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Manufacturing method of nano cerium oxide

A nano-cerium oxide, manufacturing method technology, applied in chemical instruments and methods, nanotechnology, inorganic chemistry, etc., can solve the problems of poor dispersibility, hindering application, insufficient dispersibility of nanomaterials, etc., and achieves reduced separation and good dispersibility. Effect

Inactive Publication Date: 2019-05-14
WEIHAI PIDC NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The nano cerium oxide powder obtained by the above method is often agglomerates of nanoparticles with poor dispersion
In many cases, it is because the dispersion of nanomaterials is not good enough, which hinders its application

Method used

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  • Manufacturing method of nano cerium oxide
  • Manufacturing method of nano cerium oxide
  • Manufacturing method of nano cerium oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 (36nm cerium oxide)

[0027] 1) Preparation of cerium octanoate (such as figure 1 shown)

[0028] Mix 30 liters of octanoic acid and 90 liters of 1-nonanol evenly, add 5.5 liters of 30% sodium hydroxide solution, and add them to the saponification kettle; stir well, and pump the reaction solution into the reactor after the reaction is completed, then add cerium nitrate solution 30 liters (with CeO 2 : 3.2kg), after reacting for 20 to 30 minutes, leave it still; remove the aqueous phase of the lower floor, and the organic phase of the upper floor is the cerium octoate solution, which is pumped into the cerium octoate organic storage tank for subsequent use.

[0029] 2) spray combustion, collection (such as figure 2 shown)

[0030] Introduce cerium octoate into the combustion nozzle, atomize with 1.1Mpa compressed air, and ignite and burn in the combustion chamber at the same time. The flame temperature is 750-850°C. After the combustion exhaust gas pass...

Embodiment 2

[0031] Embodiment 2 (52nm cerium oxide)

[0032] 1) Preparation of cerium octanoate (such as figure 1 shown)

[0033] Mix 30 liters of octanoic acid and 90 liters of 1-nonanol evenly, add 5.5 liters of 30% sodium hydroxide solution, and add them to the saponification kettle; stir well, and pump the reaction solution into the reactor after the reaction is completed, then add cerium nitrate solution 30 liters (with CeO 2 : 3.2kg), after reacting for 20 to 30 minutes, let it stand; remove the water phase of the lower floor, and the organic phase of the upper floor is the cerium octoate solution, which is pumped into the cerium octoate organic storage tank for subsequent use.

[0034] 2) spray combustion, collection (such as figure 2 shown)

[0035] Introduce cerium octoate into the combustion nozzle, atomize with 1.0Mpa compressed air, and ignite and burn in the combustion chamber at the same time. The flame temperature is 750-850°C. The combustion tail gas is introduced int...

Embodiment 3

[0036] Embodiment 3: (18nm cerium oxide)

[0037] 1) Preparation of cerium octanoate (such as figure 1 shown)

[0038] Mix 30 liters of octanoic acid and 90 liters of 1-nonanol evenly, add 5.5 liters of 30% sodium hydroxide solution, and add them to the saponification kettle; stir well, and pump the reaction solution into the reactor after the reaction is completed, then add cerium nitrate solution 30 liters (with CeO 2 : 3.2kg), leave standstill after reacting for 20~30 minutes; Remove the aqueous phase of lower floor, the organic phase of upper strata is cerium octanoate solution, pumps into cerium octanoate organic storage tank for subsequent use;

[0039] 2) spray combustion, collection (such as figure 2 shown)

[0040] The diluted cerium octanoate is introduced into the combustion nozzle, atomized with 1.2Mpa compressed air, and ignited and burned in the combustion chamber at the same time. The flame temperature is 700-800°C. Collected for the second time, the nano-...

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Abstract

The invention discloses a manufacturing method of nano cerium oxide. The method comprises the following steps: firstly, octanoic acid and sodium hydroxide are subjected to saponification to obtain a low carbon alcohol-aqueous solution of sodium caprylate; cerate is added for reaction to obtain a cerium octoate solution; the cerium octoate solution is then treated by atomizing combustion under highpressure and collected by an electrostatic dust collector to obtain nano cerium oxide dry powder with high dispersibility, wherein the particle size of the nano cerium oxide dry powder is controlledwithin the range of 15-100 nm; and the octanoic acid can be replaced by isocaprylic acid and nonylic acid. The manufacturing method has the advantages that the liquid cerium octoate is directly changed into the nano cerium oxide solid particles in nanometer size, thereby not only reducing the steps of separating and drying an intermediate, but also generating nanometer particles with good dispersibility.

Description

technical field [0001] The invention relates to a method for manufacturing nano cerium oxide, which belongs to the technical field of inorganic ultrafine materials. Background technique [0002] Due to the special properties of nanomaterials, such as abnormal mechanics, electricity, magnetism, optical properties, sensitive properties, catalysis and photoactivity, etc., the application of nanomaterials is becoming more and more extensive, and its applications are almost everywhere in industry, agriculture, Medicine, environmental protection, national defense and many other fields. Nano cerium oxide (CeO 2 ) is a new type of material that combines the advantages of traditional cerium oxide and nanomaterials. It has excellent properties such as good catalysis, high temperature resistance, and ultraviolet absorption. Its particle size is small and its activity is high. It can be used as a polishing material (such as semiconductor chemical mechanical polishing), catalysts (such...

Claims

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Application Information

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IPC IPC(8): C01F17/00B82Y40/00
Inventor 孙浩李森
Owner WEIHAI PIDC NEW MATERIALS
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