Catalyzer Manganese Monoxide (Manganese Oxide)
Chemical Parameters:
| NO. |
Technological Specification |
Standard Grade |
| 1 |
MnO |
% |
≥99.5;≥99.9% |
| 2 |
Mn |
% |
≥77 |
| 3 |
H2O |
% |
≤0.1 |
| 4 |
Ca |
% |
≤0.02 |
| 5 |
S |
% |
≤0.025 |
| 6 |
Mg |
% |
≤0.02 |
| 7 |
Na |
% |
≤0.02 |
| 8 |
Si |
% |
≤0.002 |
| 9 |
Pb |
% |
≤0.005 |
| 10 |
Cd |
% |
≤0.005 |
| 11 |
As |
% |
≤0.005 |
| 12 |
Fe |
% |
≤0.025 |
The differences between manganese monoxide (MnO) and manganese dioxide (MnO ₂) in raw materials, production processes, and application fields:
1, Comparison of raw materials
1. Manganese monoxide
Main source: Using pyroxene ore (mainly composed of MnO ₂) as raw material, 3 is prepared by reduction roasting process.
Other raw materials: Electrolytic manganese metal sheets are oxidized at high temperatures to produce high-purity MnO2.
2. Manganese dioxide
Natural source: Direct mining of pyroxene (MnO ₂) or rhodochrosite (MnCO3), followed by beneficiation and processing purification.
Synthetic raw materials: manganese sulfate solution (electrolytic method), manganese salt solution (wet oxidation), etc.
2, Comparison of production processes
1. Manganese monoxide
Reduction roasting method:
Manganese ore and coal powder are mixed in proportion and roasted at 800 ℃ for 4 hours to produce MnO3.
High purity preparation process:
After the electrolytic manganese flakes are crushed, they are calcined in CO ₂ and H ₂ atmospheres, and then cooled and ground to obtain high-purity MnO2.
2. Manganese dioxide
Electrolysis method:
Electrolysis of manganese sulfate solution results in the precipitation of MnO ₂ crystals (such as electrolytic manganese dioxide EMD) at the anode.
Wet synthesis:
Oxidation method: Manganese salt solution is oxidized with chlorine or oxygen to generate MnO ₂ 5.
Precipitation method: Manganese salt reacts with alkaline solution to form hydroxide precipitate, which is calcined to obtain MnO ₂ 5.
Natural mineral processing: Soft manganese ore is directly purified through steps such as crushing, acid leaching, and impurity removal.
3, Comparison of application fields
1. Manganese monoxide
Industrial catalysis: used as a catalyst for the synthesis of pentanol and as a drying agent for ceramic glazes.
Agriculture and Feed: As a trace element fertilizer and animal feed additive.
Material preparation: Production of manganese iron alloy, magnetic materials, and battery raw materials.
2. Manganese dioxide
Battery manufacturing:
Alkaline battery positive electrode material improves energy density and cycle life by
Active component 57 for lithium batteries and zinc manganese batteries.
Environmental Protection and Chemical Industry:
Exhaust gas treatment catalyst (such as automobile exhaust purification)
Oxidants are used in non-ferrous metallurgy, uranium extraction, and organic synthesis.
Material processing:
Glass decolorizing agent, ceramic coloring agent, and rubber reinforcing agent .
Water treatment agents (adsorbing iron and manganese ions) and explosion-proof pyrotechnic materials
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