CN112919548A - Purple luster iron oxide flaky particles and preparation method thereof - Google Patents
Purple luster iron oxide flaky particles and preparation method thereof Download PDFInfo
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- CN112919548A CN112919548A CN202110256518.1A CN202110256518A CN112919548A CN 112919548 A CN112919548 A CN 112919548A CN 202110256518 A CN202110256518 A CN 202110256518A CN 112919548 A CN112919548 A CN 112919548A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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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
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a purple glossy iron oxide flaky particle and a preparation method thereof, belonging to the field of inorganic materials. The method uses alkali and Fe (NO)3)3·9H2O as raw material, alkali and Fe (NO)3)3·9H2And fully and uniformly stirring O to obtain slurry, and carrying out thermal reaction on the slurry at the temperature of between 100 and 120 ℃ for 6 to 48 hours to prepare the purple glossy iron oxide flaky particles. The method can carry out reaction at a lower temperature without adding a hydrosolvent, avoids the strong reaction of strong alkali and water and potential safety hazards caused by solution leakage in a high-temperature and high-pressure environment, adopts any organic surfactant or surface modifier, has simple steps without post-treatment, does not pollute the environment and is easy for industrial production. Micron-sized purple luster Fe prepared by adopting the method2O3The obtained product has smooth flaky surface, better dispersibility, uniform particle size distribution and good light reflection effect when being illuminated.
Description
Technical Field
The invention belongs to the field of inorganic materials, and relates to purple glossy iron oxide flaky particles and a preparation method thereof.
Background
The iron oxide has the characteristics of large storage capacity in the nature, easily obtained materials, low price, less environmental pollution, excellent stability and corrosion resistance and the like. The iron oxide is a common iron oxide with a stable crystal form, and can be applied to magnetic materials, photocatalysts, electrode materials of lithium ion batteries, biomedicine, and has important application in the industrial and research fields of coatings and pigments, magnetic recording devices, electronic materials, gas sensors and the like. The properties of iron oxides are related not only to their own physical and chemical properties, but also to their morphology, particle size and dispersibility. The flake iron oxide attracts much attention because of its excellent physical and chemical properties.
The current methods for synthesizing the flake ferric oxide mainly comprise a sol-gel method, a gas phase method, a high-temperature molten salt method, a hydrothermal synthesis method and the like. The sol-gel method mainly comprises the steps of preparing iron salt and an organic solvent from raw materials, and preparing the flaky iron oxide with the particle size of 5-100 nm through high-temperature calcination by utilizing hydrolytic polycondensation reaction. The gas phase method is to fill gasified ferric chloride and oxygen into a bed layer filled with spherical filler and salt, and react at 400-750 ℃ to prepare flaky ferric oxide with the particle size of about 100 mu m. The disadvantages are that the product is easy to agglomerate on the wall of the reactor, is not easy to strip, the reactor needs to be maintained regularly, the efficiency is low and the cost is high. The high-temperature molten salt method is to chlorinate scrap iron or waste iron sheet serving as a raw material with chlorine to generate ferric chloride, or directly use ferrous salt serving as a raw material, then mix the ferrous salt with chloride of alkali metal, react at 650-800 ℃, and oxidize with oxygen in a high-temperature molten state to prepare the ferric oxide with a hexagonal sheet structure with higher purity. However, in this method, the reaction temperature is high, the fluidity of the system is reduced with the progress of the reaction, the transfer rate of oxygen is reduced, the conversion rate is also gradually reduced, and the particle size of the product is not uniform. The hydrothermal method is a method for reacting reactants in a closed system and a liquid solvent at a certain temperature under the autogenous pressure of the solvent, wherein the raw materials of the method mostly adopt iron hydroxide, and the flaky iron oxide is prepared by hydrothermal treatment under the alkaline condition, the reaction temperature is generally 180-350 ℃, and the particle size of a product is 200 nm-1 mu m. The method has the disadvantages of high temperature and high pressure, high requirements on reaction equipment, leakage of strong alkaline aqueous solution and other operation risks.
In conclusion, the flake iron oxide prepared by the above method is red, and needs to be reacted under higher temperature, and has the disadvantages of non-uniform particle size, low yield of the obtained product, complicated operation, poor safety and the like. Therefore, a new preparation process of green and nontoxic iron oxide with safe operation, simplicity and rapidness and good particle size distribution is needed to be developed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the purple glossy iron oxide flaky particles and the preparation method thereof, the method has mild reaction conditions, does not need to add any solvent, is simple and convenient, and the prepared iron oxide has smooth surface, better dispersity, uniform particle size distribution and good light reflection effect when being illuminated.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the invention discloses a preparation method of purple luster iron oxide flaky particles, which are prepared from alkali and Fe (NO)3)3·9H2O as raw material, alkali and Fe (NO)3)3·9H2And fully and uniformly stirring O to obtain slurry, and carrying out thermal reaction on the slurry at the temperature of between 100 and 120 ℃ for 6 to 48 hours to prepare the purple glossy iron oxide flaky particles.
Preferably, the base used is KOH or NaOH.
Preferably, the base used and Fe (NO)3)3·9H2The molar ratio of O is (0.4-1): (0.03-0.1).
Preferably, the thorough mixing is performed by mixing the alkali and Fe (NO)3)3·9H2And O, stirring and mixing for 20-40 min.
Preferably, the thermal reaction is to put the slurry into a reaction kettle with a polytetrafluoroethylene lining for reaction, and the filling ratio of the reaction kettle is 85-90%.
Preferably, after the thermal reaction is finished, the method further comprises the following post-treatment operations:
and washing the obtained reactant until the pH value is 7.0-7.2, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple luster iron oxide flaky particles.
The invention also discloses the purple lustrous iron oxide flaky particles prepared by the preparation method, and the purple lustrous iron oxide flaky particles are flaky and smooth in surface, have the diameter of 5-10 mu m and the thickness of 1-1.5 mu m, and are uniform in particle size distribution.
Preferably, the purple lustrous iron oxide platelet particles have a light-reflecting effect on illumination.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a preparation method of purple luster iron oxide flaky particles, which is prepared from alkali and Fe (NO)3)3·9H2O is used as a raw material, the thermal reaction is carried out after the O is uniformly mixed, NO solvent is required to be added in the whole process, the thermal reaction temperature required by the method is low (100-120 ℃), water is not required to be added, and the raw material (Fe (NO) is utilized3)3·9H2O) can react with the combined water, thereby avoiding potential safety hazard caused by strong reaction of strong alkali and water, and adopts any organic surfactant or surface modifier, so that the method has simple and safe steps, does not need post treatment, has no environmental pollution and is easy for industrial production.
Further, Fe2O3Growth at a temperature, alkali and Fe (NO)3)3·9H2The molar ratio of O is (0.4-1): (0.03-0.1) excess alkali to make Fe2O3So that the growth is easier and Fe with good crystallinity is easy to obtain2O3。
The purple luster iron oxide flaky particles prepared by the method are micron-sized purple luster Fe2O3The particles are in a lamellar shape, have smooth surfaces, better dispersibility and uniform particle size distribution, and have good light reflection effect when being illuminated.
Drawings
FIG. 1 is a micron-sized purple lustrous flaky Fe obtained in example 3 of the present invention2O3XRD pattern of (a);
FIG. 2 is a micron-sized purple lustrous flaky Fe obtained in example 3 of the present invention2O3SEM picture of (1);
FIG. 3 is a micron-sized purple lustrous Fe flakes prepared in accordance with EXAMPLE 3 of the present invention2O3And (5) a picture of the appearance of the sample.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
example 1
1) 30g of NaOH and 16g of Fe (NO) were weighed out3)3·9H2Grinding O in an agate mortar at room temperature for 40min to obtain black brown mixed precursor slurry;
2) transferring the black-brown mixed precursor slurry into a reaction kettle with a polytetrafluoroethylene lining, wherein the filling ratio is 90%, and reacting for 24 hours at 100 ℃;
3) and after the reaction is finished, washing the obtained reactant until the pH value is 7.0, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple glossy iron oxide flaky particles.
Example 2
1) 55g of KOH and 16g of Fe (NO) were weighed out3)3·9H2Grinding O in an agate mortar at room temperature for 20min to obtain black-brown mixed precursor slurry;
2) transferring the black-brown mixed precursor slurry into a reaction kettle with a polytetrafluoroethylene lining, wherein the filling ratio is 85%, and reacting for 48 hours at 110 ℃;
3) and after the reaction is finished, washing the obtained reactant until the pH value is 7.2, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple glossy iron oxide flaky particles.
Example 3
1) 55g of KOH and 32g of Fe (NO) were weighed out3)3·9H2Grinding O in an agate mortar at room temperature for 30min to obtain black brown mixed precursor slurry;
2) transferring the black-brown mixed precursor slurry into a reaction kettle with a polytetrafluoroethylene lining, wherein the filling ratio is 90%, and reacting for 20h at 120 ℃;
3) and after the reaction is finished, washing the obtained reactant until the pH value is 7.0, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple glossy iron oxide flaky particles.
Example 4
1) 55g of KOH and 16g of Fe (NO) were weighed out3)3·9H2Grinding O in an agate mortar at room temperature for 25min to obtain black-brown mixed precursor slurry;
2) transferring the black-brown mixed precursor slurry into a reaction kettle with a polytetrafluoroethylene lining, wherein the filling ratio is 85%, and reacting for 6h at 120 ℃;
3) and after the reaction is finished, washing the obtained reactant until the pH value is 7.1, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple glossy iron oxide flaky particles.
FIG. 1 is a micron scale drawing of example 3 of the present inventionPurple Fe2O3The XRD pattern of the Fe-Fe alloy is a pure-phase Fe alloy with better product crystallinity2O3。
FIG. 2 is a micron grade purple Fe obtained in example 3 of the present invention2O3SEM picture of (1), from which Fe produced can be seen2O3Is in a sheet shape, the diameter is about 5 mu m to 10 mu m, the thickness is about 1 mu m to 1.5 mu m, and the surface is smooth.
FIG. 3 is a micron grade purple Fe prepared in accordance with the present invention as in example 32O3The appearance of the sample is a photograph, the sample is dark purple, and the sample has good light reflection effect when being illuminated.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A process for preparing the iron oxide particles with purple lustre features that the alkali and Fe (NO) are used3)3·9H2O as raw material, alkali and Fe (NO)3)3·9H2And fully and uniformly stirring O to obtain slurry, and carrying out thermal reaction on the slurry at the temperature of between 100 and 120 ℃ for 6 to 48 hours to prepare the purple glossy iron oxide flaky particles.
2. The method for preparing the purple lustrous iron oxide platelet particles according to claim 1, characterized in that the base used is KOH or NaOH.
3. The method for preparing the purple lustrous iron oxide platelet particles according to claim 1, characterized in that the alkali used and Fe (NO)3)3·9H2The molar ratio of O is (0.4-1): (0.03-0.1).
4. The method for preparing the purple lustrous iron oxide platelet particles according to claim 1, wherein the sufficient stirring is performed by mixing alkali and Fe (NO)3)3·9H2And O, stirring and mixing for 20-40 min.
5. The method for preparing the purple lustrous iron oxide flaky particles according to claim 1, characterized in that the thermal reaction is carried out by placing the slurry in a reaction kettle with a polytetrafluoroethylene lining, and the filling ratio of the reaction kettle is 85-90%.
6. The method for producing the purple lustrous iron oxide flaky particles according to any one of claims 1 to 5, characterized by further comprising an operation of post-treatment after the thermal reaction is completed:
and washing the obtained reactant until the pH value is 7.0-7.2, and then carrying out suction filtration and vacuum drying on the reactant to obtain the purple luster iron oxide flaky particles.
7. The purple lustrous iron oxide flake particles prepared by the preparation method of any one of claims 1 to 6, wherein the purple lustrous iron oxide flake particles are flaky, have smooth surfaces, have a diameter of 5 to 10 μm and a thickness of 1 to 1.5 μm, and are uniform in particle size distribution.
8. The purple lustrous iron oxide platelet particles of claim 7, wherein the purple lustrous iron oxide platelet particles have a light reflection effect when illuminated with light.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611300A (en) * | 2022-08-09 | 2023-01-17 | 南京大学 | Method for preparing hydrotalcite in one step without solvent |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987156A (en) * | 1969-11-13 | 1976-10-19 | Agency Of Industrial Science & Technology | Method for manufacture of micaceous α-iron oxide |
| US4006090A (en) * | 1974-06-28 | 1977-02-01 | The Dow Chemical Company | Alpha iron (III) oxide crystals and derivatives |
| JPH03131526A (en) * | 1989-10-13 | 1991-06-05 | Nippon Chem Ind Co Ltd | Alpha-iron oxide and production thereof |
| JPH04144923A (en) * | 1990-10-05 | 1992-05-19 | Nippon Chem Ind Co Ltd | Alpha-iron oxide having excellent metallic luster |
| JPH08325098A (en) * | 1995-05-26 | 1996-12-10 | Sakai Chem Ind Co Ltd | Particulate magnetite and its production |
| JP2004026621A (en) * | 2002-06-28 | 2004-01-29 | Chemi Light Kogyo Kk | Sheet-like iron oxyhydroxide, iron oxide, magnetite, and its manufacturing method |
| CN1944274A (en) * | 2006-10-24 | 2007-04-11 | 湘潭大学 | Method for preparing mica iron oxide by hydrothermal reaction and crystallizing |
| CN101913657A (en) * | 2010-08-18 | 2010-12-15 | 中南大学 | Preparation method of flake ferric oxide |
| CN108862399A (en) * | 2018-09-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of preparation method of monodispersed micron order hexagon oxidation iron plate |
| WO2020013488A1 (en) * | 2018-07-10 | 2020-01-16 | 주식회사 엘지화학 | Method for preparing iron oxide |
-
2021
- 2021-03-09 CN CN202110256518.1A patent/CN112919548B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987156A (en) * | 1969-11-13 | 1976-10-19 | Agency Of Industrial Science & Technology | Method for manufacture of micaceous α-iron oxide |
| US4006090A (en) * | 1974-06-28 | 1977-02-01 | The Dow Chemical Company | Alpha iron (III) oxide crystals and derivatives |
| JPH03131526A (en) * | 1989-10-13 | 1991-06-05 | Nippon Chem Ind Co Ltd | Alpha-iron oxide and production thereof |
| JPH04144923A (en) * | 1990-10-05 | 1992-05-19 | Nippon Chem Ind Co Ltd | Alpha-iron oxide having excellent metallic luster |
| JPH08325098A (en) * | 1995-05-26 | 1996-12-10 | Sakai Chem Ind Co Ltd | Particulate magnetite and its production |
| JP2004026621A (en) * | 2002-06-28 | 2004-01-29 | Chemi Light Kogyo Kk | Sheet-like iron oxyhydroxide, iron oxide, magnetite, and its manufacturing method |
| CN1944274A (en) * | 2006-10-24 | 2007-04-11 | 湘潭大学 | Method for preparing mica iron oxide by hydrothermal reaction and crystallizing |
| CN101913657A (en) * | 2010-08-18 | 2010-12-15 | 中南大学 | Preparation method of flake ferric oxide |
| WO2020013488A1 (en) * | 2018-07-10 | 2020-01-16 | 주식회사 엘지화학 | Method for preparing iron oxide |
| CN108862399A (en) * | 2018-09-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of preparation method of monodispersed micron order hexagon oxidation iron plate |
Non-Patent Citations (1)
| Title |
|---|
| JUN WANG等: "Optical Properties of Hydrothermally Synthesized Hematite Particulate Pigments" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611300A (en) * | 2022-08-09 | 2023-01-17 | 南京大学 | Method for preparing hydrotalcite in one step without solvent |
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