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

Needle shaped nanometer zeolite material prepared from metakaolin, and method and applications thereof

A nano-zeolite, metakaolin technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of limited types of pollutants, insufficient ability to remove pollutants, and ability to remove organic pollutants. Not strong and other issues, to achieve the effect of obvious social and environmental benefits

Active Publication Date: 2018-07-31
ZHEJIANG UNIV OF TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the ability of the prepared zeolite material to remove pollutants from wastewater is not strong enough; the types of pollutants removed are limited, mainly limited to heavy metal pollutants, and the removal mechanism is ion exchange; the removal ability of organic pollutants is not strong

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
  • Needle shaped nanometer zeolite material prepared from metakaolin, and method and applications thereof
  • Needle shaped nanometer zeolite material prepared from metakaolin, and method and applications thereof
  • Needle shaped nanometer zeolite material prepared from metakaolin, and method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 5.0 g of metakaolin powder, mix with 30 mL of 2 mol / L sodium hydroxide solution, stir and react for 30 min to obtain a suspension slurry. The reaction solution was transferred to a stainless steel reactor for sealed storage, and then placed in an oven at 180° C. for hydrothermal reaction for 20 h. After the reaction product is cooled to room temperature, repeat centrifugation washing with deionized water three times. The test conditions of centrifugal washing are: centrifuge at 8000r / min for 5min, and dry the final product in an oven at 105°C for 6h to obtain needle-shaped Nano zeolite material, scanning electron microscope picture as figure 1 and 2 shown. figure 1 The raw material of metakaolin is sheet or layered structure, and after adding sodium hydroxide through hydrothermal reaction, the morphology of the raw material is changed from figure 1 The sheet-like structure in figure 2 needle-like nanostructures in , and the composition is transformed into zeo...

Embodiment 2

[0029] Treatment of organic pollutant waste water: take by weighing the needle-shaped nano-zeolite material prepared in Example 1 with a weight of 0.1g, add 50mL of aniline solution or trichloroaniline solution with an initial concentration of 400mg / L respectively, at a speed of 200 rpm Equilibrium reaction on a shaker for 10 h, the pH of the reaction solution is 7.2, and the reaction temperature is 25 ° C, the adsorption kinetic curves of acicular nano-zeolite materials for aniline and trichloroaniline are as follows image 3 shown. Depend on image 3 It can be seen that the needle-shaped nano-zeolite material reaches the adsorption equilibrium in about 1 hour, and the maximum adsorption capacities for aniline and trichloroaniline are: 142.95mg / g and 138.93mg / g, respectively.

Embodiment 3

[0031] Treatment of organic pollutant wastewater: weigh 0.1g of metakaolin, add them to 50mL of aniline solution or trichloroaniline solution with an initial concentration of 400mg / L, and equilibrate the reaction on a shaking table with a rotation speed of 200r / min for 10h. The pH of the reaction solution was 7.2, and the reaction temperature was 25° C., and the adsorption kinetic curves of metakaolin to aniline and trichloroaniline were obtained. The maximum adsorption capacities of metakaolin for aniline and trichloroaniline are 19.16mg / g and 18.53mg / g, respectively.

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
Maximum adsorption capacityaaaaaaaaaa
Maximum adsorption capacityaaaaaaaaaa
Maximum adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a needle shaped nanometer zeolite material prepared from metakaolin, and a method and applications thereof. The preparation method comprises following steps: metakaolin powderand a sodium hydroxide solution are mixed, stirring reaction is carried out so as to obtain a suspension slurry, the suspension slurry is introduced into a stainless steel reaction vessel, and is sealed; the stainless steel reaction vessel is introduced into a baking oven for hydro-thermal reaction at 180 DEG C for 20h, an obtained reaction product is cooled to room temperature, is subjected to deionized water washing and centrifugation for three times, a product obtained via washing is dried in the baking oven for 6h at 105 DEG C so as to obtain the needle shaped nanometer zeolite material. The needle shaped nanometer zeolite material can be used for treatment of organic pollutant wastewater and heavy metal wastewater. According to the preparation method, low cost clay mineral is adoptedto prepare zeolite material high in additional value, and the needle shaped nanometer zeolite material is used in treatment of wastewater containing heavy metal pollutants and organic pollutants, so that a difficult problem of metakaolin resource utilization is solved, purifying treatment of high concentration waste water is realized, and obvious social benefit and environment benefit are achieved.

Description

technical field [0001] The invention relates to a needle-shaped nano-zeolite material prepared from metakaolin, a method and application thereof. Background technique [0002] Metakaolin is based on kaolin (Al 2 o 3 2SiO2 2 2H 2 O) as raw material, anhydrous aluminum silicate (Al 2 o 3 2SiO2 2 ). Kaolin belongs to layered silicate structure, and the layers are combined by van der Waals bonds, OH - Ions are more firmly bound in it. When kaolin is heated in the air, several structural changes will occur. When heated to about 600°C, the layered structure of kaolin will be destroyed due to dehydration, forming a transition phase with poor crystallinity, namely metakaolin. Since the molecular arrangement of metakaolin is irregular, it presents a thermodynamic metastable state and has gelation property under proper excitation. [0003] Metakaolin is a highly active mineral admixture. It is an amorphous aluminum silicate formed by calcining ultrafine kaolin at low tempera...

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): C01B33/26B82Y40/00B82Y30/00B01J20/30C02F1/28B01J20/16C02F101/38C02F101/36C02F101/20
CPCB01J20/165B01J20/30B82Y30/00B82Y40/00C01B33/28C01P2004/10C02F1/281C02F2101/20C02F2101/36C02F2101/38
Inventor 罗宏伟
Owner ZHEJIANG UNIV OF TECH
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