Cleaning preparation method of laminated composite metal hydroxide

A hydroxide, layered composite technology, applied in chemical instruments and methods, cobalt compounds, aluminum compounds, etc., can solve the problems of unavoidable by-product generation and washing process, and achieve low cost and energy consumption, simple process flow, The effect of saving water

Inactive Publication Date: 2012-10-03
BEIJING UNIV OF CHEM TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the preparation of LDHs precursors, which cannot avoid the generation of by-products and the washing process

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
  • Cleaning preparation method of laminated composite metal hydroxide
  • Cleaning preparation method of laminated composite metal hydroxide
  • Cleaning preparation method of laminated composite metal hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 4MgCO 3 ·Mg(OH) 2 ·5H 2 O, Mg(OH) 2 , Al(OH) 3 Mix according to the molar ratio of 1:11:8; take 87.6 g of the above mixture and place it in 800 g deionized water, add it to the rotary liquid film reactor, disperse it for 5 minutes at a speed of 5000 rpm, and transfer it to a closed reaction In the container, the temperature was raised to 180 °C under stirring conditions, the pressure was 1 Mpa, the stirring speed was 300 rpm, and the reaction was carried out for 6 hours. After centrifugation, the product was directly placed at 80 °C and dried for 8 hours, and the molecular formula was Mg 4 al 2 (OH) 12 CO 3 4H 2 O's LDHs products.

[0031] The results of elemental analysis using the Japan Shimadzu ICPS-7500 elemental analyzer show that the product contains Mg:Al=2:1, and the product does not contain Na + and other hetero ions.

Embodiment 2

[0033] 2ZnCO 3 ·3Zn(OH) 2 , Zn(OH) 2 , Al(OH) 3 Mix according to the molar ratio of 1:3:4 respectively, take 23.2 g of the above mixture and place it in 200 g deionized water, add it to the rotary liquid film reactor, disperse it for 5 minutes at a speed of 5000 rpm, and transfer it to the belt reflux device In the reactor, under the condition of stirring, heating under normal pressure and reflux reaction for 48 hours, the obtained product was centrifuged and directly placed in 80 ℃ and dried for 8 hours, and the molecular formula was Zn 4 al 2 (OH) 12 CO 3 4H 2 O's LDHs products.

Embodiment 3

[0035] NiCO 3 2Ni(OH) 2 4H 2 O, Ni(OH) 2 , Al(OH) 3 Mix according to the molar ratio of 1:1:2 respectively, take 46.9 g of the above mixture, place it in 800 g deionized water, add it to the rotary liquid film reactor, disperse it for 5 minutes at a speed of 5000 rpm, and transfer it to the closed reaction In the container, the temperature was raised to 180°C under stirring conditions, the pressure was 1Mpa, the stirring speed was 300 rpm, and the reaction was carried out for 12 hours. After centrifugation, the product was directly placed at 80°C and dried for 8 hours, and the molecular formula was Ni 4 al 2 (OH) 12 CO 3 4H 2 O's LDHs products.

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
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a cleaning preparation method of laminated composite metal hydroxide, wherein a general formula of chemical composition of the laminated composite metal hydroxide is M2+1-xM3+x(OH)2(An-)x/n.mH2O. The method uses hydroxide of divalent metal, basic carbonate or carbonate and the hydroxide of trivalent metal as raw materials to directly synthesize and prepare the laminated composite metal hydroxide with a regular structure by one step, wherein all the materials take part in the reaction to generate the target product without a by-product; the drying treatment can be carried out directly and the water resource is greatly saved. The method has the advantages of simple technological process, little device investment, low cost and energy consumption and no environmental pollution, and belongs to an environment-friendly technique.

Description

technical field [0001] The invention relates to a clean preparation method of layered composite metal hydroxide, which belongs to the field of preparation of inorganic functional materials. Background technique [0002] Layered double hydroxides (LDHs for short), also known as hydrotalcite, is an anionic layered material, and its chemical composition formula is: M 2+ 1-x m 3+ x (OH) 2 (A n- ) x / n mH 2 O, where M 2+ and M 3+ are divalent and trivalent metal cations, respectively, A n- is the interlayer anion, x is M 3+ / (M 2+ +M 3+ ) molar ratio, m is the quantity of crystal water. The type and composition ratio of the main layer of hydrotalcite, the type and quantity of interlayer objects, and the two-dimensional channel structure can be adjusted in a wide range according to the needs, so as to obtain materials with special structures and functions. The adjustable composition and structure of LDHs and the resulting multifunctionality make it a new type of mate...

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): C01F7/00C01F11/00C01G9/00C01G53/00C01G51/00
Inventor 李殿卿邓复平冯拥军唐平贵冯俊婷黄晶怡
Owner BEIJING UNIV OF CHEM TECH
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