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A method and application of improving activated carbon slow-release performance of essence

A slow-release performance, activated carbon technology, applied in the fields of application, essential oil/fragrance, chemical instruments and methods, etc., can solve the problems of poor reproducibility, poor desorption and slow-release effect, etc., to increase adsorption capacity and desorption capacity, Good slow-release effect, enhanced surface polarity effect

Active Publication Date: 2022-02-11
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent (201410843396.6) discloses the application of hydrochloric acid modified activated carbon in the preparation of slow-release or controlled-release of tobacco flavor. The problem of poor sustained release effect

Method used

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  • A method and application of improving activated carbon slow-release performance of essence
  • A method and application of improving activated carbon slow-release performance of essence
  • A method and application of improving activated carbon slow-release performance of essence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of carbon quantum dots: 0.2 g of urea phosphate, 0.3 g of citric acid and 0.8 mL of ethylenediamine were dissolved in 25 mL of deionized water. Then the above solution was transferred to a microwave digestion tank, sealed and placed in a microwave digestion apparatus. The temperature program was set as follows: the reaction temperature was raised to 150° C. within 1 min, and the temperature was kept constant for 30 min. After cooling to room temperature, the obtained clear and transparent solution was centrifuged at 10,000 rpm for 15 minutes, and the supernatant was dried in a vacuum oven at 60° C. for 12 hours to obtain the product.

[0034] (2) Acidified activated carbon: Take 100g of activated carbon, soak it in 300mL 0.1mol / L HCl solution for 2h, place it in a water bath at room temperature and shake it for 12h, rinse with distilled water until the surface of the activated carbon is neutral, carry out suction filtration, and dry at 100°C for 3h, name...

Embodiment 2

[0038] (1) Preparation of carbon quantum dots: 0.5 g of urea phosphate, 0.6 g of citric acid and 0.9 mL of ethylenediamine were dissolved in 50 mL of deionized water. Then the above solution was transferred to a microwave digestion tank, sealed and placed in a microwave digestion apparatus. The temperature program was set as follows: the reaction temperature was raised to 150° C. within 1 min, and the temperature was kept constant for 30 min. After cooling to room temperature, the obtained clear and transparent solution was centrifuged at 10,000 rpm for 15 minutes, and the supernatant was dried in a vacuum oven at 60° C. for 24 hours to obtain the product.

[0039] (2) Acidified activated carbon: Take 100g of activated carbon and add it to 400mL 0.1mol / L HNO 3 After soaking in the solution for 2 hours, shake it in a water bath at room temperature for 20 hours, rinse with distilled water until the surface of the activated carbon is neutral, perform suction filtration, and dry ...

Embodiment 3

[0043](1) Preparation of carbon quantum dots: 0.4 g of urea phosphate, 0.5 g of citric acid and 1.0 mL of ethylenediamine were dissolved in 40 mL of deionized water. Then the above solution was transferred to a microwave digestion tank, sealed and placed in a microwave digestion apparatus. The temperature program was set as follows: the reaction temperature was raised to 150° C. within 1 min, and the temperature was kept constant for 30 min. After cooling to room temperature, the obtained clear and transparent solution was centrifuged at 10,000 rpm for 15 minutes, and the supernatant was dried in a vacuum oven at 60° C. for 20 hours to obtain the product.

[0044] (2) Acidified activated carbon: Take 100g of activated carbon and add 0.1mol / L HNO to 500mL 3 After soaking in the solution for 2 hours, shake in a water bath at room temperature for 15 hours, rinse with distilled water until the surface of the activated carbon is neutral, perform suction filtration, and dry at 100°...

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Abstract

The invention discloses a method and application for improving the slow-release performance of activated carbon on essence. In the present invention, the activated carbon is first acidified so that its surface has acidic groups such as hydroxyl and carboxyl groups, and then the water-soluble carbon quantum dots, acidified activated carbon and liquid essence are mixed. The dispersion in the essence increases the types of adsorption sites and the penetration of the essence into the activated carbon, which is convenient for adsorption; during desorption, the specific surface area and pore volume of the activated carbon after acidification increase, so the release rate also increases relatively, while the surface of the activated carbon Quantization does not affect the adsorption of activated carbon on essence, but also weakens the adsorption and binding force of activated carbon on the surface of essence, which improves the slow release ability. The modified active carbon adsorption essence prepared by the method is used in cigarette filters, and when the temperature is 45-65°C, the aroma can be released stably and uniformly, and has a good slow-release effect.

Description

technical field [0001] The invention belongs to the technical field of slow-release essence preparation, and in particular relates to a method and application for improving the slow-release performance of activated carbon on essence. Background technique [0002] The aroma and aroma of cigarettes and the release of aroma during smoking are an important factor in evaluating the quality of cigarettes. Aroma directly affects consumers' sense of smell and taste of cigarettes. The effect of adding flavors and fragrances in cigarettes is to improve the physical and chemical characteristics of cigarettes, round aroma, modify fragrance, improve smoking taste and establish the style of products. Among the many flavoring technologies, the method of adding adsorbent to the filter has attracted the attention of researchers because of its advantages in realizing the controllability of flavor storage and release, ensuring the purity of flavors, and making full use of flavors. Among them,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C11B9/02A24B3/12A24B15/18A24D3/02
CPCB01J20/20A24B3/12A24B15/18A24D3/02C11B9/02B01J20/30
Inventor 冯守爱刘鸿黄江锋韦康胡志忠李志华农李政宁振兴邹克兴潘连华黄宇亮陈义昌宋凌勇白家峰黄东业薛云
Owner CHINA TOBACCO GUANGXI IND
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