Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of polycrystalline alumina self-assembled octahedral particles

A polycrystalline alumina, self-assembly technology, applied in chemical instruments and methods, alumina/aluminum hydroxide, aluminum compounds, etc., can solve the problem that the distribution ratio of oxide crystal planes has no obvious effect, etc.

Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-assembly method has no obvious effect on the distribution ratio of the oxide crystal plane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of polycrystalline alumina self-assembled octahedral particles
  • Preparation method of polycrystalline alumina self-assembled octahedral particles
  • Preparation method of polycrystalline alumina self-assembled octahedral particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]After 15 grams of Sb powder, the ball grinding was ground into a fine powder, and the powder was selected from about 5,000 mesh, and the aniline solution was prepared, and then adsorbed on the alumina precursor powder, and the amount of aniline was calcined. 4% of the amount of alumina precursor. After drying at 120 ° C, the material is placed in a closed system, the lower portion of the closed system is 25 g / L an aniline solution, and the upper portion is the above-mentioned alumina precursor, the solid phase is not directly in direct contact with the liquid phase.

[0027]The heating closed system 250 ° C, water heat treatment for 24 hours. The removal product was then naturally cooled, and then dried at 120 ° C for 4 hours at 550 ° C to obtain the product. The scanning electron microscope is observed that the product morphology is a six-prism-like octahedral particle shape, has an octahedral perspective morphology of approximately regular, divided into 4 groups, each set of ...

Embodiment 2

[0029]After 15 grams of SB powder, the ball mill was ground into a fine powder, and the powder of about 10,000 titles was selected, and the aniline solution was prepared, and then adsorbed on the alumina precursor powder, and the amount of aniline was calcined. The amount of alumina precursor is used for 2.5%. After drying at 120 ° C, the material is placed in a closed system, and the lower portion of the closed system is 20 g / L an aniline solution, and the upper portion is the above-treated alumina precursor, the solid phase is not directly in contact with the liquid phase.

[0030]The heating closing system was 200 ° C, water heat treatment for 36 hours. The removal product was then naturally cooled, and then dried at 120 ° C for 4 hours at 550 ° C to obtain the product. The scanning electron microscope is observed that the product morphology is a six-prism-like octahedral particle shape, has an octahedral perspective morphology of approximately regular, divided into 4 groups, each...

Embodiment 3

[0032]After 15 g of silicon-modified SB powder, the ball mill was ground into a fine powder, and the powder was selected from the powder, and the ethanolamine solution was prepared, and then adsorbed in an alumina precursor powder, aniline The amount of aluminum oxide precursor amount after calcination is 6%. After drying at 120 ° C, the material is placed in a closed system, and the lower portion of the closed system is 20 g / L an aniline solution, and the upper portion is the above-treated alumina precursor, the solid phase is not directly in contact with the liquid phase.

[0033]The heating closing system was 200 ° C, and the water was treated for 12 hours. The removal product was then naturally cooled, and then dried at 120 ° C for 4 hours at 550 ° C to obtain the product. The scanning electron microscope is observed that the product morphology is a six-prism-like octahedral particle shape, has an octahedral perspective morphology of approximately regular, divided into 4 groups, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of polycrystalline alumina self-assembled octahedral particles, which comprises the following steps: (1) fully adsorbing an organic amine solution by roasted alumina precursor powder by using an isopyknic impregnation method, and treating the powder by using a high-energy ball mill; (2) drying the material obtained in the step (1), and screening the material with proper granularity; and (3) carrying out closed hydrothermal treatment on the material screened in the step (2); wherein the closed system is divided into an upper part and a lower part, the upper part is an alumina precursor solid material, the lower part is a liquid phase, the solid phase and the liquid phase are not in direct contact, a gas-solid reaction is carried out at a high temperature, and after the reaction is finished, drying and roasting are carried out to obtain the product. The method is simple, green and environmentally friendly, and the aluminum oxide material synthesized through the method has wide application prospects in the fields of catalysis and adsorption.

Description

Technical field[0001]The present invention belongs to the field of inorganic material preparation, and more particularly to the preparation method of polycrystalline aluminum oxide self-assembling octa particles.Background technique[0002]Alumina is a widely associated catalyst carrier material, which is directly related to the surface properties exposed, and the performance of the catalyst has an important effect. For γ-alumina, (110) crystal surfaces have thermodynamic stabilization, usually prioritized. The alumina (111) crystal plane and (100) crystal plane have a atomic arrangement and chemical properties different from (110) crystal surface, thus obtaining a special interface property by regulating the alumina crystal plane. However, in the whole, the condition of alumina (110) crystal surface occupies advantageous status is easily changed.[0003]The existing studies have shown that single crystal alumina grains mainly expose {110} crystal facies and {111} crystal facies, {110} ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01F7/02
CPCC01F7/025C01F7/023C01P2004/41C01P2002/72C01P2004/03Y02P20/52
Inventor 张雁玲杨卫亚凌凤香张会成王少军沈智奇
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com