Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of nanometer alpha-manganese dioxide (MnO2) hollow ball

A hollow sphere and micron-scale technology, which is applied in the preparation of microspheres, microcapsule preparations, manganese oxide/manganese hydroxide, etc., can solve the problems of long reaction time and low concentration of reactants

Inactive Publication Date: 2012-07-18
HENAN NORMAL UNIV
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Xie Yi et al. used AgNO 3 α-MnO was prepared as a catalyst by oxidizing manganese sulfate with potassium persulfate at normal pressure 2 Hollow microspheres (Z.Q.Li, Y.Ding, Y.J.Xiong, Q.Yang and Y.Xie, Chem.Commun., 2005, 918), but the method reactant concentration is too low, the reaction time is long, and expensive Silver nitrate as catalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of nanometer alpha-manganese dioxide (MnO2) hollow ball
  • Preparation method of nanometer alpha-manganese dioxide (MnO2) hollow ball
  • Preparation method of nanometer alpha-manganese dioxide (MnO2) hollow ball

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Prepare 0.1mol.L respectively -1 Put 100ml of manganese sulfate solution and potassium persulfate solution in a 500ml reaction vessel, place the reaction vessel in a constant temperature box, keep the temperature at 50°C and keep it still for 10h, filter the generated precipitate, wash with deionized water until the filtrate is washed with barium chloride Until no white precipitate is detected in the solution, the filter cake is dried in an oven at 80°C for 10 hours to obtain MnO 2 Hollow microspheres, the size of the microspheres is 4-6 μm, detected as α-MnO by X-powder diffraction 2 Crystal structure.

example 2

[0020] Prepare 0.1mol.L respectively -1 Put 100ml of each manganese sulfate solution and potassium persulfate solution in a 500ml reaction vessel, place the reaction vessel in a constant temperature box, keep the temperature at 50°C and keep it still for 5 hours, filter the generated precipitate, wash with deionized water until the filtrate is washed with barium chloride Until no white precipitate is detected in the solution, the filter cake is dried in an oven at 80°C for 10 hours to obtain MnO 2 Hollow microspheres, the size of the microspheres is 2-4μm, detected as α-MnO by X-powder diffraction 2 Crystal structure.

example 3

[0022] Prepare 0.1mol.L respectively -1 Put 100ml of manganese sulfate solution and potassium persulfate solution in a 500ml reaction vessel, place the reaction vessel in a constant temperature box, keep the temperature at 50°C and keep it still for 15 hours, filter the generated precipitate, wash with deionized water until the filtrate is washed with barium chloride Until no white precipitate is detected in the solution, the filter cake is dried in an oven at 80°C for 10 hours to obtain MnO 2 Hollow microspheres, the size of the microspheres is 5-8μm, detected as α-MnO by X-powder diffraction 2 Crystal structure.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a nanometer alpha-manganese dioxide (MnO2) hollow ball, which comprises the following steps that: bivalent soluble manganese salt and potassium peroxydisulfate solution with given concentrations are respectively prepared, and the bivalent soluble manganese salt is selected from one of manganous sulfate, manganese chloride and manganese acetate; the solution is blended inside a reaction vessel according to an equivalent mol ratio, the temperature is controlled between 20 DEG C and 90 DEG C, the mixed solution is insulated and held for 1 to 96 hours, and products are filtered, washed and dried to obtain a product of the nanometer alpha-MnO2 hollow ball. The preparation method is carried out in normal-pressure low-temperature liquid, so a pressure-resistant vessel is not required, no surface active agent or other additives are added, no blending is required, the reaction is moderate, simplicity in operation is realized, and the cost is low.

Description

technical field [0001] The invention belongs to a method for preparing a manganese dioxide material, in particular to a micron-sized α-MnO 2 Preparation method of hollow spheres. Background technique [0002] Manganese dioxide has become an important raw material in the field of energy and electronics due to its low price and environmental friendliness, and is widely used in fields such as alkaline manganese batteries and ferromagnetic materials. In recent years, it has been found that nano-manganese dioxide has unique and excellent properties for supercapacitors and lithium-ion batteries, as well as molecular sieves and catalysts in the chemical industry. The physical and chemical properties of manganese dioxide depend to a large extent on parameters such as morphology, crystal structure, volume, density, etc. Therefore, the preparation of manganese dioxide nanomaterials with different crystal forms and different morphologies has become a research hotspot in recent years, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G45/02B01J13/02
Inventor 常照荣常焜汤宏伟上官恩波魏秀格
Owner HENAN NORMAL UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com