Process for preparing nano zinc oxide

A nano-zinc oxide, zinc acetate technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of easy agglomeration of zinc oxide nanoparticles, complex process and equipment, poor oil dispersion, etc. The effect of industrial promotion and moderate esterification reaction speed

Inactive Publication Date: 2006-01-25
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the invention is to: overcome the defects of high energy consumption required by the prior art, easy agglomeration of zinc oxide nanoparticles, poor oil dispersibility, complicated process and equipment, and high cost; double dispersion characteristics), non-agglomerated, white-colored zinc oxide nanoparticles; thereby providing a method for preparing nano-zinc oxide that does not require high-temperature calcination and has a simple process

Method used

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  • Process for preparing nano zinc oxide
  • Process for preparing nano zinc oxide
  • Process for preparing nano zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Methanol and zinc acetate were put into an autoclave at a ratio of 5:1 (mL / g), and the filling volume was 60%. After tightening, put it into an oven and react at 200°C for 2 hours. After the reaction was completed, it was naturally cooled to room temperature. The upper liquid was removed, and the bottom precipitate was filtered, washed and dried to obtain zinc oxide nanopowder with an average particle size of 30nm.

Embodiment 2

[0043] Put 2v% methanol aqueous solution (volume ratio methanol: water = 1:50) and zinc acetate at 50:1 (mL / g) into an autoclave with a filling capacity of 60%, screw it tightly and place it in an oven, and react at 200°C for 4 hours . After the reaction was completed, it was naturally cooled to room temperature. The upper liquid was removed, and the precipitate at the bottom was filtered, washed and dried to obtain zinc oxide nanopowder with an average particle size of 40nm.

Embodiment 3

[0045] Ethanol and zinc acetate were put into an autoclave at a ratio of 10:1 (mL / g), and the filling volume was 60%. After tightening, put it into an oven and react at 100°C for 24 hours. After the reaction was completed, it was naturally cooled to room temperature. The upper liquid was removed, and the precipitate at the bottom was filtered, washed and dried to obtain zinc oxide nanopowder with an average particle size of 40nm.

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Abstract

The invention relates to a process for preparing nano zinc oxide wherein zinc acetate alcoholysis reaction is employed to couple the formation of zinc oxide and esterification reaction between acetates and ethanol, thus obtaining nana zinc oxide powder with double dispersibility.

Description

technical field [0001] The invention relates to a preparation method of zinc oxide, in particular to a preparation method of nanometer zinc oxide. Background technique [0002] Zinc oxide powder, especially nano-zinc oxide, is an important industrial raw material. It is widely used in many fields because of its excellent photoelectric properties and low price. For example, it can be used in rubber products, glass, magneto-optical recording Materials, sensors, sunscreen, antibacterial, disinfectant, deodorant, wound healing accelerator and anticancer drugs, etc. [0003] The commonly used method for preparing nano zinc oxide is the precipitation method. As described in the patents of Publication No. 1396117, Publication No. 1384057 and Publication No. 1415545, this type of method is to add alkaline substances such as carbonate, ammonium bicarbonate, ammonia or urea in a zinc-containing solution (such as zinc sulfate solution) , to obtain basic zinc carbonate powder, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02C01G1/02
Inventor 杜红初袁方利黄淑兰李晋林
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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