CN106277002A - A kind of method preparing nano aluminium oxide - Google Patents
A kind of method preparing nano aluminium oxide Download PDFInfo
- Publication number
- CN106277002A CN106277002A CN201610688345.XA CN201610688345A CN106277002A CN 106277002 A CN106277002 A CN 106277002A CN 201610688345 A CN201610688345 A CN 201610688345A CN 106277002 A CN106277002 A CN 106277002A
- Authority
- CN
- China
- Prior art keywords
- aluminium oxide
- aluminum nitrate
- nano aluminium
- ethanol solution
- method preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C01F7/308—Thermal decomposition of nitrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Abstract
The invention discloses a kind of method preparing nano aluminium oxide, including step: (1) solution allocation: dissolved by aluminum nitrate with water, then with ethanol dilution, be configured to aluminum nitrate ethanol solution；(2) high temperature evaporation: at a temperature of 200 DEG C～300 DEG C, described aluminum nitrate ethanol solution is carried out high temperature evaporation, the temperature evaporated by regulation, to generate alumina crystal；(3) precipitation separation: promote nano aluminium oxide Crystallization Separation to precipitate by adding precipitant；(4) recycle: described nano oxidized crystalline aluminophosphate is recycled.Raw material sources of the present invention are wide, and technique is simple, and manufacturing cycle is short, and efficiency is high, low cost, the nano oxidized aluminium particle size of generation and being evenly distributed, and can produce in enormous quantities.
Description
Technical field
The present invention relates to field of nanometer material technology, particularly relate to a kind of method preparing nano aluminium oxide.
Background technology
Nano material has been widely recognized as catalyst or catalyst carrier.Owing to aluminium oxide has stronger
The excellent properties such as mechanical strength and good heat stability, be widely used in oil chemical industry, may be used for reformation, isomerization,
The processes such as hydrogenation, dehydrogenation, desulphurization and denitration.Aluminium oxide is prepared as nano-powder, can increase considerably specific surface area, and
There are abundant mismatch key and oxygen debt key in grain surface, and the performance of the catalyst made with this and catalyst carrier is than conventional aluminium oxide
Properties of product are superior.Generally, the catalyst of industrial use is all large batch of, stay-in-grade, therefore it is required that preparation
The method of nano aluminium oxide can be produced in enormous quantities, yardstick is controlled, and cost can not be the highest simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of method preparing nano aluminium oxide, can produce in enormous quantities, yardstick controlled,
Cost is relatively low simultaneously.
The technical scheme is that a kind of method preparing nano aluminium oxide, comprise the following steps:
(1) solution allocation: dissolved by aluminum nitrate with water, then with ethanol dilution, is configured to aluminum nitrate ethanol solution；
(2) high temperature evaporation: at a temperature of 200 DEG C～300 DEG C, described aluminum nitrate ethanol solution is carried out high temperature evaporation is logical
Overregulate the temperature of evaporation, to generate alumina crystal；
(3) precipitation separation: promote nano aluminium oxide Crystallization Separation to precipitate by adding precipitant；
(4) recycle: described nano oxidized crystalline aluminophosphate is recycled.
And, the percent by volume of water described in step (1) is not more than 25%, the concentration model of described aluminum nitrate ethanol solution
Enclose for 0.1mol/L～3mol/L；The granularity of the nano oxidized crystalline aluminophosphate ultimately generated is 20nm～70nm.
The present invention compared with prior art, has the following advantages and effect:
(1) raw material sources are wide, and technique is simple, and manufacturing cycle is short, and efficiency is high, low cost.
(2) the nano oxidized aluminium particle size that generates and being evenly distributed.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.
As it is shown in figure 1, a kind of method preparing nano aluminium oxide, comprise the following steps:
(1) solution allocation: dissolved by aluminum nitrate with water, then with ethanol dilution, is configured to aluminum nitrate ethanol solution；
(2) high temperature evaporation: at a temperature of 200 DEG C～300 DEG C, described aluminum nitrate ethanol solution is carried out high temperature evaporation is logical
Overregulate the temperature of evaporation, to generate alumina crystal；
(3) precipitation separation: promote nano aluminium oxide Crystallization Separation to precipitate by adding precipitant；
(4) recycle: described nano oxidized crystalline aluminophosphate is recycled.
And, the percent by volume of water described in step (1) is not more than 25%, the concentration model of described aluminum nitrate ethanol solution
Enclose for 0.1mol/L～3mol/L；The granularity of the nano oxidized crystalline aluminophosphate ultimately generated is 20nm～70nm.
Embodiment 1
The percent by volume of water is 15%, is configured to the aluminum nitrate ethanol solution that concentration is 3mol/L；By described aluminum nitrate
Ethanol solution is evaporated with the initial temperature of 200 DEG C, and heats up with the programming rate of 50 DEG C/h, reaches 300 DEG C of constant temperature certain
Time, generating alumina crystal, its granularity is 20nm～50nm；Nano aluminium oxide Crystallization Separation is promoted to sink by adding precipitant
Recycle behind shallow lake.
Embodiment 2
The percent by volume of water is 15%, is configured to the aluminum nitrate ethanol solution that concentration is 2mol/L；By described aluminum nitrate
Ethanol solution is evaporated with the initial temperature of 200 DEG C, and heats up with the programming rate of 60 DEG C/h, reaches 300 DEG C of constant temperature certain
Time, generating alumina crystal, its granularity is 30nm～60nm；Nano aluminium oxide Crystallization Separation is promoted to sink by adding precipitant
Recycle behind shallow lake.
Embodiment 3
The percent by volume of water is 25%, is configured to the aluminum nitrate ethanol solution that concentration is 0.1mol/L；By described nitric acid
Aluminum ethanol solution is evaporated with the initial temperature of 200 DEG C, and heats up with the programming rate of 80 DEG C/h, reaches 300 DEG C of constant temperature one
Fixing time, generate alumina crystal, its granularity is 40nm～70nm；Nano aluminium oxide Crystallization Separation is promoted by adding precipitant
Recycle after precipitation.
The foregoing is only the preferable possible embodiments of the present invention, and be not used to limit to the scope of the claims of the present invention, thus all
The equivalence using description of the invention to be made is changed or change, is all contained in protection scope of the present invention.
Claims (3)
1. the method preparing nano aluminium oxide, it is characterised in that described method comprises the following steps:
(1) solution allocation: dissolved by aluminum nitrate with water, then with ethanol dilution, is configured to aluminum nitrate ethanol solution；
(2) high temperature evaporation: described aluminum nitrate ethanol solution is evaporated at a temperature of 200 DEG C～300 DEG C, is steamed by regulation
The temperature sent out, generates alumina crystal；
(3) precipitation separation: promote nano aluminium oxide Crystallization Separation to precipitate by adding precipitant；
(4) recycle: described nano oxidized crystalline aluminophosphate is recycled.
The method preparing nano aluminium oxide the most according to claim 1, the percent by volume of wherein said water is not more than
25%, the concentration range of described aluminum nitrate ethanol solution is 0.1mol/L～3mol/L.
The method preparing nano aluminium oxide the most according to claim 1, the granularity of wherein said nano oxidized crystalline aluminophosphate is
20nm～70nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688345.XA CN106277002A (en) | 2016-08-18 | 2016-08-18 | A kind of method preparing nano aluminium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688345.XA CN106277002A (en) | 2016-08-18 | 2016-08-18 | A kind of method preparing nano aluminium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106277002A true CN106277002A (en) | 2017-01-04 |
Family
ID=57660669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610688345.XA Pending CN106277002A (en) | 2016-08-18 | 2016-08-18 | A kind of method preparing nano aluminium oxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776828A (en) * | 2019-02-15 | 2019-05-21 | 哈尔滨理工大学 | A kind of aluminum oxide nanoparticle/polyimides base energy storage medium and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550452A (en) * | 2003-05-19 | 2004-12-01 | ס�ѻ�ѧ��ҵ��ʽ���� | Preparation of alpha alumina powder |
| CN101045543A (en) * | 2007-05-08 | 2007-10-03 | 浙江大学 | Method for preparing sheet alumina using coal series kaolin rock or flyash as raw material |
| JP2015083532A (en) * | 2013-09-19 | 2015-04-30 | 太平洋セメント株式会社 | Micro hollow alumina particle |
-
2016
- 2016-08-18 CN CN201610688345.XA patent/CN106277002A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550452A (en) * | 2003-05-19 | 2004-12-01 | ס�ѻ�ѧ��ҵ��ʽ���� | Preparation of alpha alumina powder |
| CN101045543A (en) * | 2007-05-08 | 2007-10-03 | 浙江大学 | Method for preparing sheet alumina using coal series kaolin rock or flyash as raw material |
| JP2015083532A (en) * | 2013-09-19 | 2015-04-30 | 太平洋セメント株式会社 | Micro hollow alumina particle |
Non-Patent Citations (1)
| Title |
|---|
| 韩长日: "《使用化学品配方手册-小化工产品试产技术指南》", 31 May 1996 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776828A (en) * | 2019-02-15 | 2019-05-21 | 哈尔滨理工大学 | A kind of aluminum oxide nanoparticle/polyimides base energy storage medium and preparation method thereof |
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Application publication date: 20170104 |
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