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A kind of preparation method of metal oxide or metal composite oxide

A metal composite and oxide technology, applied in the preparation of oxide/hydroxide, metal/metal oxide/metal hydroxide catalyst, rare earth metal oxide/hydroxide, etc., can solve the problem that the co-precipitation conditions are difficult to control And other issues

Active Publication Date: 2019-05-17
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical precipitation method has the advantages of simple preparation method, low cost, and easy industrialization, but there is a disadvantage that the coprecipitation conditions are difficult to control for the production and preparation of metal composite oxides.

Method used

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  • A kind of preparation method of metal oxide or metal composite oxide
  • A kind of preparation method of metal oxide or metal composite oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Weigh 3.75g of aluminum nitrate nonahydrate and 10g of polyethylene glycol 400, and add them to a polytetrafluoroethylene reaction vessel with a capacity of 50mL; seal the polytetrafluoroethylene reaction vessel and place it under constant temperature magnetic stirring at 80°C In the oil bath, continue magnetic stirring for 1 hour to obtain a molten mixture;

[0020] (2) Add 1 g of cetyltrimethylammonium bromide to the polytetrafluoroethylene reaction vessel, and continue magnetic stirring for 1 hour to obtain a melt-dispersed mixture;

[0021] (3) Quickly transfer the molten and dispersed mixture to a corundum crucible, put it into a tube furnace and calcinate at 800°C for 5 hours in a static air atmosphere, and obtain powdered alumina after cooling with the furnace.

Embodiment 2

[0023] (1) Weigh 4.04g of iron (III) nitrate nonahydrate and 10g of polyethylene glycol 400, and add them to a polytetrafluoroethylene reaction vessel with a capacity of 50mL; seal the polytetrafluoroethylene reaction vessel and place it in a 60°C In the constant temperature magnetic stirring oil bath, the magnetic stirring was continued for 1 hour to obtain the molten mixture liquid;

[0024] (2) Add 1 g of cetyltrimethylammonium bromide to the polytetrafluoroethylene reaction vessel, and continue magnetic stirring for 1 hour to obtain a melt-dispersed mixture;

[0025] (3) Quickly transfer the molten and dispersed mixture to a corundum crucible, put it into a tube furnace and calcinate at 700°C for 5 hours in a static air atmosphere, and obtain powdered iron oxide after cooling with the furnace.

Embodiment 3

[0027] (1) Weigh 2.91g of cobalt(II) nitrate hexahydrate and 10g of polyethylene glycol 600, and add them to a polytetrafluoroethylene reaction vessel with a capacity of 50mL; seal the polytetrafluoroethylene reaction vessel and place it in a 60°C In the constant temperature magnetic stirring oil bath, the magnetic stirring was continued for 1 hour to obtain the molten mixture liquid;

[0028] (2) Add 1 g of cetyltrimethylammonium bromide to the polytetrafluoroethylene reaction vessel, and continue magnetic stirring for 1 hour to obtain a melt-dispersed mixture;

[0029] (3) Quickly transfer the molten and dispersed mixture to a corundum crucible, put it into a tube furnace and calcinate at 600°C for 5 hours in a static air atmosphere, and obtain powdered cobalt tetroxide after cooling with the furnace.

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Abstract

The invention relates to a method for preparing metal oxides or metal composite oxides. The method comprises the following steps: heating the temperature of metal nitrate and a dispersion carrier to 50 DEG C to 150 DEG C, and carrying out stirring to enable the metal nitrate to be melted and dispersed in the dispersion carrier, so as to obtain a melted mixture solution; adding a template agent into the melted mixture solution, and carrying out stirring, so as to obtain a melted and dispersed mixture; and carrying out calcining for 3 to 5 hours at the temperature of 400 DEG C to 900 DEG C, andcarrying out furnace cooling, thereby obtaining powdered metal oxides or metal composite oxides. The method disclosed by the invention has the following advantages that the raw materials are readily available, the cost is low, the method is simple and controllable, large-sized special equipment is not required, and industrial production is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic materials, and in particular relates to a method for preparing metal oxides or metal composite oxides. Background technique [0002] Metal oxides have the characteristics of redox activity, variable valence, good stability, corrosion resistance, and high temperature resistance, which make them have great application prospects in the fields of sensing, optoelectronics, catalysis, and adsorption. Frontier research fields at home and abroad. [0003] Currently, methods for synthesizing metal oxides and metal composite oxides include solvothermal, sol-gel, and chemical precipitation methods. (1) The solvothermal method is one of the conventional methods for preparing nano-metal oxides in the laboratory. Usually, a dispersant, a structure-directing agent and a reducing agent are added to the solution of the metal precursor salt, and a special morphology is obtained through a high-pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/18C01F7/02C01G49/06C01G51/04C01G53/04C01G3/02C01G9/02C01G37/02C01G25/02C01F17/00B01J23/72B01J23/83B01J23/75C01B32/50
CPCB01J23/002B01J23/72B01J23/75B01J23/83C01B13/18C01B13/185C01F7/02C01F17/206C01G3/02C01G9/02C01G25/02C01G37/02C01G49/06C01G51/04C01G53/04C01P2002/72
Inventor 陶进长肖方明曹洪杨郭秋松李伟朱薇高远金明亚张魁芳
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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