Preparation method of continuous cellulose-nanometal composite aerogel fibers

Abstract

The invention provides a preparation method of continuous cellulose-nanometal composite aerogel fibers. The method comprises steps as follows: a cellulose dispersion liquid is prepared to serve as a spinning solution, and a nanometal catalyst is added; an acidic solution, an ethanol solution or an acetone solution is added to a coagulating basin to serve as a coagulating bath; the spinning solution with the nano catalyst added is added to the coagulating bath for wet spinning, and cellulose gel fibers containing the nanometal catalyst is obtained; the cellulose gel fibers containing the nanometal catalyst are wound, immersed in an ageing solution to be aged at the normal temperature for 15 min-1 h, washed with deionized water to be neutral, then subjected to solvent replacement with deionized water, ethanol or tertiary butanol and dried, and the continuous cellulose-nanometal composite aerogel fibers with catalytic performance are obtained. The preparation method of the continuous cellulose-nanometal composite aerogel fibers has the characteristics that the raw materials are widely sourced, the cost is low, the preparation process is simple, environment-friendly and pollution-free, and the spinnability is good.

Description

technical field [0001] The invention belongs to the field of airgel preparation, and in particular relates to a preparation method of continuous cellulose-nano metal composite airgel fiber. The continuous cellulose-nano metal composite airgel fiber has catalytic function. Background technique [0002] A catalyst is a class of substances that alter the rate of a chemical reaction without itself entering into the molecular makeup of the final product. In practical applications, catalytically active components such as gold, silver, platinum, palladium, etc. are often expensive and have low utilization rates. In order to improve the catalytic efficiency of catalysts and reduce the amount of catalytically active components, the catalytically active components are loaded on the carrier. The carrier can make the catalyst have a certain shape, size and mechanical strength, and can disperse the active components on the surface of the carrier to obtain a higher specific surface area a...

AI Technical Summary

Problems solved by technology

Compared with bulk and film-like materials, fibrous materials further increase the contact area with monochloroacetic acid, and at the same time, the diffusion resistance and transmission distance of monochloroacetic acid in the material are greatly reduced, making it easier to contact palladium with the catalytic active center , improve the catalytic efficiency, and the zero-dimensional catalytic material may lead to agglomeration during use, and it is not easy to separate completely, which is easy to cause secondary pollution

[0005] At present, there is no report on the method of in-situ adding nano-metals to prepare continuous cellulose-nano-metal composite airgel fibers with catalytic properties.

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