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Method for preparing modified active carbon fiber used as filtering material to lower toxic matter from cigartte

A technology of activated carbon fibers and cigarettes, which is applied to e-liquid filter elements, fiber chemical characteristics, tobacco, etc. It can solve the problems of poor filtering effect, high cost, and impact on cigarette aroma, and achieve the effect of alcohol and harm reduction in smoke

Inactive Publication Date: 2009-05-20
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The United States and Japan have developed activated carbon fiber or composite activated carbon fiber cigarette filters. Although they have obvious filtering effects on tar, nicotine, fatty aldehydes, etc., they have poor filtering effects on strong carcinogens such as benzo[a]pyrene. , has almost no purification effect on CO
In addition, since it cannot reduce tar and nicotine proportionally, it has a greater impact on the aroma of cigarettes
Binary composite filter rods containing nano-precious metal catalytic materials have been developed in China and applied to cigarette production, aiming to reduce CO in cigarette smoke. scale application

Method used

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  • Method for preparing modified active carbon fiber used as filtering material to lower toxic matter from cigartte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: add ethylene glycol monomethyl ether in the titanium sulfate solution that the mass fraction of titanium sulfate is 2%, the addition amount of ethylene glycol monomethyl ether is 0.3% of the quality of titanium sulfate solution, add viscose base after stirring Activated carbon fiber (ACF), the amount of ACF added is 2% of the mass of the titanium sulfate solution, heated to 85°C, and after 1 hour, add a saturated solution of ammonium bicarbonate to adjust the pH value of the feed solution to 5-6, and use deionized Rinse with water until the pH reaches 6.5-7.5, take out the ACF and put it in an oven to bake at a constant temperature of 120°C for 1 hour, then place it in a muffle furnace under the protection of nitrogen (atmospheric pressure) and sinter at a temperature of 400°C for 1 hour , and then cooled to room temperature below 40°C. The obtained ACF was put into PdCl 2 and CuCl mixed aqueous solution, the mixed aqueous solution of PdCl 2 The mass fra...

Embodiment 2

[0013] Embodiment 2: in the titanium sulfate solution that titanium sulfate mass fraction is 2%, add ethylene glycol monomethyl ether, the add-on of ethylene glycol monomethyl ether is 0.4% of the quality of titanium sulfate solution, add activated carbon fiber ( ACF), the addition of ACF is 2.5% of the quality of the titanium sulfate solution, heated to 90 ° C, and after 1.5 hours, a saturated solution of ammonium bicarbonate was added to adjust the pH value of the feed liquid to 5 ~ 6, rinsed with deionized water to When the pH reaches 6.5-7.5, take out the ACF and put it in an oven to bake at a constant temperature of 130°C for 1.5 hours, then place it in a muffle furnace under the protection of nitrogen (atmospheric pressure) and sinter at a temperature of 450°C for 1.5 hours, then cool to room temperature below 40°C. The obtained ACF was put into PdCl 2 and CuCl mixed aqueous solution, the mixed aqueous solution of PdCl 2 The mass fractions of CuCl and CuCl are 0.04% an...

Embodiment 3

[0014] Embodiment 3: add ethylene glycol monomethyl ether in the titanium sulfate solution that titanium sulfate massfraction is 3%, the add-on of ethylene glycol monomethyl ether is 0.5% of the titanium sulfate solution quality, after stirring, add active carbon fiber ( ACF), the addition of ACF is 3% of the titanium sulfate solution quality, is heated to 95 ℃, adds the saturated solution of ammonium bicarbonate after 1.5 hours again, adjusts the pH value of feed liquid to 5~6, rinses with deionized water until When the pH reaches 6.5-7.5, take out the ACF and put it in an oven, bake it at a constant temperature of 150°C for 2 hours, put it in a muffle furnace under the protection of nitrogen (atmospheric pressure), and sinter at a temperature of 500°C for 1.5 hours, then cool to room temperature below 40°C. The obtained ACF was put into PdCl 2 and CuCl mixed aqueous solution, the mixed aqueous solution of PdCl 2 The mass fractions of CuCl and CuCl are 0.05% and 0.4%, respe...

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Abstract

A modified activated carbon fiber (ACF), TiO2-Pd-Cu based ACF, for filtering out the tar, nicotin, CO, benzo(a) pyrene, fatty aldehyde, etc from the smoke of cigarette is prepared through adding ethanediol monomether into the solution of titanium sulfate, stirring, adding ACF, heating, adding the saturated solution of ammonium dicarbonate, regulating pH value, baking ACF, sintering, cooling, immersing in the aqueous solution of PbCl2 and CuCl, baking and cooling.

Description

technical field [0001] The invention relates to a filter material for a cigarette filter tip and a preparation method thereof, in particular to a modified active carbon fiber used for cigarette filter harm reduction and a preparation method thereof. Background technique [0002] Cigarette smoke contains harmful substances such as tar and CO. At present, the contents of the above two components in most domestic flue-cured cigarettes are: 15-17mg / stick, 14-16mg / stick. On May 21, 2003, the "Framework Convention on Tobacco Control" was adopted at the 56th World Health Assembly. On November 10, 2003, the Chinese government signed the "Framework Convention on Tobacco Control". The Chinese government promised that cigarettes produced after July 1, 2004, with a tar content of more than 15 mg per stick will not enter the sales market; The average tar content of cigarettes is reduced to about 12 mg / stick. However, the tar not only contains some harmful substances, but also contains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/10A24D3/06D01F11/12
Inventor 张玉清庄磊顾中铸
Owner NANJING NORMAL UNIVERSITY