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Low-cost preparation method of micro/nano structural copper chloride hydroxide aerogel materials

A technology of copper chloride and nanostructure, applied in chemical instruments and methods, colloid chemistry, colloid chemistry, etc., can solve problems such as difficulty in forming a three-dimensional network structure, consumption of large organic solvents, difficulty in airgel preparation, etc., and achieve low cost , raw materials are easy to obtain, and the effect of solving the problem of low-cost preparation

Inactive Publication Date: 2012-08-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many metal alkoxides are expensive or even extremely difficult to obtain
Divalent metal oxides (such as divalent oxides of copper, nickel, cadmium, manganese, cobalt and other elements) are difficult to form a three-dimensional network structure, which makes the preparation of airgel very difficult
[0004] However, the above-mentioned basic copper chloride airgel needs to consume a large amount of organic solvents in the preparation process, and needs to adopt a supercritical drying process of low temperature or high temperature combined with high pressure, and the cost is extremely high
At present, there are no literature and patent reports on the method of synthesizing basic copper chloride airgel materials without a large amount of organic solvents and supercritical drying methods

Method used

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  • Low-cost preparation method of micro/nano structural copper chloride hydroxide aerogel materials
  • Low-cost preparation method of micro/nano structural copper chloride hydroxide aerogel materials
  • Low-cost preparation method of micro/nano structural copper chloride hydroxide aerogel materials

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Effect test

Embodiment 1

[0023] Example 1: Preparation of basic cupric chloride airgel-based material under normal pressure and natural drying under the condition of pure water solvent

[0024] The ratio of copper chloride, deionized water, polyacrylic acid and propylene oxide is 6 mmol: 15 ml: 1 ml: 1 ml (organic solvent is 0 ml), and each reactant is added in turn under the condition of sufficient stirring, static A gel was obtained after settling. The gel is directly placed in the air and dried naturally under normal pressure until the quality is not significantly reduced, and then the bulk basic copper chloride airgel-based material can be obtained.

Embodiment 2

[0025] Embodiment 2: Preparation of basic copper chloride airgel-based material

[0026] The ratio of copper chloride, methanol, deionized water, polyacrylic acid and ethylene oxide is 6 mmol: 60 ml: 0.5 ml: 0.5 ml: 1 ml, add each reactant in turn under the condition of full stirring, and let stand Then get the gel. After the gel was replaced by methanol three times, it was dried by supercritical fluid, and the block-shaped basic copper chloride airgel-based material was finally obtained.

Embodiment 3

[0027] Embodiment 3: Preparation of basic copper chloride airgel-based material

[0028] The ratio of copper chloride, acetone, deionized water, polyacrylic acid and epichlorohydrin is 6 mmol: 10 ml: 30 ml: 5 ml: 10 ml, add each reactant in turn under the condition of full stirring, and let stand Then get the gel. After the gel is washed with water and replaced by solvent, it is freeze-dried to finally obtain the basic copper chloride airgel-based material in the form of pieces or powder.

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Abstract

The invention belongs to the technical field of preparation of micro / nano structural materials and particularly relates to a low-cost preparation method of micro / nano structural copper chloride hydroxide aerogel materials. In the low-cost preparation method, an inorganic dispersion sol-gel method is adopted, i.e., various micro / nano structural copper chloride hydroxide aerogel materials are prepared through a sol-gel process combined with a drying technology, by taking cheap copper chloride solution as precursor, polyacrylic acid as dispersing agent and template agent, and epoxide as a gel accelerator. The low-cost preparation method has the characteristics of cheap and easily-obtained materials, simple reaction process, short reaction period, low total cost and the like; the materials obtained by the method have multilevel micrometer and nanometer microstructures and also integrate high activity and high stability, and the properties of the materials also can be improved by the complexation of polyacrylic acid; and the micro / nano structural copper chloride hydroxide aerogel materials can be used in the fields of agricultural bactericide, feed additive, catalyst, pigment and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of micro / nano structure materials, and specifically relates to a polyacrylic acid complexed basic copper chloride airgel material which may be applied to high-performance agricultural fungicides, feed additives, catalysts and pigments. Cost preparation method. Background technique [0002] Basic copper chloride (Cu 2 (OH) 3 Cl, or copper oxychloride) is widely used in agricultural fungicides, feed additives, catalysts and pigments. Usually, commercial basic copper chloride is prepared by mineral extraction or chemical precipitation, and is generally a crystalline dense powder of tens of μm or more. Airgel is a kind of highly dispersed solid material composed of nanoscale ultrafine particles or polymer molecules aggregated to form a nanoporous network, and filled with a gaseous dispersion medium in the pores. Its typical structure is a nanoscale multi-level fractal network skeleton. This st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
Inventor 杜艾周斌许维维沈军倪星元吴广明张志华高国华
Owner TONGJI UNIV