Preparation method of zinc oxide with core-shell structure and obtained zinc oxide

A core-shell structure, zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of polluting zinc oxide activity, low effective utilization rate, large carbon emission, etc., and achieves low carbon emission and high effective utilization rate. , the effect of improving the degree of dispersion

Pending Publication Date: 2022-05-06
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing zinc oxide with a core-shell structure, which aims to solve the problems of high energy consumption, large carbon emissions, serious pollution, and low activity of the obtained zinc oxide in the production method of zinc oxide in the prior art. The problem of large consumption and low effective utilization rate in industry

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  • Preparation method of zinc oxide with core-shell structure and obtained zinc oxide
  • Preparation method of zinc oxide with core-shell structure and obtained zinc oxide
  • Preparation method of zinc oxide with core-shell structure and obtained zinc oxide

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preparation example Construction

[0022] A kind of preparation method of core-shell structure zinc oxide of the present invention comprises the following steps:

[0023] 1) get nuclear material, add dispersant and sepiolite, the addition of dispersant is 5-10% of nuclear material quality, the addition of sepiolite is 1-3% of nuclear material quality, and dispersant is made of hard Fatty acid, cetyltrimethylammonium bromide, sodium dodecylbenzenesulfonate and KH550 are composed of a composite dispersant according to the mass ratio of 1-2:0.1-0.3:0.05-0.10:0.5-1.0, stirring , to get the primary mixture;

[0024] 2) Take the zinc-containing solution, add the initial mixture obtained in step 1) into the zinc-containing solution, the mass ratio of the nuclear material in the initial mixture to the zinc in the zinc-containing solution is 1:2-3:1, stir to obtain a reaction liquid;

[0025] 3) Take the alkaline solution and add it to the reaction solution obtained in step 2), the molar ratio of the solute in the alk...

Embodiment 1

[0037] A kind of preparation method of core-shell structure zinc oxide of the present invention comprises the following steps:

[0038] 1) Take calcium carbonate as the core material 50g, add 2g of dispersant and 1g of sepiolite, the dispersant is made of stearic acid, cetyltrimethylammonium bromide, sodium dodecylbenzenesulfonate and KH550 according to A composite dispersant with a mass ratio of 1:0.1:0.05:0.5 is stirred to obtain an initial mixture;

[0039] 2) Get 1500mL of zinc chloride as the zinc-containing solution, the molar concentration of zinc chloride is 1mol / L, the initial mixture obtained in step 1) is added to the zinc-containing solution, the nuclear material in the initial mixture and the zinc in the zinc-containing solution The mass ratio of the mixture is 1:2, stirred to obtain the reaction solution;

[0040] 3) get 3000mL sodium carbonate solution to be alkaline solution, the molar concentration of sodium carbonate solution is 1mol / L, joins in step 2) in t...

Embodiment 2

[0044] A kind of preparation method of core-shell structure zinc oxide of the present invention comprises the following steps:

[0045] 1) Take calcium carbonate as the core material 100g, add 5g of dispersant and 1g of sepiolite, the dispersant is made of stearic acid, cetyltrimethylammonium bromide, sodium dodecylbenzenesulfonate and KH550 according to A composite dispersant with a mass ratio of 2:0.3:0.10:1.0 is stirred to obtain an initial mixture;

[0046] 2) Get 770mL of zinc nitrate as the zinc-containing solution, the molar concentration of zinc nitrate is 2mol / L, the initial mixture obtained in step 1) is added to the zinc-containing solution, the mass of the nuclear material in the initial mixture and the zinc in the zinc-containing solution The ratio is 1:1, stir to obtain the reaction solution;

[0047] 3) get 2300mL sodium hydroxide solution to be alkaline solution, the molar concentration of sodium hydroxide solution is 2mol / L, join in the reaction solution of s...

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Abstract

The invention provides a preparation method of zinc oxide with a core-shell structure and zinc oxide obtained by the preparation method. The preparation method comprises the following steps: 1) taking a core material, adding a dispersing agent and sepiolite, stirring the dispersing agent which is a composite dispersing agent composed of stearic acid, CTAB, SDBS and KH550 according to a mass ratio of (1-2): (0.1-0.3): (0.05-0.10): (0.5-1.0) to obtain a primary mixture; 2) taking a zinc-containing solution, adding the primary mixture into the zinc-containing solution, and stirring to obtain a reaction solution; 3) adding an alkaline solution into the reaction solution, stirring for reaction, and removing water to obtain a precipitate; and 4) taking the precipitate, drying and calcining to obtain the core-shell structure zinc oxide. The core material is uniformly dispersed and suspended in the zinc-containing solution under the action of the dispersing agent and the sepiolite, insoluble substances generated in situ are strongly adsorbed on the surface of the core material, the energy consumption is low, and the carbon emission is small; the obtained zinc oxide has the advantages of small particle size, large specific surface area, high activity and high effective utilization rate.

Description

technical field [0001] The invention relates to the technical field of zinc oxide preparation methods, in particular to a preparation method of core-shell structure zinc oxide and the resulting zinc oxide. Background technique [0002] Zinc oxide is a white or light yellow powder, insoluble in water but soluble in strong acid and strong alkali. It is a vulcanization active agent for rubber and plays an irreplaceable role in the rubber industry. The traditional zinc oxide production method is to vaporize zinc metal at a high temperature of 1000°C and react with oxygen in the air to form zinc oxide. This zinc oxide production method has high energy consumption, large carbon emissions, and serious pollution. In addition, the activity of this zinc oxide is low, and it is easy to agglomerate, and it is difficult to disperse in rubber; this zinc oxide is used in a large amount in the rubber industry, usually, the amount of zinc oxide per 100 grams of rubber is 5g; However, the ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02C08K7/18C08L7/00
CPCC01G9/02C08K7/18C01P2004/03C01P2004/61C01P2004/62C01P2006/12C01P2004/64C08L7/00
Inventor 陈琪王志彬刘显贞顾兆磊
Owner QINGDAO UNIV OF SCI & TECH
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