MOFs (metal organic frameworks) material for cigarette filter and preparation method and application of MOFs material

A technology for filters and cigarettes, which is applied in applications, e-liquid filter elements, separation methods, etc. It can solve the problems of affecting the flavor and taste of cigarettes and low efficiency, and achieve adjustable light irradiation intensity, less damage, and mild light irradiation intensity. Effect

Inactive Publication Date: 2020-01-17
CHINA TOBACCO ANHUI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these materials can achieve the purpose of absorbing harmful smoke, they have problems such as low efficiency and affecting the flavor and taste of cigarettes.

Method used

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  • MOFs (metal organic frameworks) material for cigarette filter and preparation method and application of MOFs material
  • MOFs (metal organic frameworks) material for cigarette filter and preparation method and application of MOFs material
  • MOFs (metal organic frameworks) material for cigarette filter and preparation method and application of MOFs material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, the MOFs material PTA-Fe used for cigarette filters was synthesized according to the following steps:

[0040] (1) Under stirring conditions, add 220mL DMF, 0.2mol terephthalic acid and 0.1mol Fe(OH) to the reactor at a uniform rate. 2 , The total feeding time is 10min, and after the feeding is completed, continue to stir until uniform, the stirring speed is 300r / min, and the stirring time is 30min;

[0041] Continue to add activator hydrochloric acid to the reactor under stirring conditions for 10 minutes to obtain a mixed reaction liquid;

[0042] (2) Perform light irradiation on the mixed reaction solution, the light irradiation intensity is 365nm, the light irradiation time is 10h, and then cooled to room temperature, the resulting product is centrifuged to obtain a solid product;

[0043] (3) The solid product is subjected to solvent removal treatment in the air at a temperature of 180° C. and a time of 2 hours to obtain a solid powdery target product fo...

Embodiment 2

[0046] In this example, the MOFs material PTA-Mn for cigarette filters was synthesized according to the following steps:

[0047] (1) Under stirring conditions, add 200mL DMF, 0.21mol terephthalic acid and 0.1mol Mn(OH) to the reactor at a uniform rate. 2 , The total feeding time is 5min, and after the feeding is completed, continue to stir until uniform, the stirring speed is 200r / min, and the stirring time is 20min;

[0048] Continue to add the activator pyruvic acid to the reactor under stirring conditions for 60 min to obtain a mixed reaction liquid;

[0049] (2) Perform light irradiation on the mixed reaction solution, the light irradiation intensity is 420nm, the light irradiation time is 12h, and then cooled to room temperature, the resultant product is centrifuged to obtain a solid product;

[0050] (3) The solid product is subjected to solvent removal treatment in air at a temperature of 220° C. and a time of 3 hours to obtain a solid powdery target product for use in the MOFs...

Embodiment 3

[0053] In this example, the MOFs material PTA-Zn used for cigarette filters was synthesized according to the following steps:

[0054] (1) Under stirring conditions, add 160mL DMF, 0.11mol terephthalic acid and 0.05mol ZnO to the reactor in sequence at a uniform rate. The total feeding time is 5min. After the feeding is completed, continue to stir until uniform, the stirring speed is 260r / min, stirring time is 12min;

[0055] Continue to add nitric acid, an activator, to the reactor under stirring conditions for 20 minutes to obtain a mixed reaction liquid;

[0056] (2) Perform light irradiation on the mixed reaction solution, the light irradiation intensity is 450nm, the light irradiation time is 20h, and then cooled to room temperature, the resultant product is centrifuged to obtain a solid product;

[0057] (3) The solid product is subjected to solvent removal treatment in the air at a temperature of 240° C. and a time of 3 hours to obtain a solid powdery target product for use in...

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Abstract

The invention discloses a MOFs (metal organic frameworks) material for a cigarette filter and a preparation method and application of the MOFs material. The MOFs material for the cigarette filter is prepared by taking terephthalic acid and metal oxides or metal hydroxides as raw materials, adding an activator, and by performing a light irradiation process in a DMF (dimethyl formamide) solution through one-step photochemistry synthesis. The MOFs material disclosed by the invention not only is capable of achieving efficient adsorption of toxic gases in cigarette smoke, but also achieves the purpose of catalytic degradation of the toxic gases, has dual roles, and thus is capable of effectively reducing the harm of cigarettes to human bodies.

Description

Technical field [0001] The invention belongs to the field of reducing tar and harm to cigarette filters, and in particular relates to a MOFs material for cigarette filters and a preparation method and application thereof. Background technique [0002] Excessive use of cigarettes not only causes certain harm to humans, but also the toxic gases emitted during smoking, such as tar, carbon monoxide, and ammonia, can also cause serious pollution to the environment. Therefore, improving the safety of cigarettes and reducing the emission of harmful smoke has been put on the agenda, and has become a matter of close attention to the relevant technical departments of international cigarettes, and it is also an inevitable requirement for the development of my country's cigarette industry. In addition, with the establishment of the "poke reduction and harm reduction" strategy, low-tar, low-harm cigarettes will become the mainstream of cigarettes in the future. Selectively reducing harmful c...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/22B01J20/22B01J20/30B01D53/04A24D3/16
CPCA24D3/16B01D53/04B01D2257/406B01D2257/502B01J20/226B01J31/2239B01J2531/16B01J2531/26B01J2531/72B01J2531/842B01J2531/845B01J2531/847C08G83/008
Inventor 佘世科陈祥迎汪华刘浩朱栋梁陈刚张亚平
Owner CHINA TOBACCO ANHUI IND CO LTD
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