Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel porous high-specific-surface aluminum hydroxide material

A technology of aluminum hydroxide and high specific surface, applied in the directions of alumina/aluminum hydroxide, inorganic chemistry, aluminum compounds, etc., can solve the problem of high preparation cost, achieve the effects of simple operation, stable pore volume, and improved production efficiency

Inactive Publication Date: 2018-06-15
魏达
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to aim at the technical defects of the prior art, and provide a new porous high specific surface aluminum hydroxide material to solve the technical problem of high preparation cost of the conventional porous high specific surface aluminum hydroxide new material in the prior art

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
  • Novel porous high-specific-surface aluminum hydroxide material
  • Novel porous high-specific-surface aluminum hydroxide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The new porous aluminum hydroxide material with high specific surface is prepared by the following method:

[0030] 1) Take aluminum hydroxide and dissolve it with 2 times the mass of deionized water under steam heating at 120°C, adjust the concentration of aluminum oxide in the solution to 25g / L;

[0031] 2) Add the product obtained in step 1) to the carbonization tower, and at the same time add liquid carbon dioxide to the carbonization tower for gelation reaction to obtain modified aluminum hydroxide slurry; the gelation reaction temperature is 20°C, and the gelation reaction time 20min;

[0032] 3) The modified aluminum hydroxide slurry obtained in step 2) is added to the filter press for solid-liquid separation, the liquid phase is discarded, the washing liquid is added to the filter press, and then the solid-liquid separation is performed again, and the solid phase is taken as Modified aluminum hydroxide product;

[0033] 4) Add the product obtained in step 3) to a tray ...

Embodiment 2

[0049] The new porous aluminum hydroxide material with high specific surface is prepared by the following method:

[0050] 1) Take aluminum hydroxide and dissolve it with 2 times the mass of deionized water under steam heating at 120°C, adjust the concentration of aluminum oxide in the solution to 25g / L;

[0051] 2) Add the product obtained in step 1) to the carbonization tower, and at the same time add liquid carbon dioxide to the carbonization tower for gelation reaction to obtain modified aluminum hydroxide slurry; the gelation reaction temperature is 20°C, and the gelation reaction time 20min;

[0052] 3) The modified aluminum hydroxide slurry obtained in step 2) is added to the filter press for solid-liquid separation, the liquid phase is discarded, the washing liquid is added to the filter press, and then the solid-liquid separation is performed again, and the solid phase is taken as Modified aluminum hydroxide product.

Embodiment 3

[0054] 1. Raw material preparation

[0055] Purchasing high-purity aluminum hydroxide, dissolving it in a water tank, steaming to raise temperature and heating to dissolve, to prepare aluminum hydroxide mother liquor, and then blending to a suitable concentration according to process requirements. (4T aluminum hydroxide is added to 8T deionized water to dissolve, raise the temperature to 120 degrees and stir to dissolve. After dissolution, a mother liquor with an alumina content of 350g / l is obtained. Then it is formulated according to the alumina content of 23g / l)

[0056] 2. Carbonization and decomposition

[0057] The mother liquor of aluminum hydroxide with a concentration of 25g / l of alumina content is pumped into the carbonization tower. After the compressed air flow is 250, liquid carbon dioxide is introduced. After gelation, the temperature is controlled to 20 degrees and the gelation time is 20. Minutes, a modified aluminum hydroxide slurry was prepared.

[0058] 3. Press fi...

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a novel porous high-specific-surface aluminum hydroxide material. The technical scheme is that the novel porous high-specific-surface aluminum hydroxide material is prepared bythe following steps: taking high-purity aluminum hydroxide as a raw material, and heating with deionized water under specific conditions for dissolving to obtain a mother solution containing aluminumhydroxide; then introducing a small amount of liquid carbon dioxide to serve as a precipitant, controlling parameters such as temperature, concentration and time, and enabling aluminum oxide in the solution to be crystallized and separated out in a hydrate form to obtain a required product crystal form; further drying and grinding to obtain a final series product of a novel porous high-specific-surface aluminum hydroxide material. The aluminum hydroxide material has the advantages of high purity, few impurities, stable pore volume of a product and higher activity; meanwhile, a preparation process of the novel porous high-specific-surface aluminum hydroxide material has the advantages of simplicity and convenience in decomposition and washing, lower energy consumption, effective improvementon production efficiency and great cost advantage. Besides, the novel porous high-specific-surface aluminum hydroxide material is suitable for production scale of annually producing 2,000 tons and meets the requirement of enlarging production capacity.

Description

Technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a new type of porous aluminum hydroxide material with a high specific surface. Background technique [0002] The new porous aluminum hydroxide material with high specific surface is a kind of non-toxic and odorless white colloid (wet product) or powder (dry product), which belongs to a series of new inorganic non-metal materials. The new porous aluminum hydroxide material with high specific surface is used as the raw material of catalyst, binder, desiccant and its carrier. It can be used in automobile exhaust three-way catalysis, environmental protection, medicine, refractory materials and other industries. It is a new type of automobile exhaust Catalyst and its carrier materials. [0003] In the prior art, there are three main types of large-scale preparation methods for new porous aluminum hydroxide materials with high specific surface: The first type is the ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02
CPCC01F7/023C01P2006/12C01P2006/14C01P2006/80C01P2006/82
Inventor 魏达
Owner 魏达
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com