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Preparation method of nanometer metal oxide powder

A technology of oxide powder and nano-metal, applied in the direction of oxide/hydroxide preparation, rare earth metal compounds, chemical instruments and methods, etc., can solve problems such as difficult large-scale industrial production, complex and expensive equipment, and long reaction cycle. Achieve small particle size, reduce energy consumption, and narrow distribution

Active Publication Date: 2016-05-11
洛阳市方德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the equipment is complex and expensive, the reaction cycle is long, the conditions are relatively harsh, and it is difficult to realize large-scale industrial production.

Method used

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  • Preparation method of nanometer metal oxide powder
  • Preparation method of nanometer metal oxide powder

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (1) Configuration solution: Dissolve tin tetrachloride in water and configure it into an aqueous solution. After the solution is completely dissolved, citric acid is added to the prepared metal ion solution, and the pH value is adjusted to 6 with ammonia water.

[0043] (2) Esterification gel production: Add ethylene glycol to the solution in step (1), then put the solution in a water bath and heat it to 70°C, and esterification reaction occurs after 1 hour to form a transparent colloid.

[0044] (3) Crushing and drying: The colloid and white oil obtained in step (2) are added into the slurryer at the volume ratio of 100:9 at the same time, and the fluid slurry is made through the slurryer. Then the slurry is transported to the atomizer by the high-pressure pump and atomized by 8MPa high-pressure air, and the atomized material is quickly dried in the drying tower. At this time, the high-temperature gas in the drying tower is 300°C, and the drying time is 1s.

[0045] (...

Embodiment 2

[0048] (1) Configuration solution: Dissolve aluminum nitrate in water and configure it into an aqueous solution. After the solution is completely dissolved, glycine is added to the prepared metal ion solution, and the pH value is adjusted to 6 with ammonia water.

[0049] (2) Esterification gel making: add ethylene glycol to the solution in step (1), then put the solution in a water bath and heat it to 60° C., esterification reaction occurs after 1.5 hours, and a transparent colloid is formed.

[0050] (3) Crushing and drying: Add the colloid and white oil obtained in step (2) into the slurryer at the volume ratio of 100:8 at the same time, and make a fluid slurry through the slurryer. Then the slurry is transported to the atomizer by the high-pressure pump and atomized by 10MPa high-pressure air, and the atomized material is quickly dried in the drying tower. At this time, the high-temperature gas in the drying tower is 250°C, and the drying time is 30s.

[0051] (4) Oxygena...

Embodiment 3

[0054](1) Prepare solution: dissolve zirconium nitrate and yttrium nitrate in water according to a certain proportion, and prepare an aqueous solution. After the solution is completely dissolved, ethylenediaminetetraacetic acid is added to the prepared metal ion solution, and the pH value is adjusted to 8 with ammonium carbonate.

[0055] (2) Esterification gel making: add butanediol to the solution in step (1), then put the solution into a water bath and heat to 90° C., esterification reaction occurs after 0.5 h, and a transparent colloid is formed.

[0056] (3) Crushing and drying: Add the colloid, white oil and alcohol obtained in step (2) into the pulper at a volume ratio of 100:8 at the same time, and make a fluid slurry through the pulper. Then the slurry is transported to the atomizer by a high-pressure pump and atomized by 6MPa high-pressure air, and the atomized material is quickly dried in the drying tower. At this time, the high-temperature gas in the drying tower i...

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Abstract

The invention discloses a preparation method for nanocrystalline metal oxide powder. The preparation method comprises the following steps: dissolving soluble metal salts in water to prepare a single-metal or poly-metal ion solution, adding a polybasic carboxylic acid complexing agent in the prepared solution, and adjusting the pH value; adding a polyhydric alcohol cross-linking agent in the solution, heating in a water bath to generate an esterification reaction to form a transparent colloid; slurrying the obtained colloid and a dispersant to obtain slurry capable of being conveyed through a pressure pump; then atomizing and drying the slurry; and adequately combusting the dried material under the action of oxygen to obtain the nanocrystalline metal oxide powder. The colloid is rapidly prepared through the esterification reaction, and the colloid is pulpified and atomized, and instantaneously dried in a drying tower, thus greatly increasing the drying speed; the dried material is reacted with the oxygen to directly obtain the nanocrystalline powder, thus omitting a water washing link; and the prepared nanocrystalline metal oxide has the advantages of being high in purify, high in activity, small in particle size, narrow in distribution, good in dispersibility, and the like.

Description

technical field [0001] The invention relates to the field of nano powder materials, in particular to a preparation method of nano metal oxide powder. Background technique [0002] Nano metal oxide powder material is a very active research field in solid state physics, materials chemistry and biomedicine. The particle size of nanopowder is ultrafine particles on the nanometer scale (1-100nm). When the size of the powder particle enters the nanometer scale, it will produce quantum size effect, interface effect, small size effect and macroscopic quantum effect. Therefore, nanometer metal oxide powder materials have broad application prospects in chemical catalysis, electronic ceramics, biomedicine, magnetism and other fields. [0003] With the continuous deepening of research on nanoparticles and nanomaterials, there are more and more new methods for preparing nanometer metal oxide powder materials, which can be summarized into three categories: solid-phase method, liquid-phas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/14C01G19/02C01F7/02C01G25/02C01F17/00C01G29/00C01F5/06C01G23/04C01G9/02
Inventor 阳震史褆赵涛
Owner 洛阳市方德新材料科技有限公司
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