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Preparation method of multiple-duct composite metal oxide

A composite metal and oxide technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the nutritional value, water retention and adsorption performance of artemia eggshells, multi-level pore structure Research and structure replication have not been reported, and the periodicity of the pore structure is not strong, etc., to achieve the effect of wide application value, shortened distance, and low cost

Inactive Publication Date: 2013-05-22
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the multi-level pore structures prepared by the prior art have shortcomings such as poor periodicity of the pore structure, poor connectivity between macropores, or inconspicuous mesoporous structures.
Artemia eggshell itself has a wide pore size distribution, and has the advantages of regular and orderly distribution of macropores, mesopores, and micropores. However, the current research on Artemia eggshells only stops at its nutritional value, water retention and adsorption performance, etc., but there is no report on the structure research and structure replication of its multi-level channels.

Method used

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  • Preparation method of multiple-duct composite metal oxide
  • Preparation method of multiple-duct composite metal oxide
  • Preparation method of multiple-duct composite metal oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Dissolve 1.26g Pluronic F127 in 100ml water, stir for 0.5h at 400r / min at 40℃, add 0.1g lithium acetate, 1g nickel nitrate, 1g copper nitrate and 2g zinc nitrate to the above solution, continue to stir at constant temperature for 1h; Wash Artemia egg shells, and after ball milling for 6 hours, use 6mol / L HCl and 8mol / L H 2 SO 4 , 6mol / L HNO 3 , 2mol / L KOH soaking pretreatment, soaking time is 2h for each substance, drying to remove water. Add 7.4263g of citric acid and 0.5g of Artemia egg shell to the above-mentioned solution of adding metal salt, continue to stir to form a sol, adjust the Ph value to 6 with ammonia water, raise the temperature to 80°C, and stir until a gel is formed. The obtained gel was dried in an oven at 80°C for 6 hours to form a dry gel. Then, the obtained dry gel is heated at a temperature of 1°C / min, the calcination temperature is controlled to 500°C, and the temperature is kept for 4 hours, to obtain a multi-stage pore LiNiCuZn composite metal o...

Embodiment 2

[0022] 0.5285g CTAB was mixed in 100ml water and stirred at a speed of 600r / min for 0.75h at 50°C. Add 3.05g of lithium acetate, 4g of nickel acetate, 4.5g of copper nitrate, 8g of zinc nitrate to the above solution, and stir for 1.5h at constant temperature; clean the artemia egg shells, and after ball milling for 6 hours, use 9mol / L HCl respectively , 13mol / L of H 2 SO 4 , 10mol / L HNO 3 , 4mol / L KOH soaking pretreatment, soaking time is 4h for each substance, drying to remove water. Add 31.8517g of citric acid and 2.35g of Artemia egg shells to the above-mentioned solution of adding metal salt, continue to stir to form a sol, adjust the Ph value to 7 with ammonia water, raise the temperature to 90°C, and stir until a gel is formed. The obtained gel was placed in an oven at 90° C. and dried for 15 hours to form a dry gel. Then, the obtained dry gel is heated at a rate of 6°C / min, the calcination temperature is controlled to 600°C, and the temperature is kept for 5 hours, then...

Embodiment 3

[0024] 1.093g CTAB was dissolved in 100ml water and stirred at 60°C at a speed of 800r / min for 1h. Add 6g of lithium nitrate, 7g of nickel acetate, 8g of copper acetate and 14g of zinc acetate to the above solution, continue to stir at constant temperature for 2h; clean the Artemia egg shells, and after ball milling for 6 hours, use 12mol / L HCl and 18mol respectively / L of H 2 SO 4 , 14mol / L HNO 3 , 6mol / L KOH soaking pretreatment, soaking time is 6h for each substance, drying to remove water. Add 46.0227g of citric acid and 5g of Artemia egg shells to the above-mentioned solution of adding metal salt, continue to stir to form a sol, adjust the Ph value to 8 with ammonia water, raise the temperature to 100°C, and stir until a gel is formed. The obtained gel was placed in an oven at 100° C. and dried for 24 hours to form a dry gel. Then, the obtained dry gel is heated at a rate of 10°C / min, the calcination temperature is controlled to 800°C, and the temperature is kept for 6 ho...

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Abstract

The invention discloses a preparation method of a multiple-duct composite metal oxide. The preparation method comprises the following steps of: adding metal salt and citric acid to a surfactant or a segmented copolymer which is taken as a soft template and a brine shrimp egg shell which is taken as a hard template;, and stirring to obtain wet gel; drying the wet gel in a drying box, and calcining the dried gel in a muffle to obtain the multiple-duct composite metal oxide. The preparation method is low in cost, simple in process, easy to control and good in repeatability, ensures that pore size distribution is uniform and pore walls are communicated with one another, and can be widely applied to the fields of catalysis, fuel batteries and electrode materials.

Description

Technical field [0001] The invention belongs to the technical field of functional materials, and particularly relates to a method for preparing metal oxides. Background technique [0002] Metal oxides are widely used in lithium ion batteries, supercapacitors, fuel cells, catalyst materials and other fields. The multi-stage pore structure has attracted more attention due to its large specific surface area, light density, large internal volume and high permeability. At present, the preparation of multi-level pore structures mostly adopts the dual template method, using high polymers such as polyurethane as the macroporous template, while using block copolymers or quaternary ammonium salts as the mesoporous template. [0003] However, most of the multi-level pore structures prepared by the prior art have disadvantages such as poor periodicity of the pore structure, poor connectivity between macropores, or inconspicuous mesoporous structure. Artemia egg shell itself has a wide range ...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J35/10
Inventor 赵玉峰何静高发明
Owner YANSHAN UNIV
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