Flower-like MxWO3/SiO2 loaded composite aerogel particle and preparation method thereof

A composite airgel and composite gel technology, which is applied in the field of preparation of flower-shaped MxWO3/SiO2 composite airgel particles, can solve problems that have not been reported, and achieve high pore volume and adsorption capacity, good adsorption/light The effect of catalytic degradation of pollutants and broad application prospects

Active Publication Date: 2020-08-28
DALIAN POLYTECHNIC UNIVERSITY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently the in situ synthesis process is used to prepare the loaded flower-like M x WO 3 Nanoparticles of SiO 2 The study of composite airgel has not been reported yet

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
  • Flower-like MxWO3/SiO2 loaded composite aerogel particle and preparation method thereof
  • Flower-like MxWO3/SiO2 loaded composite aerogel particle and preparation method thereof
  • Flower-like MxWO3/SiO2 loaded composite aerogel particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] A loaded flower-like M x WO 3 / SiO 2 The preparation method of composite airgel particle comprises the following process steps:

[0034] ①Dissolve tungstate in water to obtain a tungstate solution with a concentration of 0.01-5mol / L;

[0035] ②Dissolve silicate into water to obtain a silicate solution with a concentration of 0.01-5mol / L;

[0036] ③Convert the prepared tungstate solution and silicate solution into tungstic acid solution and silicic acid solution respectively by cation exchange method;

[0037] ④Measure a certain volume of silicic acid solution and tungstic acid solution, mix under stirring conditions, and add a certain amount of M salt and inducer, stir and mix evenly, and prepare a mixed sol;

[0038] ⑤Aging the mixed sol at a temperature of 20-90°C until it turns into a gel;

[0039] ⑥ Place the composite gel block in absolute ethanol or ethanol aqueous solution, and age at 20-60°C for 1-24 hours;

[0040] ⑦ Select an appropriate solvent as the r...

Embodiment 1

[0057] Example 1 Preparation of loaded flower-like Cs with Si / W molar ratio = 5:1 0.5 WO 3 SiO 2 composite airgel

[0058] ① Preparation of silicic acid and tungstic acid solutions by ion exchange method

[0059] The preparation of silicic acid: put the industrial water glass with a modulus of 3.0 into V 水玻璃 :V 水 =1:4 diluted with deionized water, and then ion-exchanged through a styrene-based cation-exchange resin to obtain silicic acid with a pH of 2 to 3;

[0060] Preparation of tungstic acid: first weigh 19.791g sodium tungstate dihydrate and dissolve in 80mL deionized water to prepare Na 2 WO 4 solution, and then undergo ion exchange through a styrene-based cation exchange resin to obtain a tungstic acid solution with a concentration of 0.75mol / L and a pH of 1.5-3.

[0061] ②Preparation of mixed sol and gel

[0062] Under stirring conditions, weigh 30mL of silicic acid solution, 9.36mL of tungstic acid solution, 0.6351g of cesium sulfate, and 8.3189g of citric aci...

Embodiment 2

[0071] Example 2 Preparation of loaded flower-like Cs with Si / W molar ratio = 3:1 0.5 WO 3 SiO 2 composite airgel

[0072] ① Preparation of silicic acid and tungstic acid solutions by ion exchange method is the same as step ① in Example 1.

[0073] ②Preparation of mixed sol and gel

[0074] Under stirring conditions, weigh 25mL of silicic acid solution, 13mL of tungstic acid solution, 0.7942g of cesium carbonate, and 3.44g of oxalic acid and mix in sequence to prepare a mixed sol; place the mixed sol in a 60°C water bath to make it gel.

[0075] ③ Composite gel aging and solvothermal reaction are the same as step ③ in Example 1.

[0076] Place the composite gel in 50% ethanol aqueous solution, and age at 25°C for 24 hours; then measure 50mL of ethanol to prepare a gel block reaction solution, place the composite gel block in the reaction liquid, and react at 190°C After 72h, the solvothermal reaction was completed.

[0077] ④The modification and atmospheric pressure dryi...

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a flower-like MxWO3 / SiO2 loaded composite aerogel particle, and belongs to the technical field of new materials and energy conservation and environmental protection. The preparation method of the flower-like MxWO3 / SiO2-loaded composite aerogel particle comprises the following steps: mixing a silicic acid solution and a tungstic acid solution, addingan M salt and an inducer, and uniformly stirring and mixing to prepare a mixed sol; carrying out aging treatment on the mixed sol; and putting the aged composite gel into a reaction solution, reacting at 120-400 DEG C for 5-96 h, carrying out modification, and carrying out normal-pressure drying. The preparation method is low in raw material and process cost, short in production period and low inproduction equipment requirement, the aerogel production efficiency can be improved, and large-scale industrial production can be achieved conveniently.

Description

technical field [0001] The invention relates to a load flower-like M x WO 3 / SiO 2 The invention discloses a method for preparing composite airgel particles, which belongs to the technical field of new materials, energy conservation and environmental protection. Background technique [0002] With the development of society and the improvement of productivity, the energy crisis and environmental pollution are becoming more and more serious, and energy saving and consumption reduction and environmental purification are increasingly concerned by the whole society. Reducing the energy consumption of buildings is one of the main ways to save energy and reduce emissions, and windows are an important medium for indoor and outdoor energy exchange. The preparation of a transparent heat-insulating film on the surface of the glass can achieve the ideal heat-insulating performance of the glass while ensuring a certain visible light transmittance, and the photocatalytic technology 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 Applications(China)
IPC IPC(8): B01J13/00
CPCB01J13/0091
Inventor 史非刘敬肖杨静媛宋晓颖
Owner DALIAN POLYTECHNIC UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap