the mass ratio of the cerium salt are 1：(1~2).
6. the preparation method of hexagon flake cerium carbonate particle according to claim 1, it is characterised in that：
In the S3：
The preset flow rate is 0~5h in terms of the addition time of S2 solution；The time of the stirring is 0.5h, and digestion time is
0.5~48h.
7. the preparation method of hexagon flake cerium carbonate particle according to claim 1, it is characterised in that：
In the S3：
Described be filtered, washed specifically includes with drying and processing：By the product filtering for being aged and obtaining, filter cake is collected；It will be described
Filter cake is washed 2 times using deionized water cleaning 3 times, then alcohol；Filter cake after the alcohol is washed dries 2h at 60 DEG C, obtains described six
Side shape flake cerium carbonate particle.
8. the hexagon flake cerium carbonate particle that claim 1~7 any one of them method is prepared, it is characterised in that：
The cerous carbonate particle be evenly dispersed hexagon sheet, and hexagonal surfaces long side be 2.5~6 μm, short side be 0.8~
3.5μm。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589870A (en) * | 2019-09-16 | 2019-12-20 | 桂林电子科技大学 | Method for preparing monodisperse spherical nano rare earth oxide by uniform precipitation process |
| CN112126977A (en) * | 2020-08-11 | 2020-12-25 | 南昌大学 | Method for preparing high-purity flaky single crystal and flaky crystal dense aggregated cerium carbonate |
| CN115010165A (en) * | 2022-05-20 | 2022-09-06 | 全南县新资源稀土有限责任公司 | Preparation method of rare earth carbonate and preparation method of rare earth oxide |
| CN115160935A (en) * | 2022-08-26 | 2022-10-11 | 江南大学 | Octahedral cerium oxide abrasive particle polishing solution and preparation method and application thereof |
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2018
- 2018-05-02 CN CN201810410728.XA patent/CN108285168A/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589870A (en) * | 2019-09-16 | 2019-12-20 | 桂林电子科技大学 | Method for preparing monodisperse spherical nano rare earth oxide by uniform precipitation process |
| CN112126977A (en) * | 2020-08-11 | 2020-12-25 | 南昌大学 | Method for preparing high-purity flaky single crystal and flaky crystal dense aggregated cerium carbonate |
| CN115010165A (en) * | 2022-05-20 | 2022-09-06 | 全南县新资源稀土有限责任公司 | Preparation method of rare earth carbonate and preparation method of rare earth oxide |
| CN115160935A (en) * | 2022-08-26 | 2022-10-11 | 江南大学 | Octahedral cerium oxide abrasive particle polishing solution and preparation method and application thereof |
| CN115160935B (en) * | 2022-08-26 | 2023-08-25 | 江南大学 | Octahedral cerium oxide abrasive particle polishing solution and preparation method and application thereof |
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Application publication date: 20180717 |