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

Alumino silica gel and preparation method thereof

A technology of silica-alumina glue and aluminum salt, which is applied in the field of silica-alumina glue, can solve the problems that the pore volume and strength cannot be balanced, and the silica content of silica-alumina glue is low, so as to achieve uniform skeleton structure and strength, good product quality, Effect with a wide adjustment range

Active Publication Date: 2018-05-18
QINGDAO MAKALL GROUP CO LTD
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a silica-alumina gel and a preparation method thereof, which solves the problems in the prior art that the silica content of the silica-alumina gel is low and the specific surface area, pore volume and strength cannot be balanced

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022]The preparation method of a kind of silica-alumina gel of the present invention comprises the following steps: 1) take aluminum salt and raw material acid, mix, add water, make the acid solution of aluminum salt, make the mass concentration of aluminum salt be 1-20%, raw material The mass concentration of the acid is 5-45%; take agaricine and add water to make a sodium hydroxide solution with a mass concentration of 5-25%; 2) add the agaricine solution obtained in step 1) to step 1) In the obtained acid solution, the volume ratio of the sodium hydroxide solution and the acid solution is 15-18:5-7, and the sol-gel reaction is carried out at 15-45°C, the reaction pressure is 0.05-1.5MPa, and the pH value after the reaction is 2.5-8.5 to obtain a gel; 3) aging the gel obtained in step 1), exchanging acid treatment, washing with water, ammonia treatment, and drying to obtain silica-alumina gel.

[0023] Concrete him, described step 1) the resulting gel has a balling distance...

Embodiment 1

[0031] A kind of preparation method of silica-alumina gel of the present invention, comprises the following steps:

[0032] 1) Take aluminum salt and raw material acid, mix, add water, make the acid solution of aluminum salt, make the mass concentration of aluminum salt be 8%, the mass concentration of raw material acid is 15%; Mass concentration is 10% natronine solution;

[0033] 2) Add the sodium hydroxide solution obtained in step 1) to the acid solution obtained in step 1), the volume ratio of the sodium hydroxide solution and the acid solution is 15:5, place it in the reactor, and carry out the sol-gel reaction, the temperature The temperature is 35°C, the reaction pressure is 0.34Mpa, the pH value after the reaction is 6.5, and the gel is obtained, and the balling distance of the gel is 3m;

[0034] 3) Aging treatment is carried out on the gel obtained above, the temperature is 35° C., and the aging time is 2 hours;

[0035] 4) The above-mentioned aged gel is subjecte...

Embodiment 2

[0041] A kind of preparation method of silica-alumina gel of the present invention, comprises the following steps:

[0042] 1) Get aluminum salt and sulfuric acid, mix, add water, make the acid solution of aluminum salt, make the mass concentration of aluminum salt be 12%, the mass concentration of sulfuric acid is 10.5%; Get natron, add water, make mass concentration It is a 14.5% sodium hydroxide solution;

[0043] 2) Add the sodium hydroxide solution obtained in step 1) to the acid solution obtained in step 1), the volume ratio of the sodium hydroxide solution and the acid solution is 18:7, place it in the reactor, and carry out the sol-gel reaction, the temperature The temperature is 31°C, the reaction pressure is 0.36Mpa, and the pH value after the reaction is 7.0. At the end of the reaction, the pH value of the water in the receiver is 9.0, and the temperature of the water is 40°C. A gel is obtained, and the balling distance of the gel is 1m;

[0044] 3) Carry out agin...

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
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses alumino silica gel and belongs to the technical field of alumino silica gel. In the alumino silica gel, mass content of Al2O3 is 3-8%, and mass content of SiO2 is not lower than 82%; specific surface area of the alumino silica gel is 300-550m2 / g, pore volume is 0.6-1.0mL / g, and compressive strength is not lower than 50N. The invention further discloses a preparation methodof the alumino silica gel. The preparation method includes: subjecting sodium silicate, aluminum salt and raw material acid to sol-gel process, aging, exchange acid treatment, water washing, ammoniumtreatment and drying to obtain the alumino silica gel. The alumino silica gel is wide in silicon-aluminum ratio adjusting range, large in pore volume and specific surface area, high in compressive strength, uniform in framework structure and strength and stable in quality; the preparation method is simple in process and convenient in operation and can be widely used in the field of catalyst and catalyst carriers, adsorption and separation and molecular sieve preparation.

Description

technical field [0001] The invention belongs to the technical field of silica-alumina glue, in particular to a silica-alumina glue and a preparation method thereof. Background technique [0002] Silica-alumina glue is a kind of silica gel containing alumina, the chemical formula is mSiO 2 ·nAl 2 o 3 ·xH 2 O, which is chemically stable, non-combustible, and insoluble in any solvent, is mainly used for catalysts and catalyst carriers in the petrochemical industry, and is also used in dryers, liquid adsorbents, and gas separation in industry. [0003] The preparation method of silica-alumina gel in the prior art mainly contains three kinds: 1) sol-gel method adds aluminum salt, and in the silica-alumina gel obtained by this method, the coordination bond of the silica-aluminum chemical bond is stable, the skeleton structure is stable, and the product strength is high , a stable skeleton structure is conducive to the adjustment of the pore structure and the loading of the cat...

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): C01B33/26B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B33/2807C01P2006/12C01P2006/14C01P2006/17
Inventor 李斌杰孙明成
Owner QINGDAO MAKALL GROUP CO LTD
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