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Preparation method of nano manganese oxide

An oxide and nanomanganese technology, applied in nanotechnology, manganese oxide/manganese hydroxide and other directions, can solve the problems of complex process equipment, high energy consumption, and high reaction temperature, and achieve common and easy availability of raw materials, low energy consumption, and high production efficiency. The effect of simple process flow

Inactive Publication Date: 2013-02-06
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main method for preparing manganese powder in industry is to calcinate various manganese hydroxides, nitrates, sulfates, carbonates, etc. at high temperature. This method requires high reaction temperature and high energy consumption. The particles of the manganese oxide powder are coarse; there is another method is the metal Mn method, also known as the electrolytic metal manganese suspension oxidation method or the electrolytic metal manganese corrosion method, which uses electrolytic metal manganese flakes as raw materials, and the process and equipment of this method are complicated. , the energy consumption required for the reaction is high, the production cost is relatively expensive, and the particle size and distribution of the product manganese oxide are also difficult to control

Method used

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  • Preparation method of nano manganese oxide

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Effect test

Embodiment 1

[0022] Weigh manganese acetate (Mn(CH 3 COO) 2 4H 2 O, AR, molecular weight (245.10), 24.5 g (0.1 mol), dissolved in 62 g of deionized water to form a 20% manganese acetate solution, heated to 40°C in a water bath, to which 8.81 g of ascorbic acid granules were added (0.05 mol), stirred to dissolve in manganese acetate solution, denoted as A1.

[0023] Raise the temperature of the water bath to 50° C., and place A1 there for 8 hours to form B1.

[0024] Put B1 into an oven, bake at 110°C for 4 hours, put it into a muffle furnace, and bake at 320°C for 4 hours to form C1. C1 was analyzed and tested by SEM, and the results of crystal form and particle size are shown in Table 1.

Embodiment 2

[0026] Weigh manganese acetate (Mn(CH 3 COO) 2 4H 2 O, AR) 24.5 g (0.1 mol), which was dissolved in 62 g of deionized water to form a 20% manganese acetate solution, heated to 40°C in a water bath, to which 52.8 g of ascorbic acid particles (0.3 mol) were added, Stir to dissolve it in the manganese acetate solution, denoted as A2.

[0027] Raise the temperature of the water bath to 60°C, and place A2 there for 8 hours to form B2.

[0028] Put B2 into an oven, bake at 110°C for 4 hours, put it into a muffle furnace, and bake at 350°C for 2 hours to form C2. C2 was analyzed and tested by SEM, and the results of crystal form and particle size are shown in Table 1.

Embodiment 3

[0030] Weigh manganese acetate (Mn(CH 3 COO) 2 4H 2 O, AR) 24.5 g (0.1 mol) was dissolved in 62 g of deionized water to form a 20% manganese acetate solution, and after heating to 40 °C in a water bath, 35.2 g of ascorbic acid particles (0.2 mol) were added to it, Stir to dissolve it in the manganese acetate solution, denoted as A3.

[0031] Raise the temperature of the water bath to 50° C., and place A3 there for 8 hours to form B3.

[0032] Put B3 into an oven, bake at 110°C for 4 hours, put it into a muffle furnace, and bake at 450°C for 4 hours to form C3. The C3 was analyzed and tested by SEM, and the results of crystal form and particle size are shown in Table 1.

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Abstract

The invention discloses a preparation method of nano manganese oxide. The method comprises the following steps: ascorbic acid is added into acetum, and then the nano manganese oxide is obtained after the ascorbic acid and the acetum are stirred, mixed to be uniform, dried and roasted; the concentration of manganese acetate solution is 20 to 50 percent, the mol ratio of the ascorbic acid to manganese is (0.5 to 3):1, the stirring temperature is 40 to 80 DEG C, and vaporizing solvent is kept within the temperature range; the drying temperature is 110 DEG C; and the roasting temperature is 320 to 450 DEG C, and the roasting time is 2 to 10 hours. The method has the advantages that the production process flow is simple, material is common and easily available, and the particle size of obtained manganese oxide powder is smaller than 100nm.

Description

technical field [0001] The invention relates to a preparation method of manganese oxide. Background technique [0002] Manganese materials are widely used in the field of electronic energy. For example, Mn 3 o 4 The powder and the manganese zinc ferrite soft magnetic material prepared from it are used in the electronics industry; the catalyst with manganese as the main active component can be used to reduce nitrogen oxides, nitro compounds and eliminate carbon monoxide. The main method for preparing manganese powder in industry is to calcinate various manganese hydroxides, nitrates, sulfates, carbonates, etc. at high temperature. This method requires high reaction temperature and high energy consumption. The particles of the manganese oxide powder are coarse; there is another method is the metal Mn method, also known as the electrolytic metal manganese suspension oxidation method or the electrolytic metal manganese corrosion method, which uses electrolytic metal manganese...

Claims

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Application Information

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IPC IPC(8): C01G45/02B82Y40/00
Inventor 王翀丁纯梅唐定兴
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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