CN103663514A - Preparation method of hydrotalcite - Google Patents
Preparation method of hydrotalcite Download PDFInfo
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- CN103663514A CN103663514A CN201210328678.3A CN201210328678A CN103663514A CN 103663514 A CN103663514 A CN 103663514A CN 201210328678 A CN201210328678 A CN 201210328678A CN 103663514 A CN103663514 A CN 103663514A
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- Prior art keywords
- hydrotalcite
- preparation
- compound
- metal compound
- trivalent metal
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Abstract
The invention discloses a preparation method of hydrotalcite. The preparation method comprises the following steps: preparing a solution by using a proper amount of NaOH and Na2CO3; then, adding a divalent metal compound and a trivalent metal compound into the solution, stirring and heating, ageing, filtering, washing and drying to obtain the product hydrotalcite. The preparation method of the hydrotalcite adopts cheap and easily available materials, is simple and easily-controllable in process, short in preparation period, low in production cost, less in energy consumption, environmental friendly and high in product purity, and therefore, the preparation method has good application prospect.
Description
Technical field
The invention belongs to field of fine chemical, relate to a kind of preparation method of hydrotalcite.
Background technology
Hydrotalcite is an anionoid lamellar compound, and its similar is in montmorillonite.There is interchangeability acid and alkalescence, memory effect, microvoid structure and interlayer anion.It forms general formula: M
2+ 1-xm
3+ x(OH)
2(A
n-)
x/nmH
2o is M wherein
2+, M
3+for metallic cation, as M
2+=Mg
2+, Ni
2+, Co
2+, Zn
2+, Cu
2+deng, M
3+=Al
3+, Cr
3+, Fe
3+, Sc
3+deng, A
n-for interlayer anion
[9], as CO
3 2-, NO
- 3, Cl
-, OH
-, SO
4 2-, PO
4 3-, C
6h
4(COO
-)
2etc. inorganic or organic anion.Different M
2+and M
3+, different interstitial anion A
n-just can form different houghites.Because such material has unique negatively charged ion stratiform structure and laminate positively charged ion collocation property and unique negatively charged ion interchangeability, therefore, by metal ion and the negatively charged ion of modulation, realize unit assembling variation.May be under certain condition, some functional species can overcome lamellar compound reactive force between layers can insert bedding void, thereby modulation structural parameter and character on a large scale, as interlamellar spacing, layer charge density, etc., derive a lot of colorful performance and functions, meet the design requirements of some functional materialss.Therefore, hydrotalcite material is widely used in the fields such as absorption, catalysis, ion-exchange as a class exotic materials, in these years, along with the research more deeply to this class material, opened up again its application at aspects such as coating, medicine, functional high molecule material, agricultural chemicals, oil-field developments.Hydrotalcite mainly makes by salt and oxide compound reaction, salt and alkali reaction and ion exchange reaction.At present, common synthetic method has coprecipitation method, nucleation/crystallization isolation method, sol-gel method, hydrothermal method, electrosynthesis, ion exchange method, roasting composite oxides restoring method etc.Coprecipitation method size distribution is wider, and homogeneity is poor, complicated operation and length consuming time; Nucleation/crystallization isolation method is high to equipment requirements, complex process; Sol-gel method expensive raw material price and the more difficult control of hydrolysis.Hydrothermal method, electrosynthesis output are less, are not suitable for scale operation; Ion exchange method complex process, length consuming time; Roasting composite oxides restoring method needs high-temperature calcination, law of investment complex process.
Summary of the invention
For solving above-mentioned problems of the prior art, the object of the invention is to substantially overcome existing hydrotalcite preparation method's defect, provide a kind of technique simple, the hydrotalcite preparation method that equipment requirements is low.
The present invention realizes the technical scheme that its object is taked: a kind of preparation method of hydrotalcite, gets appropriate NaOH, Na
2cO
3configuration solution, then adds bivalent metallic compound and trivalent metal compound wherein, stirring heating, and ageing, filters, washs, dry, can obtain product water talcum.
The NaOH-Na telling
2cO
3configuration pH is 9-10.
Described bivalent metallic compound and trivalent metal compound mol ratio are 1-5:1.
Described bivalent metallic compound is Mg
2+water-soluble compound.
Described bivalent metallic compound is MgSO
412H
2o.
Described trivalent metal compound is Al
3+water-soluble compound.
Described trivalent metal compound is Al
2(SO
4)
318H
2o.
beneficial effect of the present invention:the prices of raw and semifnished materials that the present invention adopts are cheap, be easy to get, the succinct easily control of technique, and preparation cycle is short, and production cost is low, and less energy consumption is environmentally friendly, and product purity is high, therefore has good application prospect.
Accompanying drawing explanation
Fig. 1 is the hydrotalcite scanning electron microscope (SEM) photograph of the embodiment of the present invention 1;
Fig. 2 is the hydrotalcite scanning electron microscope (SEM) photograph of the embodiment of the present invention 2;
Fig. 3 is the hydrotalcite scanning electron microscope (SEM) photograph of the embodiment of the present invention 3;
Fig. 4 is the hydrotalcite scanning electron microscope (SEM) photograph of the embodiment of the present invention 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
Get appropriate NaOH-Na
2cO
3in beaker, add distilled water to be uniformly dissolved, be configured to pH value and be 9 solution; Then the MgSO that is 6:1 by mol ratio
412H
2o and Al
2(SO
4)
318H
2o shakes and all puts into solution after mixing; Heated and stirred 6h in 50 ℃ of waters bath with thermostatic control; Ageing 2h after reaction; Cooling, filter, wash, dry, obtain required hydrotalcite.
Embodiment 2
Get appropriate NaOH-Na
2cO
3in beaker, add distilled water to be uniformly dissolved, be configured to pH value and be 9 solution; Then the MgSO that is 4:1 by mol ratio
412H
2o and Al
2(SO
4)
318H
2o shakes and all puts into solution after mixing; Heated and stirred 6h in 50 ℃ of waters bath with thermostatic control; Ageing 2h after reaction; Cooling, filter, wash, dry, obtain required hydrotalcite.
Embodiment 3
Get appropriate NaOH-Na
2cO
3in beaker, add distilled water to be uniformly dissolved, be configured to pH value and be 10 solution; Then the MgSO that is 6:1 by mol ratio
4and Al
2(SO
4)
3after mixing, shake and all put into solution; Heated and stirred 6h in 50 ℃ of waters bath with thermostatic control; Ageing 2h after reaction; Cooling, filter, wash, dry, obtain required hydrotalcite.
Embodiment 4
Get appropriate NaOH-Na
2cO
3in beaker, add distilled water to be uniformly dissolved, be configured to pH value and be 10 solution; Then the MgSO that is 4:1 by mol ratio
4and Al
2(SO
4)
3after mixing, shake and all put into solution; Heated and stirred 6h in 50 ℃ of waters bath with thermostatic control; Ageing 2h after reaction; Cooling, filter, wash, dry, obtain required hydrotalcite.
Claims (7)
1. a preparation method for hydrotalcite, is characterized in that: get appropriate NaOH, Na
2cO
3configuration solution, then adds bivalent metallic compound and trivalent metal compound wherein, stirring heating, and ageing, filters, washs, dry, can obtain product water talcum.
2. hydrotalcite preparation method according to claim 1, is characterized in that: described NaOH, Na
2cO
3configuration pH is 9-10.
3. hydrotalcite preparation method according to claim 1, is characterized in that: described bivalent metallic compound and trivalent metal compound mol ratio are 1-5:1.
4. hydrotalcite preparation method according to claim 1, is characterized in that: described bivalent metallic compound is Mg
2+water-soluble compound.
5. hydrotalcite preparation method according to claim 1, is characterized in that: described bivalent metallic compound is MgSO
412H
2o.
6. hydrotalcite preparation method according to claim 1, is characterized in that: described trivalent metal compound is Al
3+water-soluble compound.
7. hydrotalcite preparation method according to claim 1, is characterized in that: described trivalent metal compound is Al
2(SO
4)
318H
2o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328678.3A CN103663514A (en) | 2012-09-07 | 2012-09-07 | Preparation method of hydrotalcite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328678.3A CN103663514A (en) | 2012-09-07 | 2012-09-07 | Preparation method of hydrotalcite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103663514A true CN103663514A (en) | 2014-03-26 |
Family
ID=50302421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210328678.3A Pending CN103663514A (en) | 2012-09-07 | 2012-09-07 | Preparation method of hydrotalcite |
Country Status (1)
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338524A (en) * | 2013-08-06 | 2015-02-11 | 中国石油大学(北京) | Lubricating oil basic oil raw material esterification deacidification catalyst and application thereof |
| CN110316770A (en) * | 2019-07-28 | 2019-10-11 | 福建工程学院 | A kind of preparation and its application of small size, bigger serface carbonate intercalated houghite |
| CN111606338A (en) * | 2020-05-26 | 2020-09-01 | 陈豫镇 | Clean production preparation method of hydrotalcite for plastic processing |
-
2012
- 2012-09-07 CN CN201210328678.3A patent/CN103663514A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338524A (en) * | 2013-08-06 | 2015-02-11 | 中国石油大学(北京) | Lubricating oil basic oil raw material esterification deacidification catalyst and application thereof |
| CN104338524B (en) * | 2013-08-06 | 2016-12-28 | 中国石油大学(北京) | A kind of Lube basic oil material feedstocks esterification deacidification catalyst and application thereof |
| CN110316770A (en) * | 2019-07-28 | 2019-10-11 | 福建工程学院 | A kind of preparation and its application of small size, bigger serface carbonate intercalated houghite |
| CN110316770B (en) * | 2019-07-28 | 2022-03-15 | 福建工程学院 | Preparation and application of small-size and large-specific-surface-area carbonate intercalated hydrotalcite |
| CN111606338A (en) * | 2020-05-26 | 2020-09-01 | 陈豫镇 | Clean production preparation method of hydrotalcite for plastic processing |
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Application publication date: 20140326 |