KR102373179B1 - Cigarette filter for toxic gas decomposition - Google Patents

Abstract

The present invention decomposes toxic gas substances contained in cigarette smoke and induces resynthesis into low-toxic substances to reduce the toxicity of cigarette smoke, a cigarette filter for reducing toxic gas substances, and an organic substance decomposition catalyst As a manufacturing method, the organic material decomposition catalyst according to the present invention comprises: an adsorbent for adsorbing toxic gas substances; and a decomposition accelerator that decomposes a toxic gas substance and induces resynthesis into a low-toxic gas substance, wherein the adsorbent is any one or a combination of a metal oxide-based adsorbent and a mineral-based adsorbent, and the decomposition accelerator is a metal salt characterized in that

Description

Cigarette filter for toxic gas decomposition

The present invention relates to a cigarette filter that reduces toxic gas substances, and more particularly, can reduce the toxicity of cigarette smoke by decomposing toxic gas substances contained in cigarette smoke and inducing resynthesis into low toxic substances It relates to a cigarette filter that reduces toxic gas substances.

Cigarettes are made up of more than 500 substances (Tobacco Blend & Additives), and it is said that more than 7,000 chemicals are produced when a cigarette is burned. The substances contained in cigarette smoke are composed of gaseous substances such as benzene and formaldehyde, liquid substances such as nicotine and tar, and solid substances such as chromium (Cr) and cadmium (Cd). At least 60 of these chemicals are cancer-causing, and many of them are toxic.

It is said that these toxic substances can harm almost all organs of a smoker. For example, these toxic substances are a major cause of cancer types such as lung cancer, chronic obstructive pulmonary disease, and heart disease. In addition, nicotine contained in cigarettes is very addictive, forcing smokers to smoke. Ultimately, about 50% of smokers die as a result of smoking as the direct cause of death. According to a 2009 report from the World Health Organization (WHO), 8 million people worldwide die each year from direct smoking and 1.2 million people die from secondhand smoke. In addition, smoking by pregnant women is a major cause of premature birth, low birth weight, and abnormal births.

On the other hand, various types of cigarette filters have been proposed to filter out toxic substances in cigarettes. Currently, commercial cigarette filters use cellulose acetate, activated carbon, charcoal, and the like. For example, a filter made of cellulose acetate, a filter in which cellulose acetate is mixed with a carbon material such as activated carbon, charcoal, and a cigarette filter in which a carbon material is inserted between the filter and the filter are suggested, and filters combining these various types are also provided. It is applied to cigarette filters.

Despite the various configurations of these cigarette filters, a recent study found that these cigarette filters or 'Light cigarette' with reduced nicotine content had little effect in reducing lung cancer (NCI, 2001; IARC 83, 2004; US Surgeon) General, 2004). However, depending on the configuration of the filter, it was possible to reduce the content of solid substances with large molecular sizes or liquid substances such as tar and nicotine by 50%. However, it has been found that a tobacco filter composed of a combination of the above adsorbents has little effect on the removal of gaseous substances having a small molecular size.

In other words, the major cancer-causing substances in cigarette smoke are unfortunately Acrolein (CH2=CHCHO), Formaldehyde (HCHO), Acrylonitrile (CH2=CH-C≡N), 1,3-butadiene (CH2=CH-CH=CH2), Gases such as Acetaldehyde (CH3CHO), Ethylene oxide (CH4O), Isoprene (C5H8), etc. (Food Chem. Toxicol. 49(11):2921-33, 2011) It can be said that removal of the material is impossible.

Korean Patent No. 2077430, Korean Patent No. 1702966, Korean Patent Publication No. 2019-0094176, Korean Patent Publication No. 2017-0060810, Korean Patent No. 1420500, etc. A filter is disclosed.

Korean Patent No. 2077430 Korean Patent No. 1702966 Korean Patent Publication No. 2019-0094176 Korean Patent Publication No. 2017-0060810 Korean Patent No. 1420500

The present invention has been devised to solve the above problems, and it is possible to decompose toxic gas substances contained in cigarette smoke and induce resynthesis into low toxic substances to reduce the toxicity of cigarette smoke. It is an object of the present invention to provide a cigarette filter that reduces cigarette smoke.

The tobacco filter for reducing toxic gas substances according to the present invention for achieving the above object is made to include cellulose and an organic substance decomposition catalyst, the organic substance decomposition catalyst is an adsorbent for adsorbing toxic gas substances, and decomposes toxic gas substances It is composed of a decomposition accelerator that induces resynthesis into low-toxic gaseous substances, and the adsorbent is characterized in that it is any one of a metal oxide-based adsorbent and a mineral-based adsorbent, or a combination thereof.

In addition, the cigarette filter for reducing toxic gas substances according to the present invention comprises a first filter and a second filter, the first filter is a filter made of cellulose, and the second filter is a mixture of cellulose and an organic material decomposition catalyst filter, and the organic material decomposition catalyst is composed of an adsorbent that adsorbs toxic gas substances, and a decomposition accelerator that decomposes toxic gas substances to induce resynthesis into low-toxic gas substances, and the adsorbent is a metal oxide-based adsorbent or a mineral-based adsorbent. It is characterized in that it is any one or a combination thereof.

In addition, the cigarette filter for reducing toxic gas substances according to the present invention is a front-end filter; post filter; and an organic material decomposition catalyst interposed between the front-end filter and the rear-end filter, wherein the front-end filter or the rear-end filter is any one of a filter made of cellulose, a filter in which cellulose and an organic material decomposition catalyst are mixed, and the organic material decomposition catalyst is composed of an adsorbent that adsorbs a toxic gas substance, and a decomposition accelerator that decomposes a toxic gas substance to induce resynthesis into a low-toxic gas substance, and the adsorbent is any one of a metal oxide-based adsorbent and a mineral adsorbent, or a combination thereof Another feature.

The decomposition accelerator is a metal salt.

The decomposition accelerator is a metal salt containing a nitrate ion, a metal salt containing a phosphate ion, a metal salt containing a sulfate ion, a metal salt containing a chloride ion, a metal salt containing a fluoride ion, a metal salt containing a carbonate ion, any one or these is a combination of

The metal salt containing the nitrate ion is calcium nitrate (Ca(NO ₃ ) ₂ ), zinc nitrate (Zn(NO ₃ ) ₂ ), iron nitrate Ⅲ (Fe(NO ₃ ) ₃ ), or a combination thereof. In addition, the metal salt containing the phosphate ion is aluminum phosphate (AlPO4), iron phosphate III (FePO ₄ ), copper phosphate (Cu ₃ (PO ₄ ) ₂ ), zinc phosphate (Zn ₃ (PO ₄ ) ₄ ), magnesium phosphate (Mg ₃ (PO ₄ ) ₂ ) or a combination thereof. The metal salt containing the sulfate ion is sodium sulfate (Na ₂ SO ₄ ), potassium sulfate (K ₂ SO ₄ ), calcium sulfate (CaSO ₄ ), manganese sulfate (MnSO ₄ ), nickel sulfate (NiSO ₄ ), copper sulfate (CuSO ₄ ) ), cobalt sulfate (CoSO ₄ ), magnesium sulfate (MgSO ₄ ), iron sulfate II (FeSO ₄ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ), or a combination thereof. The metal salt containing the chloride ion is aluminum chloride (AlCl ₃ ), titanium chloride (TiCl ₄ ), calcium chloride (CaCl ₂ ) Any one or a combination thereof. In addition, the metal salt containing the fluoride ion is calcium fluoride (CaF ₂ ), barium fluoride (BaF ₂ ), any one or a combination thereof, and the metal salt containing the carbonate ion is calcium carbonate (CaCO ₃ ). there is.

The decomposition accelerator includes sodium sulfate (Na ₂ SO ₄ ) and nickel sulfate (NiSO ₄ ), zinc nitrate (Zn(NO ₃ ) ₂ ), manganese sulfate (MnSO _{4 ), cobalt sulfate (CoSO 4 )} , titanium chloride (TiCl ₄ ), calcium carbonate (CaCO ₃ ), copper phosphate (Cu ₃ (PO ₄ ) ₂ ), magnesium phosphate (Mg ₃ (PO ₄ ) ₂ ), or a combination thereof.

The metal oxide-based adsorbent is cesium oxide (CeO ₂ ), vanadium oxide (V ₂ O ₅ ), zinc oxide (ZnO), titanium oxide (TiO ₂ ), nickel oxide (NiO), cobalt oxide (CoO), copper oxide (CuO) ), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ) Any one or a combination thereof.

In addition, the mineral-based adsorbent is basalt, granite, sandstone, limestone, shale, metamorphic rock, attapulgite (attapulgite), montmorillonite (montmorillonite), bentonite (bentonite), kaolinite (kaolinite), any one of zeolite (zeolite) or Tobacco filter to reduce toxic gas substances, characterized in that the combination.

The adsorbent may be included in an amount of 10 to 95% based on the total weight of the organic decomposition catalyst. In addition, the decomposition accelerator may be included in 5 to 90% of the total weight of the organic material decomposition catalyst.

In a filter comprising cellulose and an organic material decomposition catalyst, the organic material decomposition catalyst may be mixed in a ratio of 5 to 30% based on the weight of the cellulose.

A carbon body is included in a filter made of cellulose or a filter made of cellulose and an organic material decomposition catalyst, and the carbon body is any one of activated carbon powder and charcoal powder, or a combination thereof. In addition, the carbon body may be mixed up to 50% based on the weight of the cellulose.

The cigarette filter for reducing toxic gas substances according to the present invention has the following effects.

By applying an organic material decomposition catalyst consisting of an adsorbent and a decomposition accelerator to a cigarette filter, it is possible to effectively decompose and remove toxic gaseous substances such as cancer-causing substances contained in tobacco smoke.

1 is a reference diagram showing the decomposition of a toxic gas substance by a combination of a toxic gas substance and an organic substance decomposition catalyst and an electron exchange reaction.
Figure 2 is a block diagram of a cigarette filter for reducing toxic gas substances according to an embodiment of the present invention.
3 is a block diagram of a cigarette filter for reducing toxic gas substances according to another embodiment of the present invention.
4 is a block diagram of a cigarette filter for reducing toxic gas substances according to another embodiment of the present invention.
5 is a reference diagram for explaining a method of manufacturing an organic material decomposition catalyst according to an embodiment of the present invention.
6 is a schematic diagram of an organic gaseous compound decomposition experimental apparatus.

The present invention relates to a technique for alleviating the toxicity of toxic gas substances contained in cigarette smoke by applying an organic decomposition catalyst to a cigarette filter.

The organic decomposition catalyst decomposes toxic gaseous substances contained in cigarette smoke and induces resynthesis into low-toxic gaseous substances. As toxic gas substances, as mentioned in the 'Technology Background to the Invention', acrolein (CH ₂ =CHCHO), formaldehyde (HCHO), acrylonitrile (CH ₂ =CH-C≡N), 1 Cancer-causing substances such as ,3-butadiene (CH ₂ =CH-CH=CH ₂ ), acetaldehyde (CH ₃ CHO), ethylene oxide (CH ₄ O), and isoprene (C ₅ H ₈ ) are included.

The organic material decomposition catalyst consists of a combination of an adsorbent and a decomposition accelerator. The adsorbent plays a role of adsorbing toxic gas substances, and the decomposition accelerator serves to decompose the adsorbed toxic gas substances and induce resynthesis into low-toxic gas substances. The adsorbent and the decomposition accelerator are physically or chemically combined, and the adsorbent and the decomposition accelerator may be mixed. Such an organic material decomposition catalyst can be applied to the cigarette filter in various ways, which will be described in detail through the following examples.

Hereinafter, a cigarette filter for reducing toxic gas substances according to an embodiment of the present invention will be described in detail.

The organic material decomposition catalyst applied to the tobacco filter of the present invention decomposes toxic gas substances contained in tobacco smoke and induces resynthesis into low-toxic gas substances.

The organic material decomposition catalyst consists of an adsorbent and a decomposition accelerator. The adsorbent and the decomposition accelerator may form a physically or chemically combined form or may form a mixed form. The organic material decomposition catalyst composed of an adsorbent and a decomposition accelerator is manufactured through a predetermined manufacturing process, and the method for preparing the organic material decomposition catalyst will be described later.

In the organic material decomposition catalyst, the adsorbent serves to adsorb toxic gas substances contained in tobacco smoke, and the decomposition accelerator decomposes the toxic gas material adsorbed on the organic material decomposition catalyst to resynthesize into low-toxic gas substances. serves to induce Here, the toxic gas substances contained in cigarette smoke are acrolein (CH ₂ =CHCHO), formaldehyde (HCHO), acrylonitrile (CH ₂ =CH-C≡N), 1,3-butadiene (CH ₂ = CH-CH=CH ₂ ), acetaldehyde (CH ₃ CHO), ethylene oxide (CH ₄ O), isoprene (C ₅ H ₈ ) Any one or a combination thereof, or various other substances contained in cigarette smoke in addition to the above substances It can mean toxic gaseous substances.

As the adsorbent, a material capable of adsorbing an organic gas material is applied, and a metal oxide-based adsorbent or a mineral-based adsorbent may be applied. For reference, toxic gas substances contained in cigarette smoke correspond to organic gas substances including carbon and hydrogen.

Metal oxide-based adsorbents and mineral-based adsorbents each or a mixture thereof can be applied as adsorbents for organic material decomposition catalysts, and according to the experimental results described below, when metal oxide-based adsorbents are applied to organic material decomposition catalysts, they exhibit relatively excellent decomposition properties of toxic gas substances.

The metal oxide-based adsorbent includes cesium oxide (CeO ₂ ), vanadium oxide (V ₂ O ₅ ), zinc oxide (ZnO), titanium oxide (TiO ₂ ), nickel oxide (NiO), cobalt oxide (CoO), copper oxide ( CuO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ) Any one or a combination thereof is available, and the mineral adsorbent includes basalt, granite, sandstone, limestone, shale, metamorphic rock, attapulgite (attapulgite), montmorillonite (montmorillonite), bentonite (bentonite), kaolinite (kaolinite), any one or a combination of zeolite (zeolite) is available.

Meanwhile, as described above, the organic material decomposition catalyst consists of an adsorbent and a decomposition accelerator, and the adsorbent and the decomposition accelerator are physically or chemically combined. Therefore, adsorption of a toxic gas substance to the adsorbent means adsorption to the organic substance decomposition catalyst, and the toxic gas substance adsorbed to the organic substance decomposition catalyst achieves a state in which a chemical reaction with the decomposition accelerator is possible.

The adsorbent of the present invention, particularly the metal oxide-based adsorbent, has the ability to decompose toxic gaseous substances without the presence of a decomposition accelerator. Toxic gaseous substances (RO-H) adsorbed on the metal oxide adsorbent (MOM ^{+ δ} -O ^-δ ) form a double bond of hydrogen and coordination with the metal oxide adsorbent (MOM +δ -O ^-δ ). In the state, an electron exchange reaction occurs between the toxic gas substance (RO ^-δ -H ^+δ ) and the metal oxide-based adsorbent (MOM ^+δ -O ^-δ ), and the toxic gas substance (RO ^{- δ} -H ^+δ ) is decomposed into RO· and H· (see FIG. 1 ).

However, the decomposition reaction of the toxic gas substance by the adsorbent (eg, metal oxide-based adsorbent) proceeds at a very slow rate. On the other hand, when a decomposition accelerator other than the adsorbent is involved in the electron exchange reaction between the above-described toxic gas substance (RO ^-δ -H ^+δ ) and the metal oxide-based adsorbent (MOM ^+δ -O ^-δ ), the electron exchange reaction is activated and the toxic gas substance decomposition is promoted. In addition, since the tobacco smoke passing through the cigarette filter has a temperature of about 60°C, the decomposition of toxic gas substances can be further promoted by the presence of the decomposition accelerator and the temperature condition of about 60°C.

As described above, there are various cancer-causing substances as toxic gas substances adsorbed to organic decomposition catalysts. As follows.

As described in Scheme 1 below, formaldehyde (HCHO) adsorbed in the form of double bonds of hydrogen and coordination bonds to the adsorbent of the organic decomposition catalyst is methanol (CH ₃ OH) and carbon monoxide ( CO), and in this process, the decomposition accelerator activates an electron exchange reaction to promote the decomposition of formaldehyde (HCHO) into methanol (CH ₃ OH). Subsequently, methanol (CH ₃ OH) is converted into dimethoxymethane (CH ₂ (OCH ₃ ) ₂ ) (see Schemes 2 to 3) and finally converted into water and carbon dioxide (see Schemes 4 to 6), respectively In the process of conversion, the decomposition accelerator plays a role in accelerating the corresponding reaction.

(Scheme 1) 2CH ₂ O → CH ₃ OH + CO

(Scheme 2) CH ₃ OH → CH ₃ O + H

(Scheme 3) CH ₃ OH + 2CH ₃ O. → 2CH ₂ (CH ₃ O) ₂ + H ₂ O

(Scheme 4) 4H· + O2 → 2H ₂ O

(Scheme 5) 2CO + O ₂ → 2CO ₂

(Scheme 6) 2CH ₃ OH + 3O ₂ → 2CO ₂ + 4H ₂ O

In the present invention, a metal salt is used as the decomposition accelerator. Specifically, the metal salt includes a metal salt containing a nitrate ion, a metal salt containing a phosphate ion, a metal salt containing a sulfate ion, a metal salt containing a chloride ion, a metal salt containing a fluoride ion, and a carbonate ion.

In addition, the metal salt containing nitrate ions is calcium nitrate (Ca(NO ₃ ) ₂ ), zinc nitrate (Zn(NO ₃ ) ₂ ), iron nitrate Ⅲ (Fe(NO ₃ ) ₃ ) Any one or a combination thereof , metal salts containing phosphate ions are aluminum phosphate (AlPO4), iron phosphate III (FePO ₄ ), copper phosphate (Cu ₃ (PO ₄ ) ₂ ), zinc phosphate (Zn ₃ (PO ₄ ) ₄ ), magnesium phosphate (Mg) ₃ (PO ₄ ) ₂ ) of any one or a combination thereof, and the metal salt containing sulfate ions is sodium sulfate (Na ₂ SO ₄ ), potassium sulfate (K ₂ SO ₄ ), calcium sulfate (CaSO ₄ ), manganese sulfate ( MnSO ₄ ), nickel sulfate (NiSO ₄ ), copper sulfate (CuSO ₄ ), cobalt sulfate (CoSO ₄ ), magnesium sulfate (MgSO ₄ ), iron sulfate II (FeSO ₄ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ) any one or a combination thereof, and the metal salt containing chloride ions is any one or a combination of aluminum chloride (AlCl ₃ ), titanium chloride (TiCl ₄ ), calcium chloride (CaCl ₂ ), and a metal salt containing fluoride ions Silver is calcium fluoride (CaF ₂ ), barium fluoride (BaF ₂ ), any one or a combination thereof, the metal salt containing carbonate ions may be calcium carbonate (CaCO ₃ ).

As the decomposition accelerator of the present invention, any one of the above metal salt containing nitrate ion, metal salt containing phosphate ion, metal salt containing sulfate ion, metal salt containing chloride ion, metal salt containing fluoride ion, and metal salt containing carbonate ion One or a combination thereof may be used.

In constituting the organic material decomposition catalyst according to the present invention, as described above, any one of a metal oxide-based adsorbent and a mineral-based adsorbent or a combination thereof is used as the adsorbent, and various metal salts can be used as the decomposition accelerator, toxic gas substances The following combinations can be used to more effectively decompose

That is, in a specific embodiment, the organic material decomposition catalyst may preferentially use a metal oxide-based adsorbent as the adsorbent. In addition, the decomposition accelerator includes sodium sulfate (Na ₂ SO ₄ ), zinc nitrate (Zn(NO ₃ ) ₂ ), copper phosphate (Cu ₃ (PO ₄ ) ₂ ), magnesium phosphate (Mg ₃ (PO ₄ ) ₂ ) ), manganese sulfate (MnSO ₄ ), nickel sulfate (NiSO ₄ ), cobalt sulfate (CoSO ₄ ), titanium chloride (TiCl ₄ ), calcium carbonate (CaCO ₃ ) It is preferred to use one or a combination thereof. can be

Further, in a more specific embodiment, the decomposition accelerator in the first embodiment may be composed of a combination of sodium sulfate (Na ₂ SO ₄ ) and nickel sulfate (NiSO ₄ ), and in the second embodiment, the decomposition accelerator is sodium sulfate (Na ₂ SO 4 ) ₄ ) and zinc nitrate (Zn(NO ₃ ) ₂ ). In addition, in the third embodiment, the decomposition accelerator may be composed of a combination of sodium sulfate (Na ₂ SO ₄ ) and manganese sulfate (MnSO ₄ ), and in the fourth embodiment, the decomposition accelerator is sodium sulfate (Na ₂ SO ₄ ) and cobalt sulfate (CoSO ₄ ) It can be composed of a combination. In the fifth embodiment, the decomposition accelerator may be composed of a combination of sodium sulfate (Na ₂ SO ₄ ) and titanium chloride (TiCl ₄ ), and in the sixth embodiment, the decomposition accelerator is sodium sulfate (Na ₂ SO ₄ ) and calcium carbonate (CaCO) ₃ ) can be combined. In addition, in the seventh embodiment, the decomposition accelerator may be composed of a combination of sodium sulfate (Na ₂ SO ₄ ) and copper phosphate (Cu ₃ (PO ₄ ) ₂ ), and in the eighth embodiment, the decomposition accelerator is sodium sulfate (Na ₂ ) SO ₄ ) and magnesium phosphate (Mg ₃ (PO ₄ ) ₂ ) It may be composed of a combination.

Referring to the experimental results to be described later, the decomposition efficiency of toxic gas substances is the best when the organic substance decomposition catalyst according to the first embodiment is applied. It shows a tendency to decrease in efficiency.

On the other hand, in constituting the organic material decomposition catalyst, the adsorbent is contained in an amount of 10 to 95% based on the total weight of the organic material decomposition catalyst, and the decomposition accelerator is 5 to 90% based on the total weight of the organic material decomposition catalyst.

As described above, the organic material decomposition catalyst is prepared through a manufacturing method described later. The prepared organic material decomposition catalyst is in the form of a powder by pulverization, and the particle size of the powder may be adjusted to an average particle size of 0.1 mm.

The organic material decomposition catalyst according to an embodiment of the present invention may be applied to a cigarette filter in various ways. Specifically, as shown in FIG. 2 , a cigarette filter may be constituted by mixing the organic material decomposition catalyst 11 with the cellulose 12 constituting the conventional cigarette filter. The cellulose 12 is generally made of cellulose acetate, but the cellulose 12 constituent material is not limited to cellulose acetate. Here, the organic material decomposition catalyst 11 is mixed in the form of a powder, the particle diameter of the powder may be an average particle diameter of about 0.1mm.

In mixing the cellulose 12 and the organic material decomposition catalyst 11, the organic material decomposition catalyst 11 may be mixed in a ratio of 5 to 30% based on the weight of the cellulose 12. In addition, a carbon body in addition to the organic material decomposition catalyst 11 may be additionally mixed with the cellulose 12 . The carbon body is any one of activated carbon powder, charcoal powder, or a combination thereof, and the carbon body may be mixed up to 50% based on the weight of the cellulose 12 .

As another embodiment of the cigarette filter, as shown in FIG. 3 , a cigarette filter may be configured by a combination of the first filter 310 and the second filter 320 . The first filter 310 is a filter made of cellulose 12 , and the second filter 320 is a filter in which the cellulose 12 and the organic material decomposition catalyst 11 are mixed. The carbon material may be additionally mixed in the second filter 320 . In the second filter 320, the organic material decomposition catalyst 11 is mixed in a ratio of 5 to 30% based on the weight of the cellulose 12, and when the carbon body is additionally mixed, the carbon body is up to 50% based on the weight of the cellulose 12 can be mixed up to

As another embodiment of the cigarette filter, as shown in (a), (b), (c) of Fig. 4, the organic matter decomposition catalyst 11 is interposed between the front-end filter 410 and the rear-end filter 420. A cigarette filter can be configured in the form. The front-end filter 410 or the rear-end filter 420 is any one of a filter made of cellulose 12, a filter in which cellulose 12 and an organic material decomposition catalyst 11 are mixed, and a carbon body may be selectively included.

The front-end filter 410 and the rear-end filter 420 are spaced apart, and a plurality of organic material decomposition catalysts 11 are filled in the space between the front-end filter 410 and the after-stage filter 420 . 0.01 to 5 g of organic material decomposition catalyst 11 powder may be filled in the space between the front-end filter 410 and the rear-end filter 420 . The space between the front-end filter 410 and the rear-end filter 420 is isolated from the outside by a cylindrical case or the like in order to prevent the outflow of the organic material decomposition catalyst 11 powder.

Above, a cigarette filter for reducing toxic gas substances according to an embodiment of the present invention has been described. Hereinafter, a method for preparing an organic material decomposition catalyst will be described.

First, as shown in FIG. 5, an adsorbent and a decomposition accelerator are prepared, respectively (S501).

The adsorbent may use any one of a metal oxide-based adsorbent and a mineral-based adsorbent, or a combination thereof. The metal oxide-based adsorbent includes cesium oxide (CeO ₂ ), vanadium oxide (V ₂ O ₅ ), zinc oxide (ZnO), titanium oxide (TiO ₂ ), nickel oxide (NiO), cobalt oxide (CoO), copper oxide ( CuO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ) Any one or a combination thereof is available, and the mineral adsorbent includes basalt, granite, sandstone, limestone, shale, metamorphic rock, attapulgite (attapulgite), montmorillonite (montmorillonite), bentonite (bentonite), kaolinite (kaolinite), any one or a combination of zeolite (zeolite) is available.

The decomposition accelerator is any one of the metal salt containing the nitrate ion, the metal salt containing the phosphate ion, the metal salt containing the sulfate ion, the metal salt containing the chloride ion, the metal salt containing the fluoride ion, the metal salt containing the carbonate ion, or Combinations of these may be used.

The metal salt containing the nitrate ion is any one of calcium nitrate (Ca(NO ₃ ) ₂ ), zinc nitrate (Zn(NO ₃ ) ₂ ), iron nitrate Ⅲ (Fe(NO ₃ ) ₃ ) or a combination thereof, Metal salts containing phosphate ions are aluminum phosphate (AlPO4), iron phosphate III (FePO ₄ ), copper phosphate (Cu ₃ (PO ₄ ) ₂ ), zinc phosphate (Zn ₃ (PO ₄ ) ₄ ), magnesium phosphate (Mg ₃ ) (PO ₄ ) ₂ ) of any one or a combination thereof, and the metal salt containing sulfate ions is sodium sulfate (Na ₂ SO ₄ ), potassium sulfate (K ₂ SO ₄ ), calcium sulfate (CaSO ₄ ), manganese sulfate (MnSO) ₄ ), nickel sulfate (NiSO ₄ ), copper sulfate (CuSO ₄ ), cobalt sulfate (CoSO ₄ ), magnesium sulfate (MgSO ₄ ), iron sulfate II (FeSO ₄ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ) Any one or a combination thereof, the metal salt containing chloride ions is aluminum chloride (AlCl ₃ ), titanium chloride (TiCl ₄ ), calcium chloride (CaCl ₂ ) any one or a combination thereof, and the metal salt containing fluoride ions is Calcium fluoride (CaF ₂ ), barium fluoride (BaF ₂ ) Any one or a combination thereof, the metal salt containing carbonate ions may correspond to calcium carbonate (CaCO ₃ ).

Next, a combustible material is prepared, and the combustible material is mixed with an adsorbent and a decomposition accelerator (S502). Then, the mixture of the adsorbent, the decomposition accelerator and the combustible material is mixed with water to form a dough (S503).

The combustible material is preferably in the form of a powder, which reacts with oxygen at high temperature to completely decompose into water and carbon dioxide, etc. Powdered hydrocarbons made of carbon, hydrogen and oxygen, such as adipic acid, melanin, sugar, stearic acid, paraffin, etc. compound; It may be a mixture containing one or more selected from the group of powdery carbon compounds such as carbon black, pulverized coal, graphite powder, and the like.

In addition, the combustible material may be mixed in a ratio of 1 to 50% of the total weight of the adsorbent and the decomposition accelerator, and water may be mixed in a proportion of 50 to 300% of the total weight of the adsorbent and the decomposition accelerator.

Finally, when a dough in which an adsorbent, a decomposition accelerator and a combustible material are mixed in water is calcined at a temperature of 800 to 1200° C., an organic material decomposition catalyst comprising an adsorbent and a decomposition accelerator is prepared (S504). Thereafter, the organic material decomposition catalyst may be pulverized to a predetermined particle size (S505). In one embodiment, the organic material decomposition catalyst may be pulverized to an average particle diameter of about 0.1 mm.

Above, a cigarette filter for reducing toxic gas substances according to an embodiment of the present invention has been described. Hereinafter, the present invention will be described in more detail through experimental examples.

<Experimental Example 1: Decomposition characteristics of the organic material decomposition catalyst according to the type of adsorbent>

To 70 g of adsorbent, calcium nitrate (Ca(NO ₃ ) ₂ ) 2 g, zinc phosphate (Zn ₃ (PO ₄ ) ₄ ) 2 g, sodium sulfate (Na ₂ SO ₄ ) 2 g, manganese sulfate (MnSO ₄ ) 2 g, cobalt sulfate (CoSO ₄ ) ) 2g, aluminum sulfate (Al ₂ (SO ₄ ) ₃ ) 2g, titanium chloride (TiCl ₄ ) 2g, calcium carbonate (CaCO ₃ ) 2g, and 30 g of stearic acid powder with an average particle diameter of 20 μm, which is a combustible material, are mixed to form an adsorbent and decomposition accelerator. and a mixture of combustible materials was prepared. In order to examine the decomposition characteristics of the organic material decomposition catalyst according to the type of adsorbent, as shown in Table 1 below, porous alumina (Al ₂ O ₃ ); basalt; sandstone; zeolite; a combination of zinc oxide (30 wt %)/cobalt oxide (20 wt %)/silica (50 wt %); A combination of porous alumina (50 wt %)/porous silica (50 wt %) was applied as an adsorbent, respectively.

A mixture of adsorbent, decomposition accelerator and combustible material was mixed with distilled water of the same weight and kneaded, then molded into a cylindrical shape with a diameter of 3 cm and a length of 10 cm, and then dried at room temperature for 72 hours. After calcining the dried molded product at 800° C. for 10 hours in an electric oven, it was cooled to room temperature to prepare an organic material decomposition catalyst.

After the prepared organic material decomposition catalyst was pulverized to have an average particle diameter of 0.1 mm, 5 g of the pulverized organic material decomposition catalyst was charged into the catalyst tower 8 of the organic gaseous compound decomposition experimental apparatus as shown in FIG. Then, 1000 ppm of formaldehyde (HCHO) was injected through the septum in a sealed state of the experimental device, and left at room temperature (30°C) and 60°C for 24 hours, and the decomposition rate of formaldehyde inside the experimental device was measured by GC /MS (Agilent Technologies 5973 I) (10). The measured decomposition rates of formaldehyde are shown in Table 1. In the experimental apparatus of Figure 6, reference numeral 1 is an air cylinder for injecting air into the organic sample bubbler 3, reference numeral 2 is a flow rate controller, reference numeral 3 is an organic sample in the catalyst tower 8, that is, It is an organic sample bubbler that supplies formaldehyde, reference number 4 is a constant temperature bath, reference number 5 is a temperature controller, reference number 6 is a temperature control area, reference number 7 is a 3-way valve, reference number 9 is a heating device, Code 10 is a gas chromatography device for measuring the decomposition rate of formaldehyde.

<Decomposition characteristics of organic material decomposition catalyst according to the type of adsorbent> Adsorbent type Formaldehyde decomposition rate (vol%) room temperature 60℃ Porous Alumina 23 56 basalt 13 27 sandstone 14 29 zeolite 16 35 Zinc Oxide (30)/Cobalt Oxide (20)/Silica (50) 21 51 Alumina (50) / Silica (50) 18 46

Referring to Table 1, it can be seen that the organic material decomposition catalyst to which the metal oxide-based adsorbent is applied as the adsorbent exhibits excellent decomposition efficiency of toxic gaseous substances compared to the organic material decomposition catalyst using the mineral-based adsorbent. When porous alumina was applied, it showed the best decomposition rate of toxic gas substances of 56%, and the combination of zinc oxide (30wt%)/cobalt oxide (20wt%)/silica (50wt%) and porous alumina (50wt%)/porous silica ( When the adsorbent was applied to the combination of 50 wt%), excellent decomposition rates of 51% and 46% were respectively exhibited. On the other hand, when the mineral adsorbent was applied, the decomposition rate was higher than a certain level of 27% or more, but compared to the case where the metal oxide adsorbent was applied, the decomposition rate was relatively low.

<Experimental Example 2: Decomposition characteristics of organic material decomposition catalyst according to the type of decomposition accelerator>

20 g of porous alumina, 20 g of basalt, 20 g of bentonite, and 20 g of titanium oxide mixed with 80 g of sodium sulfate (Na ₂ SO ₄ ) 5 g of sodium sulfate (Na 2 SO 4 ) and 15 g of the decomposition accelerator listed in Table 2 below were mixed, respectively, and pulverized coal powder having an average particle size of 0.2 μm 60 g was further mixed with a combustible material. The mixture of adsorbent, decomposition accelerator, and combustible material was mixed with distilled water 1.5 times the weight of the mixture, kneaded, and molded into a cylindrical shape with a diameter of 3 cm and a length of 10 cm, and then dried at room temperature for 72 hours. The dried molded product was calcined at 1,000° C. in an electric furnace for 12 hours and then cooled to room temperature to prepare an organic material decomposition catalyst.

After the prepared organic material decomposition catalyst was pulverized to have an average particle diameter of 0.1 mm, 5 g of the pulverized organic material decomposition catalyst was charged into the catalyst tower 8 of the organic gaseous compound decomposition experimental apparatus as shown in FIG. Then, 1000 ppm of acetaldehyde (CH ₃ COH) was injected through the septum in a sealed state of the experimental device, and after leaving it at room temperature (30° C.) and 60° C. for 24 hours, the decomposition rate of acetaldehyde inside the experimental device was measured using GC/MS (Agilent Technologies 5973 I) (10). The measured decomposition rates of acetaldehyde are as shown in Table 2.

<Decomposition characteristics of organic material decomposition catalyst according to the type of decomposition accelerator> decomposition accelerator Acetaldehyde decomposition rate (vol%) room temperature 60 ℃ Calcium nitrate (Ca(NO ₃ ) ₂ ) 12 25 Zinc nitrate (Zn(NO ₃ ) ₂ ) 18 42 Iron phosphate III (FePO ₄ ) 12 24 Copper Phosphate (Cu ₃ (PO ₄ ) ₂ ) 15 33 Magnesium Phosphate (Mg ₃ (PO ₄ ) ₂ ) 14 30 Manganese sulfate (MnSO ₄ ) 16 37 Nickel sulfate (NiSO ₄ ) 22 48 Cobalt sulfate (CoSO ₄ ) 17 39 Magnesium sulfate (MgSO ₄ ) 13 26 Titanium chloride (TiCl ₄ ) 16 35 Barium Fluoride (BaF ₂ ) 14 29 Calcium carbonate (CaCO ₃ ) 15 34

Referring to Table 2, it was confirmed that acetaldehyde decomposition rate of 24% or more can be obtained regardless of the type of decomposition accelerator, nickel sulfate (decomposition rate 48%), zinc nitrate (42%), manganese sulfate (37%), sulfuric acid It can be seen that the decomposition rate of acetaldehyde is excellent in the order of cobalt (39%), titanium chloride (35%), calcium carbonate (34%), copper phosphate (33%), and magnesium phosphate (30%).

11: organic matter decomposition catalyst 12: cellulose
310: first filter 320: second filter
410: front filter 420: downstream filter

Claims (12)

It contains cellulose and organic matter decomposition catalyst,
The organic decomposition catalyst is composed of an adsorbent that adsorbs a toxic gas substance, and a decomposition accelerator that decomposes the toxic gas substance and induces resynthesis into a low toxic gas substance,
The adsorbent is any one of a metal oxide-based adsorbent, a mineral-based adsorbent, or a combination thereof,
The decomposition accelerator,
combination of sodium sulfate (Na ₂ SO ₄ ) and nickel sulfate (NiSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and zinc nitrate (Zn(NO ₃ ) ₂ );
combination of sodium sulfate (Na ₂ SO ₄ ) and manganese sulfate (MnSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and cobalt sulfate (CoSO ₄ );
Combination of sodium sulfate (Na ₂ SO ₄ ) and titanium chloride (TiCl ₄ )
Tobacco filter for reducing toxic gas substances, characterized in that any one.
It consists of a first filter and a second filter,
The first filter is a filter made of cellulose, and the second filter is a filter in which cellulose and an organic decomposition catalyst are mixed,
The organic decomposition catalyst is composed of an adsorbent that adsorbs a toxic gas substance, and a decomposition accelerator that decomposes the toxic gas substance and induces resynthesis into a low toxic gas substance,
The adsorbent is any one of a metal oxide-based adsorbent, a mineral-based adsorbent, or a combination thereof,
The decomposition accelerator,
combination of sodium sulfate (Na ₂ SO ₄ ) and nickel sulfate (NiSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and zinc nitrate (Zn(NO ₃ ) ₂ );
combination of sodium sulfate (Na ₂ SO ₄ ) and manganese sulfate (MnSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and cobalt sulfate (CoSO ₄ );
Combination of sodium sulfate (Na ₂ SO ₄ ) and titanium chloride (TiCl ₄ )
Tobacco filter for reducing toxic gas substances, characterized in that any one.
shear filter;
post filter; and
It consists of including; an organic material decomposition catalyst interposed between the front-end filter and the rear-end filter,
The front-end filter or the rear-end filter is any one of a filter made of cellulose, a filter in which cellulose and an organic material decomposition catalyst are mixed,
The organic decomposition catalyst is composed of an adsorbent that adsorbs a toxic gas substance, and a decomposition accelerator that decomposes the toxic gas substance and induces resynthesis into a low toxic gas substance,
The adsorbent is any one of a metal oxide-based adsorbent, a mineral-based adsorbent, or a combination thereof,
The decomposition accelerator,
combination of sodium sulfate (Na ₂ SO ₄ ) and nickel sulfate (NiSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and zinc nitrate (Zn(NO ₃ ) ₂ );
combination of sodium sulfate (Na ₂ SO ₄ ) and manganese sulfate (MnSO ₄ );
combination of sodium sulfate (Na ₂ SO ₄ ) and cobalt sulfate (CoSO ₄ );
Combination of sodium sulfate (Na ₂ SO ₄ ) and titanium chloride (TiCl ₄ )
Tobacco filter for reducing toxic gas substances, characterized in that any one.
delete delete delete The method according to any one of claims 1 to 3, wherein the metal oxide-based adsorbent is cesium oxide (CeO ₂ ), vanadium oxide (V ₂ O ₅ ), zinc oxide (ZnO), titanium oxide (TiO ₂ ), nickel oxide (NiO), cobalt oxide (CoO), copper oxide (CuO), aluminum oxide (Al ₂ O ₃ ), silicon oxide (SiO ₂ ) Any one or a combination thereof,
The mineral adsorbent is any one or a combination of basalt, granite, sandstone, limestone, shale, metamorphic rock, attapulgite, montmorillonite, bentonite, kaolinite, and zeolite Tobacco filter for reducing toxic gas substances, characterized in that.
[Claim 4] The cigarette filter according to any one of claims 1 to 3, wherein the adsorbent contains 10 to 95% of the total weight of the organic material decomposition catalyst.
[4] The cigarette filter according to any one of claims 1 to 3, wherein the decomposition accelerator comprises 5 to 90% of the total weight of the organic material decomposition catalyst.
[Claim 4] The toxic gas substance according to any one of claims 1 to 3, wherein in the filter comprising cellulose and the organic material decomposition catalyst, the organic material decomposition catalyst is mixed in a ratio of 5 to 30% based on the weight of the cellulose. Tobacco filter to reduce.
The method according to any one of claims 1 to 3, wherein the filter made of cellulose or a filter made of cellulose and an organic material decomposition catalyst contains a carbon body,
Tobacco filter for reducing toxic gas substances, characterized in that the carbon body is any one of activated carbon powder, charcoal powder, or a combination thereof.
The cigarette filter for reducing toxic gas substances according to claim 11, wherein the carbon body is mixed by up to 50% of the weight of the cellulose.

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