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An "almond-shaped" mn 2 o 3 Preparation method of /c particles

An almond and particle technology, which is applied in the field of preparation of Mn2O3/C particles, can solve the problems of small specific surface area and low conductivity of manganese trioxide, and achieve the effects of wide source, high repeatability and environmental friendliness.

Active Publication Date: 2020-11-06
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, manganese trioxide has attracted more and more attention as a new carrier for electrochemical catalytic reactions. However, due to the shortcomings of manganese trioxide itself, such as low conductivity and small specific surface area, its application is limited.

Method used

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  • An "almond-shaped" mn <sub>2</sub> o <sub>3</sub> Preparation method of /c particles
  • An "almond-shaped" mn <sub>2</sub> o <sub>3</sub> Preparation method of /c particles

Examples

Experimental program
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Effect test

Embodiment 1

[0021] An "almond-shaped" Mn 2 o 3 The preparation method of / C particles, the specific operation steps are as follows:

[0022] (1) Measure 38 milliliters of potassium permanganate aqueous solutions with a concentration of 0.050 mol / liter with a graduated cylinder, which contains 0.0019 moles of potassium permanganate, and pour it into a 100-ml beaker for magnetic stirring; weigh 0.60 grams (0.0033 moles) ) Glucose powder, join in potassium permanganate solution, continue to stir, obtain the mixed solution of potassium permanganate and glucose; Measure the glycerol (being 0.0042 mole) of 3.00 milliliters with pipette, add dropwise to above-mentioned In the mixed solution of potassium permanganate and glucose, the stirring was continued for 1 hour to obtain the total mixed solution;

[0023] (2) Transfer the total mixed solution of step (1) gained into a 50 ml polytetrafluoroethylene hydrothermal kettle, seal the hydrothermal kettle shell and carry out hydrothermal reaction,...

Embodiment 2

[0027] An "almond-shaped" Mn 2 o 3 The preparation method of / C particles, the specific operation steps are as follows:

[0028] (1) Measure 38 milliliters of manganese acetate aqueous solution that concentration is 0.050 mol / liter with graduated cylinder, promptly contain the manganese acetate of 0.0019 mole, pour in the beaker of 100 milliliters magnetic stirring; Weigh 0.6 gram (0.0064 mole) aniline powder, Add in the manganese acetate solution, continue to stir, obtain the mixed solution of manganese acetate and aniline; Measure the 1-methylimidazole (being 0.039 mole) of 3.0 milliliters with pipette, add dropwise to above-mentioned manganese acetate and aniline In the mixed solution, stirring was continued for 1 hour to obtain a total mixed solution;

[0029] (2) Transfer the total mixed solution of step (1) gained into 50 milliliters of polytetrafluoroethylene hydrothermal kettle, seal the hydrothermal kettle shell tightly and carry out hydrothermal reaction, hydrother...

Embodiment 3

[0033] An "almond-shaped" Mn 2 o 3 The preparation method of / C particles, the specific operation steps are as follows:

[0034] (1) Use a graduated cylinder to measure 38 ml of manganese nitrate aqueous solution with a concentration of 0.050 mol / liter, which contains 0.0019 mol of manganese nitrate, and pour it into a 100 ml beaker for magnetic stirring; weigh 0.6 g (0.0055 mol) of phenylenediamine Powder, join in the manganese nitrate solution, continue to stir, obtain the mixed solution of manganese nitrate and phenylenediamine; Measure the ethylenediamine (being 0.05 mole) of 3.0 milliliters with pipette, add dropwise to above-mentioned manganese nitrate and phenylenediamine In the mixed solution of phenylenediamine, keep stirring 1 hour, obtain total mixed solution;

[0035](2) Transfer the total mixed solution of step (1) gained in 50 milliliters of polytetrafluoroethylene hydrothermal kettle, seal the hydrothermal kettle shell tightly and carry out hydrothermal reacti...

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Abstract

The invention discloses a preparation method of an "almond-like" Mn2O3 / C particle. The preparation method includes the following steps: 1) dissolving manganese salt to prepare a manganese salt solution, adding a carbon source and a complexing agent to prepare a mixture solution, wherein molar ratio of the manganese salt, the carbon source to the complexing agent is 0.24-1.8:1:1.27-10.94; 2) performing a hydrothermal reaction, reaction temperature being 130-180 DEG C and reaction time being 15-30 h, and cooling the reaction system to prepare a hydrothermal product; 3) filtering, washing, drying and grinding the hydrothermal product to prepare dried powder; 4) calcining and cooling the dried powder to obtain the product. In the method, the manganese salt, the carbon source and the complexing agent are mixed, and then a Mn2O3 / C precursor is prepared through the hydrothermal method, and finally, the "almond-like" Mn2O3 / C particle is prepared through high temperature calcination. The preparation method is simple and has good repeatability and is low in raw material cost and wide in raw material source. In addition, the final product is a composite of metal oxide and carbon, has no toxicity and is environment-friendly.

Description

technical field [0001] The present invention relates to a kind of Mn 2 o 3 / C particle preparation method, in particular to a kind of "almond-shaped" Mn 2 o 3 / C Particle Preparation Method. Background technique [0002] Dimanganese trioxide is widely used in various catalytic oxidation reactions, such as the oxidation of CO gas, the catalytic combustion of methane gas, and in the field of water treatment as a catalyst to degrade organic matter in wastewater. Moreover, it has become a trend in the research of nanomaterials to influence the properties of materials through the control of morphology and structure. In recent years, manganese trioxide has attracted more and more attention as a new carrier for electrochemical catalytic reactions. However, due to the shortcomings of manganese trioxide itself, such as low conductivity and small specific surface area, its application is limited. Therefore, improving the conductivity and specific surface area of ​​manganese triox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34C01G45/02
CPCB01J23/34B01J35/0033B01J35/026B01J37/082B01J37/10C01G45/02C01P2002/72C01P2004/03C01P2004/61
Inventor 沈培康尹诗斌王鹏文颖朱鹏程陆家佳
Owner GUANGXI UNIV