CN1147432C - Prepn of active manganese dioxide - Google Patents
Prepn of active manganese dioxideInfo
- Publication number
- CN1147432C CN1147432C CNB021156492A CN02115649A CN1147432C CN 1147432 C CN1147432 C CN 1147432C CN B021156492 A CNB021156492 A CN B021156492A CN 02115649 A CN02115649 A CN 02115649A CN 1147432 C CN1147432 C CN 1147432C
- Authority
- CN
- China
- Prior art keywords
- permanganate
- manganese dioxide
- carboxylic acid
- aromatic carboxylic
- manganese salt
- 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.)
- Expired - Fee Related
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- Inorganic Compounds Of Heavy Metals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention discloses a novel method for preparing active manganese dioxide, which adopts the raw materials of the manganese salt of aromatic carboxylic acid and a permanganate. With the adoption of a rheological phase reaction method, the manganese dioxide with good flowability, easy dispersion, large specific surface area and high activity is prepared by selecting the kind of the manganese salt of the aromatic carboxylic acid and controlling the proportion of the manganese salt to the permanganate and the conditions of the use amount of water, reaction temperature, etc., and the particle size of the manganese dioxide is from 10 nm to 300 nm. The product of the present invention can be used as the positive material of a disposable cell and a secondary cell, and the product can also be used in other fields.
Description
Technical field
The present invention relates to a kind of method for preparing Manganse Dioxide, specifically a kind of method for preparing ultramicro active Manganse Dioxide belongs to inorganic new material technology field.
Background technology
Activated manganese dioxide can be used for once the positive electrode material with secondary cell, also can be used for electrochemistry and photochemically reactive catalyzer, can also be used for other industrial circles.
According to bibliographical information, the existing method for preparing Manganse Dioxide mainly contains following several: 1, by preparing Manganse Dioxide by liquid phase reaction in mineral acid manganese salt and potassium permanganate (sodium) medium; 2,, adopt liquid phase or gel sol method to prepare Manganse Dioxide [Hui Cao, Steven L Suib by organic acid or the organic acid manganese salt (non-fragrant manganese carboxylate salt) and potassium permanganate (sodium) aqueous solution, J.Am.Chem.Soc., 1994,110,5334, H.P.Stadniychuk, M.A.Anderson, T.W.Chapman, J.Electrochem.Soc., 1996,143 (5): 1629]; 3, in acidity, alkalescence and neutral medium, potassium permanganate, sodium reduction are prepared Manganse Dioxide [Li Yadong, Li Chengwei, Li Longquan, SCI, 1997,18 (9): 1436]; 4, the hydrogen oxide manganese oxide prepares Manganse Dioxide [Moore W G.US Patent, 3414440,1965]; 5, thermal decomposition method prepares Manganse Dioxide [Jpn Patent, 81164017,1981].
Summary of the invention
For easy, quick and a large amount of high reactivity Manganse Dioxide that obtain, the invention provides a kind of new preparation method.This method mild condition, technological process is simple, products obtained therefrom purity height, good fluidity, good dispersity.
For realizing that the technical measures that purpose of the present invention is taked are:
A kind of method for preparing activated manganese dioxide: with aromatic carboxylic acid manganese salt and permanganate is that 1: 2.5～1: 0.5 ratio ground and mixed is even in molar ratio, the water (weight ratio) that in said mixture, adds 0.5～1.5 times then, stir into rheology phase (being the non-solid state of non-liquid) gently, room temperature to 100 ℃ following standing and reacting 5～120 minutes, after adding deionized water and stirring, filter, with deionized water or organic solvent washing, be drying to obtain activated manganese dioxide.
According to technical scheme of the present invention, described aromatic carboxylic acid manganese salt is monobasic or poly-basic aromatic carboxylic acid manganese salt.
According to technical scheme of the present invention, described permanganate is potassium permanganate or sodium permanganate.
According to technical scheme of the present invention, described organic solvent is easy volatile organic solvents such as ethanol, ether or acetone.
According to technical scheme of the present invention, drying temperature is a room temperature to 500 ℃.Be no more than 10 hours time of drying.
Compared with prior art, the beneficial effect that adopts technical scheme of the present invention and reached:
Preparation method's technological process of the present invention is simple, mild condition, and raw material sources are abundant, convenient, and byproduct of reaction is recyclable, and preparation process is pollution-free, is suitable for suitability for industrialized production.Big 100～the 300m of product specific surface area
2/ g, active high, good fluidity, easily disperse, granularity is suitable for once the positive electrode material with secondary cell between 10～300nm, also can be used for electrochemistry and photochemically reactive catalyzer, can also be used for other industrial circles, therefore, technology of the present invention has important application prospects at battery, chemical catalysis and other industrial circle.
Embodiment
Embodiment 1:
Take by weighing 2.5 gram manganese benzoates and 0.9 gram potassium permanganate, fully after the grinding, add the 5mL deionized water, stir the back and reacted 30 minutes down in 60 ℃.Add proper amount of deionized water and stir after-filtration, with 50 ℃ of deionized water wash 3 times, wash once with dehydrated alcohol again after, in 120 ℃ of oven dry, obtaining particle is that 30nm, specific surface area are 140m
2The Manganse Dioxide of/g.
Embodiment 2:
Take by weighing 2.1 gram phthalic acid manganese and 3.14 gram sodium permanganates, fully after the grinding, add the 4.2mL deionized water, stir the back and reacted 70 minutes down in 90 ℃.Add proper amount of deionized water and stir after-filtration, behind 70 ℃ of deionized water wash 3 times, in 120 ℃ of oven dry, obtaining particle is that 200nm, specific surface area are 110m
2The Manganse Dioxide of/g.
Claims (2)
1. method for preparing activated manganese dioxide, it is characterized in that: with aromatic carboxylic acid manganese salt and permanganate is that 1: 2.5～1: 0.5 ratio ground and mixed is even in molar ratio, the water that in said mixture, adds 0.5～1.5 times of weight then, stir into the rheology phase gently, room temperature to 100 ℃ following standing and reacting 5～120 minutes, after adding deionized water and stirring, filter, with deionized water or organic solvent washing, be drying to obtain activated manganese dioxide, described aromatic carboxylic acid manganese salt is monobasic or poly-basic aromatic carboxylic acid manganese salt, and described permanganate is potassium permanganate or sodium permanganate.
2. preparation method according to claim 1 is characterized in that: described organic solvent is ethanol, ether or acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021156492A CN1147432C (en) | 2002-03-29 | 2002-03-29 | Prepn of active manganese dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021156492A CN1147432C (en) | 2002-03-29 | 2002-03-29 | Prepn of active manganese dioxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1370744A CN1370744A (en) | 2002-09-25 |
| CN1147432C true CN1147432C (en) | 2004-04-28 |
Family
ID=4743782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021156492A Expired - Fee Related CN1147432C (en) | 2002-03-29 | 2002-03-29 | Prepn of active manganese dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147432C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239311B (en) * | 2002-12-23 | 2011-07-27 | 科学与工业研究委员会 | Method for converting cyanopyridine compounds into niacinamide compounds, its catalyst and the catalyst preparation |
| CN1295154C (en) * | 2005-03-11 | 2007-01-17 | 华南师范大学 | Prepn process of amorphous manganese dioxide |
| CN106082347A (en) * | 2016-06-21 | 2016-11-09 | 苏州帝瀚环保科技股份有限公司 | The preparation method of manganese dioxide |
| CN111410232B (en) * | 2020-04-26 | 2022-12-02 | 张韩生 | Preparation method of manganese dioxide positive electrode material |
-
2002
- 2002-03-29 CN CNB021156492A patent/CN1147432C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1370744A (en) | 2002-09-25 |
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