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Novel mesoporous material for absorbing granule phase substance, coke tar, phenol and amine nitrite in mainstream flue gas of tobacco

A technology of mainstream smoke and mesoporous materials, applied in tobacco, smoke oil filter elements, applications, etc., can solve the problems of poor adsorption of nitrosamines, complicated steps, high cost, etc., to improve adsorption capacity, simplify preparation procedures, and save energy Effect

Inactive Publication Date: 2009-05-20
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steps of these modification methods are complicated, the cost is high, and the adsorption of nitrosamines in flue gas is poor.
[0005] Due to the limitation of pore size, even though mesoporous molecular sieves have been modified to improve their adsorption capacity for small molecules, they still cannot be used to adsorb particles with a particle size of μm, such as particulate matter in cigarette smoke, and particles in the air. Dust, and suspended solids in sewage, etc.

Method used

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  • Novel mesoporous material for absorbing granule phase substance, coke tar, phenol and amine nitrite in mainstream flue gas of tobacco
  • Novel mesoporous material for absorbing granule phase substance, coke tar, phenol and amine nitrite in mainstream flue gas of tobacco
  • Novel mesoporous material for absorbing granule phase substance, coke tar, phenol and amine nitrite in mainstream flue gas of tobacco

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] At room temperature, 3g P123(EO 20 PO 70 EO 20 ) was dissolved in a solution of 90 g of 2M HCl and 22.5 g of water. After P123 is completely dissolved, adjust the temperature of the water bath to 40°C, add 6.38g of tetraethyl orthosilicate (TEOS) under vigorous stirring, then continue stirring at 40°C for 24h, and finally age at 100°C for 24h, cool, filter, and wash , room temperature to dry. The obtained raw powder was calcined at 500° C. for 5 hours to obtain SBA-15. In the above system, a series of SBA-15 materials with different morphologies can be obtained by using different silicon sources at different rotational speeds, marked as MxSy (M1 refers to the use of orthoethyl silicate (TEOS) as a silicon source, M2 refers to Use orthomethyl silicate (TMOS), M3 refers to the use of sodium silicate (Na 2 SiO 3 ) as a silicon source; S1 means that the speed is 75r min -1 , S2 means the speed is 150r·min -1 , S3 means the speed is 300r·min -1 ). Among them, SBA-1...

Embodiment 2

[0027] 0.184g zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O) Dissolved in 10g of deionized water, then slowly added dropwise to 1g of M2S1 powder, and finally dried at room temperature. The resulting solid was roasted at 500°C for 5 hours to obtain a sample loaded with zirconia, denoted as 5% ZrO 2 / M2S1. Gained sample is confirmed as SBA-15 mesoporous molecular sieve through technologies such as X-ray diffraction (XRD) and electron microscope and low-temperature nitrogen adsorption, and its pore structure data is listed in the following table 1, and scanning electron microscope photograph is as follows figure 1 As shown, it proves that the morphology does not change after loading zirconia.

[0028] Table 2 The effect of adding SBA-15 samples with different morphologies on the content of conventional substances in mainstream smoke.

[0029]

Embodiment 3

[0031] Sieve block-shaped M1S1 and M2S1 and thin rod-shaped M3S1 samples directly, and sieve other samples after tableting, take 20-40 mesh particle samples, and add 15 mg / cigarette to the filter rods of flue-cured tobacco type a sample cigarettes , Smoking was performed on a type A smoking machine to detect the changes in the weight of total particulate matter, tar, nicotine, water and carbon monoxide (CO) in the smoke. The data are listed in Table 2.

[0032] The results show that the massive M1S1 and M2S1 samples can reduce the total particulate matter, tar and nicotine content in the smoke by about 20% and 40% respectively; among them, the M2S1 sample with a three-dimensional network structure and monolithic morphology has the best effect .

[0033] Table 3 The effect of adding different SBA-15 samples on the content of conventional substances in mainstream smoke.

[0034]

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Abstract

The invention discloses a novel mesoporous material for adsorbing tar, phenol and special nitrosamine in tobacco and so on, in mainstream smoke of the tobacco. The mesoporous material with high adsorption property is used as an addition material for filter tips of cigarettes; and the mesoporous material is a mesoporous molecular sieve with a three-dimensional mesh microstructure and monolithic appearance such as SBA-15,or is a SBA-15 mesoporous molecular sieve material which is plated with a liquid film or is modified by metal oxides such as zirconia and is provided with the three-dimensional mesh microstructure and the monolithic appearance. The invention adopts a more convenient and effective method to develop the SBA-15 mesoporous molecular sieve material with the three-dimensional mesh microstructure and the monolithic appearance and modify the surface / a surface layer, has good performance of intercepting environmental toxins such as interception particulate phase matters and phenol in smoke, has the characteristics of saving energy, saving time, and reducing environmental pollution during the preparation, can also reduce cost, and has remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to a new mesoporous material, specifically a kind of mesoporous molecular sieve material which is obtained by controlling the morphology of the mesoporous molecular sieve material and combined with surface modification and modification, and is used for adsorbing particulate matter, tar, phenol and tobacco in mainstream tobacco smoke. New mesoporous materials with unique substances such as nitrosamines. Background technique [0002] Mesoporous materials are formed by using surfactants as templates, using physical and chemical processes such as sol-gel, emulsion or microemulsion, and assembled through the interface between organic and inorganic substances. inorganic porous materials. In its hydrothermal synthesis process, the organic template agent uses hydrophobic groups to form a "sphere center" and forms a "spherical surface" with hydrophilic groups through long chains to form micelles to guide and form a pore structure. Genera...

Claims

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Application Information

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IPC IPC(8): B01J20/10A24D3/16
Inventor 朱建华周瑜杨菁高玲杨佳园魏峰王英
Owner NANJING UNIV
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