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Preparation method of monodisperse nano boehmite

A nano-boehmite and monodisperse technology, applied in nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as large specific surface area, achieve low specific surface area, uniform shape, and good monodispersity Effect

Pending Publication Date: 2021-10-22
ANHUI ESTONE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of the boehmite obtained by this method is all nano-scale, but due to its porous structure and large specific surface area, it will be difficult to apply in lithium batteries and polymers due to problems such as thickening and oil absorption. The specific surface area of ​​nano-boehmite used in China is generally less than 50m 2 / g

Method used

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  • Preparation method of monodisperse nano boehmite
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  • Preparation method of monodisperse nano boehmite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The nano-stage hydroxide 10g of 30 nm was taken from the diameter of 0.5 um, and the particle diameter of 5,000 micrometer aluminum hydroxide 80g was 300 g of water, and after mixing, the pH is adjusted to 7.0. It is put into the reactor, 200 ° C, 1.5 MPa under 20 h, slurry, filtration, drying, dispersion, and is a nammite material.

[0037] Depend on figure 1 It can be seen that the prepared product is a single scattered nanoparticle, and the particle size of single particles is about 70 to 100 nm, and the topography is uniform, which is a block structure.

Embodiment 2

[0039] A nano-stage hydroxide 15g of 50 nm was taken with a particle diameter of 0.5 um, and the particle diameter of 2 um is 2 um, and the particle diameter is 300 g of water, and after mixing is uniform, the pH is adjusted to 7.2. It is put into reactor, 210 ° C, 1.6 MPa treatment for 18 h, slurry removed, filtered, dried, dispelled, and the nammite material was obtained.

[0040] Depend on figure 2 It can be seen that the prepared product is single-dispersive nanoparticles, and the particle size of single particles is 60 to 90 nm, and the topography is uniform, which is a block structure.

Embodiment 3

[0042] A nanoscale aluminum hydroxide 15g of 5.5 um was taken from a particle diameter of 30 nm, and a particle diameter of 2 um was 2 um, 70 g of 500 g of water, mixed and uniform, adjusted pH to 7.0. It is put into reactor, 160 ° C, 1.3MPa under 25 h, slurry, filtration, drying, dispersion, ie nammite material.

[0043] Depend on image 3 It can be seen that the prepared product is single-degree nanoparticles, and the particle size of single particles is 60 to 90 nm, and the topography is uniform, which is a block structure.

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Abstract

The invention discloses a preparation method of monodisperse nano boehmite, and relates to the technical field of inorganic powder materials, the monodisperse nano boehmite has a particle size of 50-200nm and a specific surface area of 10-50m < 2 > / g, and is prepared from nano-scale aluminum hydroxide, submicron-scale aluminum hydroxide and micron-scale aluminum hydroxide through a hydrothermal reaction; the prepared powder is good in monodispersity, the particle size of a terminal product can be controlled by selecting the particle size of raw materials, and production is more convenient; and the obtained nanoscale boehmite is uniform in morphology, reaches the nanoscale and is low in specific surface area.

Description

Technical field: [0001] The present invention relates to the field of inorganic powder material, and more particularly to a method of preparing a single-dispersive namstonite. Background technique: [0002] Bumhm Stones, also known as a water soft aluminum stone, is an emerging material, widely used in lithium batteries, copper plates, coatings, plastics, rubber and other industries. In recent years, as the demand for boehmite is increasing, such as single scattering of the particle size is increasing. Especially the industrialization of single-scattered nanobrimst has been more concerned. [0003] Patent CN110078104A discloses a production process for producing boehmite powder in conventional industrial aluminum oxide powder, and transferred industrial alumina powder and water, and transferred to the reactor, regulating the pressure in the reactor, regulating the pressure in the reaction. After the pressing was 1 h, the slurry was discharged directly under pressure pressure, coo...

Claims

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Application Information

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IPC IPC(8): C01F7/02C01F7/44B82Y40/00
CPCC01F7/02C01F7/447B82Y40/00C01P2004/62C01P2004/64C01P2004/52C01P2006/12
Inventor 郭敬新徐作涛蒋学鑫王韶晖
Owner ANHUI ESTONE MATERIAL TECH CO LTD
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