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Process for preparing nano zinc oxide

A nano-zinc oxide and monohydric alcohol technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of easy agglomeration of zinc oxide nanoparticles, complicated process and equipment, poor oil dispersibility, etc., and achieve simple and easy operation and easy Industrial promotion, the effect of moderate esterification reaction speed

Inactive Publication Date: 2005-01-19
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 purpose of the present 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; 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 the autoclave at a ratio of 5:1 (mL / g), the filling amount was 60%, tightened, put into the oven, and reacted at 200°C for 2 hours. After the reaction is completed, it is naturally cooled to room temperature. The upper liquid is removed, and the bottom sediment is filtered, washed and dried to obtain zinc oxide nanopowder with an average particle size of 30 nm.

Embodiment 2

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

Embodiment 3

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

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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 method for preparing zinc oxide, in particular to a method for preparing nano zinc oxide. Background technique [0002] Zinc oxide powder, especially nano-zinc oxide, is an important industrial raw material. Because of its excellent photoelectric properties and low price, it is widely used in many fields, such as: rubber products, glass, magneto-optical recording Materials, sensors, sunscreen, antibacterial, disinfectant, deodorant, wound healing promoter and anti-cancer drugs, etc. [0003] The commonly used method for preparing nanometer zinc oxide is precipitation. 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 to a solution containing zinc (such as a zinc sulfate solution) , The basic zinc carbonate powder is obtained, and then calcined at 150-600 DEG C to obt...

Claims

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Application Information

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IPC IPC(8): C01G1/02C01G9/02
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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