CN116102043A - Zirconium ion doped flaky alumina and preparation method and application thereof - Google Patents

Zirconium ion doped flaky alumina and preparation method and application thereof Download PDF

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CN116102043A
CN116102043A CN202310003971.0A CN202310003971A CN116102043A CN 116102043 A CN116102043 A CN 116102043A CN 202310003971 A CN202310003971 A CN 202310003971A CN 116102043 A CN116102043 A CN 116102043A
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zirconium
solution
flaky alumina
zirconium ion
sulfate
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王斌
周子热
刘一军
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Guoke Guanghua Fine Chemical Incubator Nanxiong Co ltd
Guoke Guanghua Nanxiong New Materials Research Institute Co ltd
Shaoguan Institute Of New Materials
Guangzhou Chemical Co Ltd of CAS
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Guoke Guanghua Fine Chemical Incubator Nanxiong Co ltd
Guoke Guanghua Nanxiong New Materials Research Institute Co ltd
Shaoguan Institute Of New Materials
Guangzhou Chemical Co Ltd of CAS
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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
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/32—Thermal decomposition of sulfates including complex sulfates, e.g. alums
    • 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
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/021—After-treatment of oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

The invention belongs to the field of inorganic powder preparation, and discloses a zirconium ion doped flaky alumina body, and a preparation method and application thereof. Firstly, aluminum sulfate octadecanoate (Al 2 (SO 4 ) 3 ·18H 2 O) is an aluminum source, sodium sulfate (Na 2 SO 4 ) Potassium sulfate (K) 2 SO 4 ) Is molten salt, sodium carbonate (Na 2 CO 3 ) As a gel, zirconium ions are one or two of nano zirconium dioxide, zirconium oxychloride and zirconium nitrate as dopants, and the flaky alumina powder material with regular morphology and the diameter-thickness ratio controlled between 8 and 100 is prepared. The method has the advantages of simple operation, easily available raw materials, controllable product morphology and uniform particle size distribution, and can be applied to the preparation and production of the flaky alumina powder material.

Description

Zirconium ion doped flaky alumina and preparation method and application thereof
Technical Field
The invention belongs to the field of inorganic powder preparation, and particularly relates to a zirconium ion doped flaky alumina body, and a preparation method and application thereof.
Background
The global reserves of aluminum are rich, which is inferior to silicon and oxygen, and has huge application value. The flaky alumina as one kind of inorganic powder material has unique two-dimensional geometric plane structure, micron size in transverse direction and nanometer size in longitudinal direction, and has excellent performance of micro-nanometer material. The adhesive has good adhesive force, obvious shielding effect and light reflecting capacity, and has excellent performances of acid and alkali resistance, high temperature resistance, high hardness and the like. The flaky alumina has wide application, and can be widely applied to various fields such as pigment, paint, fluorescent powder raw material, cosmetics, automobile finish, printing ink, abrasive and the like. Since the crystal face of the flaky alumina has anisotropy, the growth speed of each crystal face is different in the growth process, and the mechanical properties of each crystal face are different, so that distortion or microcrack phenomenon can be generated in the growth process of the flaky alumina, and the performance of the flaky alumina is greatly influenced. Therefore, the preparation of the flaky alumina with high purity, regular shape and controllable diameter-thickness ratio and uniform particle size distribution is a problem which needs to be solved urgently at present.
The invention patent CN 110436501A discloses a preparation method of flaky alumina for the pearlescent pigment field, which comprises the steps of blending an aluminum source with single composition or mixed molten salt of sodium chloride, potassium chloride, sodium sulfate and potassium sulfate, adding magnesium sulfate solution containing magnesium ions, drying, calcining and washing to obtain flaky alumina, wherein the obtained product has uniform particle size and larger diameter and thickness, and has better heat resistance and mechanical strength. The invention patent CN 113173590A discloses a method for preparing flaky alumina based on liquid metal, which mainly adopts a molten salt method to mix and calcine molten salt and aluminum-containing compound and gallium-based or bismuth-based liquid metal, and prepares flaky alumina powder with good dispersibility and easy extraction by controlling sintering temperature, liquid metal type and dosage.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the primary aim of the invention is to provide a preparation method of a zirconium ion doped flaky alumina body; the diameter-thickness ratio of the flaky alumina body is controllable.
Another object of the present invention is to provide a zirconium ion doped flaky alumina body prepared by the above preparation method.
It is still another object of the present invention to provide a use of the above zirconium ion doped flaky alumina body.
The invention adopts a molten salt method, prepares precursor powder by controlling the source and doping amount of zirconium ions, and then prepares the alumina powder material with controllable diameter-thickness ratio by high-temperature sintering. Zr (Zr) 4+ (72 pm) ion radius much larger than Al 3+ The ionic radius of (54 pm) can hardly enter into crystal lattice of alumina to form vacancy defect, when the temperature is raised, zirconium ions are mainly adsorbed on the surface of flaky alumina in the form of zirconia, so that crystal planes of different crystal planes can be changed, and the growth speed of different crystal planes is controlled. When the adding amount of the zirconium ions is low, the growth of the flaky alumina cannot be obviously regulated and controlled; when the content of the flaky alumina is too high, zirconium ions are converted into impurities, so that nucleation is uneven in the growth process of the alumina crystals, the size of the crystals is reduced, and the generated flaky alumina is fragmented, so that the doping amount of the zirconium ions is controlled to be 3-9 wt% (theoretically generated Al) 2 O 3 Content calculation), thereby realizing the regulation and control of the diameter-thickness ratio in the growth of the flaky alumina at about 8-100.
The aim of the invention is achieved by the following technical scheme:
a preparation method of a zirconium ion doped flaky alumina body comprises the following operation steps:
(1) Aluminum sulfate octadecanoate (Al) 2 (SO 4 ) 3 ·18H 2 O) dissolving in deionized water, adding zirconium ion-containing compound, and adding sodium sulfate (Na 2 SO 4 ) And potassium sulfate (K) 2 SO 4 ) Stirring to completely dissolve as molten salt, and performing ultrasonic treatment to obtain solution A;
(2) Weighing anhydrous sodium carbonate, dissolving in deionized water, and adding trisodium phosphate dodecahydrate to prepare solution B;
(3) Placing the solution A obtained in the step (1) into a water bath, and pouring the solution B obtained in the step (2) into the solution A under magnetic stirring to generate gel until no bubbles are generated; vacuum drying the gel, grinding, sieving to obtain aluminum hydroxide precursor powder;
(4) And (3) placing the aluminum hydroxide precursor powder obtained in the step (3) into a muffle furnace for calcination, and dissolving, filtering and drying the obtained block to obtain the zirconium ion doped flaky alumina body.
The molar ratio of the sodium sulfate to the potassium sulfate in the step (1) is 1:5-5:1; the molar ratio of the aluminum sulfate octadecanoate to the molten salt is 1:1-1:5.
The dosage of the aluminum sulfate octadecatrier in the step (1) is 15-23 g, the dosage of the sodium sulfate is 5-15 g, the dosage of the potassium sulfate is 3-12 g, and the dosage of the zirconium ion-containing compound is 3-9 wt.% calculated by the content of the theoretically generated aluminum oxide.
The zirconium ion compound in the step (1) is one or two of nano zirconium dioxide, zirconium oxychloride and zirconium nitrate; the ultrasonic time is 10-20 min.
The dosage of the anhydrous sodium carbonate in the step (2) is 8-15 g, and the dosage of the trisodium phosphate dodecahydrate is 0.15-0.6 g.
The temperature of the water bath kettle in the step (3) is 70-80 ℃; the drying temperature is 100-120 ℃, and the drying time is 20-25 h; the sieving is carried out by sieving with a 30-80 mesh sieve.
The calcining temperature in the step (4) is 900-1100 ℃, and the calcining time is 4-6 hours.
A zirconium ion doped flaky alumina body prepared by the preparation method.
The zirconium ion doped flaky alumina body is applied to the fields of abrasive materials, pearlescent pigments, coatings and composite materials.
The invention mainly uses zirconium ion source speciesThe class and the dosage are adjusted, and the regulation and control of the size and the morphology of the flaky alumina are realized. The invention adopts nanometer zirconium dioxide (20 nm) and zirconium oxychloride (ZrOCl) 2 ) Zirconium nitrate (Zr (NO) 3 ) 4 ) As a zirconium ion source, the dosage is controlled at the same time, and the regulation and control of the size and the morphology of the flaky alumina are realized. According to the research, when the content of the adopted zirconium ion source is low, the oriented growth of the alumina crystal cannot be effectively induced, and the regulation and control of the size and the morphology of the flaky alumina cannot be realized; the introduction of an excessive source of zirconium ions causes zirconium ions to be converted into impurities, which causes the flaky alumina to be hindered during the nucleation growth, resulting in fragmentation of the finally formed flaky alumina. The zirconium ion dosage adopted by the invention is 3-9 wt% (calculated by the content of alumina theoretically generated), and the regulation and control of the size of the flaky alumina is effectively realized.
Compared with the prior art, the invention has the following advantages and effects:
(1) The invention has low cost of raw materials and convenient material acquisition.
(2) The invention has simple operation and is easy for batch synthesis.
(3) The size of the flaky alumina prepared by the invention is controllable, and the effective regulation and control of the diameter-thickness ratio of the flaky alumina can be realized by changing the source and the dosage of zirconium ions.
(4) The flaky alumina prepared by the invention has the advantages of regular morphology, uniform particle size distribution, controllable diameter-thickness ratio and the like, and has wide application prospect in the fields of abrasive materials, pearlescent pigments, coatings and composite materials.
Drawings
FIG. 1 is a photomicrograph of a flaky alumina prepared in example 2 of the present invention.
Detailed Description
The present invention is further illustrated below in conjunction with specific examples, but should not be construed as limiting the invention.
The following examples used molten salt synthesis of platy alumina using materials including: aluminium source (Al) 2 (SO 4 ) 3 ·18H 2 O): 15-23 g, meltingSalt: sodium sulfate (Na) 2 SO 4 ): 5-15 g, potassium sulfate: 3-12 g, zirconium source: 0.01 to 1.0g of gel: sodium carbonate: 8-15 g.
Example 1
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, adding 0.09g of nano zirconium dioxide (20 nm) into the molten salt, stirring until the mixture is completely dissolved, and carrying out ultrasonic treatment for 10min to prepare solution A, wherein the molar ratio of an aluminum source to the molten salt is 1:4; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering at 1100 ℃ for 5 hours, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 1.
Example 2
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in three beakers and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, adding 0.18g of nano zirconium dioxide (20 nm) into the molten salt with the molar ratio of an aluminum source to the molten salt of 1:4, stirring until the nano zirconium dioxide is completely dissolved, and carrying out ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; the obtained aluminum hydroxide precursor powder is placed in a muffle furnace to be sintered for 5 hours at 1100 ℃, and is washed, filtered and dried to obtain the zirconium ion doped flaky alumina 2, and the microscopic morphology photo of the aluminum hydroxide precursor powder is shown in figure 1.
Example 3
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, adding 0.27g of nano zirconium dioxide (20 nm) into the molten salt, stirring until the mixture is completely dissolved, and carrying out ultrasonic treatment for 10min to prepare solution A, wherein the molar ratio of an aluminum source to the molten salt is 1:4; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering at 1000 ℃ for 5 hours, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 3.
Example 4
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.13g of zirconium oxychloride (ZrOCl) was added at a molar ratio of aluminum source to molten salt of 1:4 2 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering at 1000 ℃ for 5 hours, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 4.
Example 5
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.26g of zirconium oxychloride (ZrOCl) was added at a molar ratio of aluminum source to molten salt of 1:4 2 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering for 5 hours at 1000 ℃, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 5.
Example 6
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.39g of zirconium oxychloride (ZrOCl) was added at a molar ratio of aluminum source to molten salt of 1:4 2 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering at 1000 ℃ for 5 hours, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 6.
Example 7
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.25g of zirconium nitrate (Zr (NO) 3 ) 4 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating the solution A in a water bath kettle at 75 DEG CStirring, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering for 5 hours at 900 ℃, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 7.
Example 8
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.50g of zirconium nitrate (Zr (NO) 3 ) 4 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; and (3) placing the obtained aluminum hydroxide precursor powder in a muffle furnace, sintering for 5 hours at 900 ℃, washing with water, filtering, and drying to obtain the zirconium ion doped flaky alumina 8.
Example 9
Weigh 20.00g Al 2 (SO 4 ) 3 ·18H 2 O was placed in a beaker and 10.23g Na was added, respectively 2 SO 4 And 8.34g K 2 SO 4 As molten salt, 0.75g of zirconium nitrate (Zr (NO) 3 ) 4 ) Stirring until the solution is completely dissolved, and performing ultrasonic treatment for 10min to prepare solution A; weigh 9.54g Na 2 CO 4 Adding a small amount of deionized water, trisodium phosphate dodecahydrate 0.30g, and stirring until the trisodium phosphate dodecahydrate is completely dissolved to prepare solution B; heating and stirring the solution A in a water bath at 75 ℃, slowly pouring the solution B into the solution A until the solution A is completely gelled and no bubbles are generated, vacuum drying at 120 ℃ for 24 hours, grinding into powder, and sieving to prepare aluminum hydroxide precursor powder; the obtained aluminum hydroxide precursor powder is put into a muffle furnace to be burned at 900 DEG CAnd (5) binding for 5 hours, and washing, filtering and drying to obtain the zirconium ion doped flaky alumina 9.
The particle size distribution and the ratio of the diameter to the thickness of the flaky alumina obtained in examples 1 to 9 are shown in Table 1:
table 1 shows a comparative table of particle size distribution and aspect ratio of flaky alumina prepared in the examples of the present invention
Figure BDA0004035393830000081
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (9)

1. The preparation method of the zirconium ion doped flaky alumina body is characterized by comprising the following operation steps:
(1) Dissolving aluminum sulfate octadecanoate in deionized water, adding a zirconium ion-containing compound, adding sodium sulfate and potassium sulfate as molten salt, stirring until the aluminum sulfate octadecanoate is completely dissolved, and carrying out ultrasonic treatment to obtain solution A;
(2) Weighing anhydrous sodium carbonate, dissolving in deionized water, and adding trisodium phosphate dodecahydrate to prepare solution B;
(3) Placing the solution A obtained in the step (1) into a water bath, and pouring the solution B obtained in the step (2) into the solution A under magnetic stirring to generate gel until no bubbles are generated; vacuum drying the gel, grinding, sieving to obtain aluminum hydroxide precursor powder;
(4) And (3) placing the aluminum hydroxide precursor powder obtained in the step (3) into a muffle furnace for calcination, and dissolving, filtering and drying the obtained block to obtain the zirconium ion doped flaky alumina body.
2. The method of manufacturing according to claim 1, characterized in that: the molar ratio of the sodium sulfate to the potassium sulfate in the step (1) is 1:5-5:1; the molar ratio of the aluminum sulfate octadecanoate to the molten salt is 1:1-1:5.
3. The method of manufacturing according to claim 1, characterized in that: the dosage of the aluminum sulfate octadecatrier in the step (1) is 15-23 g, the dosage of the sodium sulfate is 5-15 g, the dosage of the potassium sulfate is 3-12 g, and the dosage of the zirconium ion-containing compound is 3-9 wt.% calculated by the content of the theoretically generated aluminum oxide.
4. The method of manufacturing according to claim 1, characterized in that: the zirconium ion compound in the step (1) is one or two of nano zirconium dioxide, zirconium oxychloride and zirconium nitrate; the ultrasonic time is 10-20 min.
5. The method of manufacturing according to claim 1, characterized in that: the dosage of the anhydrous sodium carbonate in the step (2) is 8-15 g, and the dosage of the trisodium phosphate dodecahydrate is 0.15-0.6 g.
6. The method of manufacturing according to claim 1, characterized in that: the temperature of the water bath kettle in the step (3) is 70-80 ℃; the drying temperature is 100-120 ℃, and the drying time is 18-25 hours; the sieving is carried out by sieving with a 30-80 mesh sieve.
7. The method of manufacturing according to claim 1, characterized in that: the calcining temperature in the step (4) is 900-1100 ℃, and the calcining time is 4-6 hours.
8. A zirconium ion doped flaky alumina body prepared by the preparation method of any one of claims 1 to 7.
9. Use of the zirconium ion doped platelet-shaped alumina body according to claim 8 in the field of abrasives, pearlescent pigments, paints, composites.
CN202310003971.0A 2023-01-03 2023-01-03 Zirconium ion doped flaky alumina and preparation method and application thereof Pending CN116102043A (en)

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