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A kind of preparation method and application of silica aerogel nano-selenium composite material

A technology of silica and airgel, applied in chemical instruments and methods, applications, inorganic chemistry, etc., to achieve the effect of long storage time

Active Publication Date: 2022-07-01
酉西(龙岩)生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, materials combining silica airgel and nanoselenium have not been reported yet.

Method used

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  • A kind of preparation method and application of silica aerogel nano-selenium composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At room temperature, 5 parts of ethyl orthosilicate was added to a solution consisting of 80 parts of absolute ethanol and 20 parts of an aqueous hydrochloric acid solution with a pH of 3.0, and stirred for 50 minutes to obtain silane hydrolyzate 1.

Embodiment 2

[0030] At room temperature, 3 parts of ethyl orthosilicate was added to a solution consisting of 85 parts of absolute ethanol and 15 parts of an aqueous oxalic acid solution with a pH of 3.0, and stirred for 60 minutes to obtain silane hydrolyzate 2.

Embodiment 3～ Embodiment 8

[0031] Examples 3 to 8 are for the preparation of silica aerogel nano-selenium composites

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Abstract

The invention belongs to the technical field of composite materials, in particular to a preparation method and application of a silica aerogel nano-selenium composite material. In the present invention, selenate or selenite is added to the silane hydrolyzate for reduction to obtain nano-selenium, and then ammonia water is added to make the silane hydrolyzate gel, and the silica aerogel nanometer is obtained after aging, replacement, modification and drying. The selenium composite material takes silica aerogel as a carrier and supports nano selenium on it. The silica aerogel of the present invention can be applied to the filter tip, cut tobacco and cigarette paper of cigarettes, so as to reduce the harmful effects of cigarettes on the human body.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a preparation method and application of a silica aerogel nano-selenium composite material. Background technique [0002] Silica aerogel is a new type of nanoporous material, and its application in cigarettes has been reported. [0003] Nano selenium has strong antioxidant properties and can be used in cigarettes to eliminate the damage of free radicals to the human body. [0004] However, materials combining silica aerogel and nano-selenium have not been reported. SUMMARY OF THE INVENTION [0005] The purpose of the present invention is to overcome the defects of the prior art and provide a preparation method of a silica aerogel nano-selenium composite material. [0006] Another object of the present invention is to provide an application of a silica aerogel nano-selenium composite material. [0007] The technical scheme of the present invention is as follows: [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/158C01B19/02A24B15/28
CPCC01B33/1585C01B19/02A24B15/287
Inventor 林泽伟
Owner 酉西(龙岩)生物科技有限责任公司