Supercharge Your Innovation With Domain-Expert AI Agents!

A three-dimensional nanorod al 2 o 3 @Molecular sieve shell-core composite material and its preparation method

A nano-molecular sieve and three-dimensional nano-technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, silicon compounds, etc., can solve the problems of increasing catalyst transmission diffusivity, catalyst carbon deposition deactivation, low reaction conversion rate, etc., to achieve load improvement Sexual effect and stability, simple preparation method, and the effect of increasing the mesopore specific surface area

Active Publication Date: 2020-06-19
WUHAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small pore size, it brings problems such as poor transmission and diffusion, which leads to a series of problems such as low reaction conversion rate and carbon deposition deactivation of the catalyst. One strategy to solve this problem is to synthesize a multi- The zeolite molecular sieve material with hierarchical channels, that is, introducing mesopores into the original microporous system, can not only maintain the original strong acidity and stability of the zeolite molecular sieve, but also shorten the transmission path, and further increase the transmission and diffusion of the catalyst.

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
  • A three-dimensional nanorod al <sub>2</sub> o <sub>3</sub> @Molecular sieve shell-core composite material and its preparation method
  • A three-dimensional nanorod al <sub>2</sub> o <sub>3</sub> @Molecular sieve shell-core composite material and its preparation method
  • A three-dimensional nanorod al <sub>2</sub> o <sub>3</sub> @Molecular sieve shell-core composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A three-dimensional nanorod Al 2 o 3 @Molecular sieve shell-core composite material, its preparation method includes the following steps:

[0036] 1) Synthesis of microporous nano-molecular sieves: 5.7g TPAOH (40wt%) and 10g TEOS were added to 16g deionized water, stirred for 3h, and mixed uniformly to obtain a clear solution I, which was poured into a reaction kettle and crystallized at 100°C. After 24 hours, remove the sample, wash it, dry it, and place it in a muffle furnace at 550°C for 7 hours to obtain a microporous nanomolecular sieve material;

[0037] 2) Add 0.25 g of the obtained microporous nano-molecular sieve material into 40 mL of isopropanol, and disperse uniformly by ultrasonication for 3 hours under sealed conditions to obtain a mixed liquid II;

[0038] 3) Add 1 g of aluminum sec-butoxide to the mixed solution II, stir for 30 minutes, and mix well to obtain mixed solution III (a mixed solution of aluminum sec-butoxide / molecular sieve);

[0039] 4) S...

Embodiment 2

[0043] A three-dimensional nanorod Al 2 o 3 @Molecular sieve shell-core composite material, its preparation method includes the following steps:

[0044] 1) Synthesis of microporous nano-molecular sieves: 5.7g TPAOH (40wt%), 10g silica sol (30wt%) were added into 16g deionized water, stirred for 2h, mixed uniformly to obtain a clear solution I, this solution was poured into the reactor, Crystallize at 100°C for 24 hours, remove the sample, wash it, dry it, and bake it in a muffle furnace at 550°C for 6 hours to obtain a microporous nanomolecular sieve material;

[0045] 2) Add 0.2 g of the obtained microporous nano-molecular sieve material into 50 mL of isopropanol, and disperse uniformly by ultrasonication for 3 hours under sealed conditions to obtain a mixed liquid II;

[0046] 3) Add 1 g of aluminum sec-butoxide to the mixed solution II, stir for 30 minutes, and mix well to obtain mixed solution III (a mixed solution of aluminum sec-butoxide / molecular sieve);

[0047] 4)...

Embodiment 3

[0053] A three-dimensional nanorod Al 2 o 3 @Molecular sieve shell-core composite material, its preparation method includes the following steps:

[0054] 1) the synthesis of microporous nano-molecular sieve: with 5.5g TPAOH (40wt%), 3g white carbon black (industrial nano-SiO 2 ) into 15 g of deionized water, stirred for 4 hours, and mixed uniformly to obtain a clear solution I. Pour the solution into a reaction kettle, crystallize at 110°C for 20 hours, remove the sample, wash it, dry it, and bake it in a muffle furnace at 550°C 6h, to obtain microporous nano-molecular sieve material;

[0055] 2) Add 0.3 g of the obtained microporous nano-molecular sieve material into 50 mL of isopropanol, and disperse evenly by ultrasonication for 3 hours under sealed conditions to obtain a mixed liquid II;

[0056] 3) Add 1.2 g of aluminum sec-butoxide to the mixed solution II, stir for 25 minutes, and mix well to obtain mixed solution III (mixed solution of aluminum sec-butoxide / molecula...

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
sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a three-dimensional nanorod-shaped Al 2 O 3 @Molecular sieve core-shell composite material, its preparation steps include: first preparing molecular sieve nanoparticles; fully mixing the obtained molecular sieve nanoparticles and aluminum source to disperse in an anhydrous solvent system, and finally adding dropwise the mixed solution of molecular sieve and aluminum source to a certain amount of In the solution of aqueous medium, by adjusting the hydrolysis conditions of the aluminum source (temperature, stirring conditions, etc.), three-dimensional nanorod-shaped Al can be obtained. 2 O 3 And attached to the surface of the nanomolecular sieve to form a three-dimensional nanorod-shaped Al 2 O 3 @Molecular sieve core-shell composite materials. The composite material of the present invention has a multi-level pore mesoporous-microporous system, which has great structural advantages over single-channel materials, and the synthesis method involved is simple and easy to simulate and scale up production under industrial conditions. It is useful in molecular adsorption, catalysis, etc. It has great application prospects in the industrial field.

Description

technical field [0001] The invention belongs to the field of inorganic composite materials, in particular to a three-dimensional nanorod Al 2 o 3 @Molecular sieve shell-core composite material and its preparation method. Background technique [0002] Zeolite molecular sieve is a crystalline solid catalyst with uniform micropores. Because of its uniform micropore structure, excellent mechanical stability and hydrothermal stability, it is widely used in petrochemical, fine chemical and other fields. However, due to the small pore size, it brings problems such as poor transmission and diffusion, which leads to a series of problems such as low reaction conversion rate and carbon deposition deactivation of the catalyst. One strategy to solve this problem is to synthesize a multi- The zeolite molecular sieve material with hierarchical channels, that is, introducing mesopores into the original microporous system, can not only maintain the original strong acidity and stability of ...

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 Patents(China)
IPC IPC(8): B01J20/10B01J20/30B01J20/28B01J29/035B01J33/00B01J35/02B01J35/10B01J32/00B01J35/00
CPCB01J20/08B01J20/103B01J20/28021B01J20/28078B01J20/2808B01J29/035B01J33/00B01J2220/4812B01J2220/4806B01J2220/42B01J2229/34B01J35/50B01J35/64B01J35/643
Inventor 陈丽华彭钊汪建南孙明慧冯文静苏宝连
Owner WUHAN UNIV OF TECH
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