A kind of preparation method of continuous cellulose-nanometal composite aerogel fiber

Abstract

The invention provides a method for manufacturing continuous cellulose-nano-metal composite airgel fibers, which includes the following steps: preparing a cellulose dispersion as a spinning stock solution, and then adding a nano-metal catalyst; adding acidic solution and ethanol solution to the coagulation tank. Or an acetone solution is used as a coagulation bath; the spinning stock solution after adding the nanocatalyst is added to the coagulation bath, and wet spinning is performed to obtain cellulose gel fibers containing nanometal catalysts; cellulose gel fibers containing nanometal catalysts are Coil, immerse in the aging solution and age at room temperature for 15 minutes to 1 hour, wash with deionized water until neutral, then use deionized water, ethanol or tert-butanol for solvent replacement, and dry to obtain continuous cellulose-with catalytic properties. Nano-metal composite airgel fiber. The manufacturing method of continuous cellulose-nano metal composite airgel fiber provided by the invention has the characteristics of wide source of raw materials, low cost, simple preparation process, green and pollution-free, and good spinnability.

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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