JP2002200150A - Deodorant and deodorizing filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorant wherein the adsorption and the resolution for odor components are remarkably increased. SOLUTION: A spreading layer 12, on which a chemical spreader comprising aniline to perform the adsorption of odor components is spread, is formed on a porous carrier 11 comprising an activated charcoal. Then, a catalyst 13 comprising Ru which accelerates the decomposition of the odor components is carried on the spreading layer 12 in the pores of the porous carrier 11 for the constitution. The spreading amount of aniline is set to be 2 to 10 wt.% to the porous carrier 11. The catalyst 13 is set to be 3 to 7 wt.% to the porous carrier 11. Thus, the adsorption and the resolution for the odor components can be increased remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant and a deodorizing filter, and more particularly to a deodorizing agent and a deodorizing filter for removing an odor in a living space such as a house, an office or a car.

[0002]

2. Description of the Related Art In living spaces such as homes, offices and automobile interiors, various materials such as building materials, foodstuffs, and tobaccos generate odors, and their removal is required. Conventionally, activated carbon has been mainly used for deodorization.
This activated carbon has the ability to adsorb and remove a wide range of odor components and has the advantage of being inexpensive. Such activated carbon is suitable for deodorizing in a living space having an odor concentration of about several ppm or less.

However, activated carbon is known to have an extremely low adsorption capacity when a certain amount of odor component is adsorbed (saturated adsorption) on the pores in the activated carbon due to its deodorizing mechanism (physical adsorption). ing. In addition, since the adsorptive power in the pores in the activated carbon particles is almost determined by the boiling point peculiar to the odor component, there is a problem that the adsorbed odor component is re-emitted with a rise in temperature or a wind current. .

[0004] As measures against the decrease in the adsorbing ability of activated carbon, as disclosed in Japanese Patent Application Laid-Open No. Hei 10-235154, a paper-shaped deodorizing filter by mixing an adsorbent containing activated carbon and a photocatalyst, As disclosed in JP-A-7-155366 as schematically shown in FIGS. 8 and 9, there is known a technique of a deodorant in which activated carbon 1 contains ruthenium (Ru) compound (ruthenium catalyst) 2. ing.
FIG. 9 shows that activated carbon 1 adsorbs odor component 3 and activated carbon 1
5 shows a state in which the odor component 3 is approaching the ruthenium catalyst 2 contained in the pores. The technology of the deodorizing filter and the deodorizing agent makes it possible to regenerate the activated carbon by decomposing the odor component adsorbed on the activated carbon with a catalyst, thereby extending the life of the deodorizing performance of the activated carbon.

[0005] In order to solve the problem that the odor component is re-released, it is necessary to increase the adsorption power of the odor component. JP 6
In the deodorant disclosed in JP-A-304233, FIG.
As shown in (1), the surface of the activated carbon 1 is subjected to a chemical impregnation treatment with, for example, aniline to form an impregnated layer 4, which has a strong adsorbing power to a specific odor component. FIG. 11 shows a state in which the odor component 3 is adsorbed on the attachment layer 4. By increasing the ability to adsorb the odorous component 3 like the activated carbon 1, re-release of the odorous component 3 is suppressed and the deodorizing immediate effect is enhanced.

[0006]

However, as in the above-mentioned conventional example, the basic characteristics (adsorption ability) of a deodorant obtained by combining an activated carbon and a catalyst (such as a photocatalyst or a ruthenium compound) depend on the activated carbon. Therefore, the problem of re-release of the odor component has not been solved. In addition, in the impregnated carbon obtained by subjecting activated carbon to a chemical impregnation treatment, if an odor component is adsorbed to a certain amount in an impregnated layer formed on the surface of the activated carbon and becomes saturated, the adsorption ability is reduced similarly to activated carbon. Met.

Hitherto, it has been desired to improve the resolution and adsorptivity of the odor component. However, even if the chemical adsorbent and the catalyst are supported on activated carbon, the odor component is strongly linked to the chemical adsorbent.
It has been considered that the odor component does not come into contact with the catalyst, and the effectiveness of supporting the catalyst cannot be obtained. For this reason, there has been no deodorant in which both the catalyst and the chemical additive are supported on activated carbon.

Accordingly, an object of the present invention is to provide a deodorizing agent and a deodorizing filter having both high adsorption capacity for odor components and high resolution.

[0009]

Means for Solving the Problems In order to solve the above problems, a first feature of the present invention is a deodorizing agent, in which a porous carrier is provided with a chemical adhering agent for adsorbing odor components. In addition, a catalyst for promoting the decomposition of the odor component is supported.

The porous carrier is preferably selected from activated carbon, zeolite, silica gel, γ-alumina, montmorillonite, activated clay, ion exchange resin, bone charcoal and charcoal.

It is preferable to use an amino acid-containing organic compound and / or a carboxyl group-containing organic compound as the chemical impregnating agent. Examples of the amino acid-containing organic compound include amino group-containing organic silicon compounds such as γ-glycidoxylpropyltriethoxysilane and γ-aminopropyltriethoxysilane, and aromatic amines such as dimethyltrimethyl-silylamine. be able to. Examples of the carboxyl group-containing organic compound include salicylic acid and carboxylic acid.

Further, as the catalyst, Ru, Pt, P
at least one member selected from the group consisting of d, Rh, Ir, Os, and Au.
It is preferable to use at least one kind of element as a main component. If necessary, Al, Ce, La, Pr, Zr, Ba, K, C
It is also effective to contain at least one or more elements from the group consisting of s, Fe, Ni, Mn, Zn, and Cu.
Such a catalyst is preferably supported at a ratio of 0.1 to 10% by weight based on the porous carrier.

It is preferable that a co-oxidizing agent is carried in addition to the above-mentioned structure. It is preferable that at least one cooxidant is selected from the group consisting of ferric chloride, cobaltous chloride, tertiary indium chloride, sodium chlorate, sodium bromate and sodium iodate. Then, the co-oxidizing agent is added in an amount of 0.1 to 1 mol of the catalyst.
It is preferable that the carrier is supported on the porous carrier at a ratio of about 0.2 mol.

Further, a heat storage agent is preferably added to the porous carrier. This heat storage agent is composed of Ag, C
It is preferable that at least one element is selected from the group consisting of u, Pd, Al, and Mg. In addition, the heat storage agent is preferably added at a ratio of 0.1 to 10% by weight based on the porous carrier.

According to the deodorizing agent according to the first aspect of the present invention, in addition to the adsorbing ability of the porous carrier itself for adsorbing odor components, the adsorbing ability can be increased by the adsorbing action of the chemical impregnating agent. . Further, the odor component can be decomposed by the action of the catalyst supported on the porous carrier. For this reason, it is provided with a function of preventing the odor component adsorbed due to the temperature rise or the flow of air from being re-released from the porous carrier. In addition, by the catalytic action, the odor component adsorbed on the porous carrier is decomposed, so that the adsorptive capacity of the porous carrier can be regenerated and the life of the deodorizing performance of the porous carrier can be extended. In particular, in the present invention, the weight ratio (% by weight) of the catalyst to the porous carrier is defined as 0.1 to 10% by weight, preferably 3 to 7% by weight, and the weight ratio of the chemical additive is set to 0.5 to By regulating the content to 30% by weight, preferably 2 to 10% by weight, it is possible for the first time to achieve both the resolution of the catalyst and the ability to adsorb the chemical additive.

Further, according to the deodorizer according to the first aspect of the present invention, ferric chloride, cobaltous chloride, tertiary indium chloride, sodium chlorate, sodium bromate and iodic acid are used for the catalyst. By supporting at least one co-oxidizing agent selected from the group consisting of sodium at an appropriate molar ratio, the co-oxidizing agent has an effect of further improving the oxidizing ability of the catalyst. Further, Ag, Cu, P
By adding a heat storage agent composed of at least one element from the group consisting of d, Al, and Mg at an appropriate weight ratio, the heat absorption characteristics, storage characteristics, and re-radiation characteristics of the deodorant can be adjusted. Since the oxidizing ability of the supported catalyst is increased, the odor component can be efficiently decomposed.

A second feature of the present invention resides in that the deodorant according to the first feature is added to the filter body. The filter body is preferably made of a paper-like material, and a deodorant is preferably mixed in the paper-like material. Further, the structure of the filter body is preferably formed in a honeycomb structure or a laminated structure in the shape of a corrugated cardboard.

According to the deodorizing filter according to the second aspect of the present invention, the deodorizing agent can be uniformly held in the filter body by incorporating the deodorizing agent into the paper-like material. Further, by using the paper-like material, the odor component is easily brought into contact with the deodorant, and the deodorizing efficiency can be improved. Such a filter body can have a large area in contact with air containing an odor component by having a honeycomb structure or a cardboard laminated structure. That is, since the specific surface area of the deodorizing filter can be increased, the deodorizing performance of the entire deodorizing filter can be enhanced in addition to the deodorizing performance of the deodorizing agent itself.

[0019]

As is apparent from the above description, according to the present invention, a deodorant and a deodorant having remarkably enhanced adsorption ability and resolution of odorous components which cannot be obtained by simply combining a catalyst and a chemical adsorbent. This has the effect of realizing a filter.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a deodorizing agent and a deodorizing filter according to an embodiment of the present invention will be described with reference to the drawings.

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described.
The configuration of the deodorant according to the embodiment will be described. FIG. 1 is an explanatory cross-sectional view schematically showing a deodorant 10 according to this embodiment. The deodorant 10 is used for the porous carrier 1
1, an adhering layer 12 formed by adhering a chemical adsorbent for adsorbing an odor component is formed, and a catalyst 13 for promoting the decomposition of the odor component is provided on the adhering layer 12 in the pores of the porous carrier 11. It is configured to be carried.

(Porous Carrier) The porous carrier 11 is made of a material having physical adsorption such as activated carbon, zeolite, silica gel, γ-alumina, montmorillonite, activated clay, ion exchange resin, bone charcoal, charcoal and the like. In particular, it is preferable to use activated carbon as a porous carrier having an odor adsorbing property from the viewpoint of properties such as specific surface area, high adsorbing ability, hydrophobicity of the surface, and cost. Among activated carbons, coconut shell activated carbon is particularly preferable because it has a high specific surface area of 800 to 1500 mm 2 / g and is excellent in odor adsorption. Also, its mesh (grain size)
Can be suitably used in a range of about 4 to 100 mesh.

(Chemical Attachment Agent) The chemical attachment agent is preferably an organic compound containing an amino acid and / or an organic compound containing a carboxyl group. This chemical additive is
It is preferable that the porous carrier 11 is impregnated at a ratio of 0.5 to 30% by weight. Examples of the amino acid-containing organic compound include amino group-containing organic silicon compounds such as γ-glycidoxylpropyltriethoxysilane and γ-aminopropyltriethoxysilane, aniline, and aromatic amines such as dimethyltrimethyl-silylamine. Can be mentioned. Examples of the carboxyl group-containing organic compound include salicylic acid and carboxylic acid. In this embodiment, the attachment layer 12 is formed of aniline C6H5NH2. In addition, in the chemical impregnation treatment of aniline, an impregnating solution containing aniline is prepared, and activated carbon 11 is immersed and stirred in the impregnating solution for a predetermined time so that a predetermined weight percent of What is necessary is just to carry out chemical impregnation in the ratio. In addition, the amount of this chemical impregnating agent is
It is set at 0.5 to 30% by weight, preferably 2 to 10% by weight. If this amount is less than 0.5% by weight,
This is because a desired attachment effect may not be obtained, and if it is more than 30% by weight, the original adsorption ability of the porous carrier 11 is impaired.

(Catalyst) The catalyst 13 is composed of ruthenium (R
u), platinum (Pt), palladium (Pd), rhodium (Rh), iridium (Ir), osmium (Os),
A main catalyst comprising at least one or more elements from the group consisting of gold (Au), and, if necessary, aluminum (Al);
Cerium (Ce), lanthanum (La), praseodymium (Pr), zirconium (Zr), barium (Ba),
Contains a sub-catalyst consisting of at least one element from the group consisting of potassium (K), cesium (Cs), iron (Fe), nickel (Ni), manganese (Mn), zinc (Zn), and copper (Cu) Can be made. Porous carrier 11
For example, in the case of a Ru catalyst, as a starting material, an oxide of ruthenium element (ruthenium oxide, ruthenium hydroxide, etc.), chloride (ruthenium chloride, ruthenium chloride hydrate, etc.) (Ruthenium bromide, ruthenium sulfide, etc.), and if necessary, neutralized, washed, impregnated, dried, and calcined to be supported on the porous carrier 11.

The amount of the catalyst 13 carried is determined by the amount of the porous carrier 1
0.1 to 10% by weight, preferably 3 to 7% by weight, of 1 is supported. If the amount is less than 0.1% by weight, the desired odor component decomposition activity may not be obtained. If the amount is more than 10% by weight, the activity may decrease due to secondary agglomeration of the catalyst. Decomposition effect corresponding to high cannot be expected.

(Co-Oxidizing Agent) The porous carrier 11 preferably carries a co-oxidizing agent. This co-oxidizing agent is in a ratio of 0.1 to 0.2 mol per 1 mol of the catalyst 13,
It is preferable to be carried on the porous carrier 11. This co-oxidant includes ferric chloride, cobaltous chloride, tertiary indium chloride, sodium chlorate, sodium bromate,
At least one kind can be selected from the group consisting of sodium iodate. By using a co-oxidant in this way, the catalytic activity can be further enhanced.

(Heat Storage Agent) It is preferable that a heat storage agent is added to the porous carrier 11. As this heat storage agent,
Metals or metal ions such as silver (Ag), copper (Cu), palladium (Pd), aluminum (Al), and magnesium (Mg) can be used. The heat storage agent is used in an amount of 0.1 to 10% by weight, preferably 3 to 10% by weight, based on the porous carrier 11.
It is added by a known method at a ratio of 7% by weight.
If the amount is less than 0.1% by weight, desired characteristics (absorption characteristics, accumulation characteristics, re-emission characteristics) may not be obtained. If the amount is more than 10% by weight, an effect corresponding to high cost may be obtained. Can't expect.

In the deodorizing agent 10 having the above-described structure, in addition to the adsorbing ability of the porous carrier 11 itself that adsorbs odorous components, the adsorbing action of the adhering layer 12 can increase the adsorbing ability. The odor component can be decomposed by the action of the catalyst 13. For this reason, it has a function of preventing the odor component adsorbed due to the temperature rise or the flow of air from being re-released from the porous carrier 11. in addition,
By the catalytic action, the odor component adsorbed on the porous carrier 11 is decomposed, so that the adsorption ability of the porous carrier can be regenerated and the life of the deodorizing performance of the porous carrier can be extended. FIG. 2 shows a state in which an odor component 14 is adsorbed on a deodorant 10 in which an attachment layer 12 made of aniline is formed on a porous carrier 11 made of activated carbon and a catalyst 13 made of Ru is supported. As shown in FIG. 2, the odor component 14 adsorbed on the porous carrier 11 moves and comes into contact with the catalyst 13, and the odor component 14 adsorbed on the adhering layer 12 comes into contact with the catalyst 13. Is decomposed. For this reason, the deodorizing immediate effect is improved, and the life of the deodorant can be extended.
In particular, in the present invention, the weight ratio (% by weight) of the catalyst to the porous carrier is 0.1 to 10% by weight, preferably 3 to 7%.
% By weight, and the weight ratio of the chemical additive is 0.5 to 30%.
By limiting the amount to 2% by weight, preferably 2 to 10% by weight, it is possible to exhibit both the resolution of the catalyst and the ability to adsorb the chemical adsorbent for the first time.

(Second Embodiment) FIG. 3 shows a deodorizing filter 20 according to a second embodiment of the present invention.
In this deodorizing filter 20, the deodorizing agent 10 according to the first embodiment is added to a filter main body 21. The filter body 21 is made of a paper-like material, and the deodorant 10 is mixed in the fine structure of the paper-like material. The paper-like material is preferably a fiber made of an inorganic material or an organic material, and formed into a paper by incorporating a deodorant 10 into the fiber. Then, such a paper-like material is formed into a honeycomb structure as shown in FIG.
The specific surface area of 0 is set large. The odor components in the air passing through the voids of the honeycomb structure come into contact with the deodorant 10 and are efficiently adsorbed and decomposed.

In order to carry the deodorant 10 on the filter body 21 having the honeycomb structure, the deodorant 10 is supported on the paper-like material via a binder, in addition to the method of forming the deodorant 10 on the paper-like material. Of course, you can. Further, paper, aluminum, stainless steel, or the like may be added as a base material to the filter body 21 mainly composed of a paper-like material. By providing such a substrate, it is possible to prevent extreme deformation or damage due to the weight, vibration, or the like of the filter main body 21. The dimensions of the honeycomb structure are such that the cell size is 1 unit.
When the diameter is smaller than 1 mm, it is difficult to manufacture the honeycomb structure. In addition, when it is larger than 10 mm, the odor component is the deodorant 1
Because the rate of passing through without touching 0 increases,
Not preferred. In addition, the binder can use a known adhesive, a binder, a molding aid, or the like according to the filter shape, and does not significantly reduce the performance of the deodorant 10 or
Those not decomposed by the catalyst 13 are preferable.

FIG. 4 shows a modification of the deodorizing filter according to the present embodiment. This deodorizing filter 20A has a structure in which a paper-like material having the same deodorizing agent 10 carried thereon as in the present embodiment is laminated in a cardboard shape. With such a structure, the specific surface area can be increased, and the adsorption performance and decomposition performance of the odor component can be enhanced. Note that, also in this modified example, the cardboard-shaped cell size is set to the same size as in the present embodiment.

Hereinafter, the present invention will be described more specifically with reference to Examples. Note that this embodiment is an example of the configuration of the present invention, and the present invention is not limited to this.

(Example) Activated carbon as a porous carrier
Aniline is chemically impregnated at a ratio of 4% by weight,
What carried a Ru catalyst at a ratio of 5% by weight was used as a deodorant. The deodorizer was carried on a paper honeycomb (cell size: 3 mm) using a binder to obtain a deodorizing filter (filter 1). In the comparative example, a commercially available impregnated carbon filter (filter 2) was used.

The filter 1 and the filter 2 were used to evaluate the deodorization of tobacco smoke. As a result, as shown in the graph of FIG. 5, the filter 1 of this embodiment has a very high deodorizing immediate effect. It turns out. In this deodorization evaluation test using tobacco smoke, a filter was arranged in 125 liters of smoke generated from 1/4 of the tobacco, and the change in the tobacco odor intensity was observed over time.

As a result of the life evaluation using acetaldehyde, it was found that the life was remarkably extended due to the decomposition effect of the Ru catalyst in the filter 1 as shown in the graph of FIG. In this evaluation test, after acetaldehyde was supplied at a concentration of 100 ppm and 0.4 liter / min for 10 minutes, standing for 24 hours was regarded as one cycle, and how many cycles of deodorizing effect were observed.

Furthermore, the amount of decomposition products (carbon dioxide) generated during the deodorization of acetaldehyde was measured using only the filter 1. As a result, an increase in the amount of carbon dioxide generated over time was observed. It turned out to have a remarkable effect.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view schematically illustrating a deodorant according to a first embodiment of the present invention.

FIG. 2 is an explanatory cross-sectional view schematically showing a deodorant according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a deodorizing filter according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a modification of the deodorizing filter according to the second embodiment.

FIG. 5 is a graph showing evaluation results of tobacco deodorization in Examples.

FIG. 6 is a graph showing the life performance evaluation results of Examples.

FIG. 7 is a graph showing the amount of carbon dioxide generated when acetaldehyde is deodorized in Examples.

FIG. 8 is an explanatory sectional view schematically showing a conventional deodorant.

FIG. 9 is an explanatory sectional view schematically showing a conventional deodorant.

FIG. 10 is an explanatory cross-sectional view schematically showing another conventional deodorant.

FIG. 11 is an explanatory cross-sectional view schematically showing another conventional deodorant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Deodorant 11 Porous carrier 12 Adhesion layer 13 Catalyst 14 Odor component 20, 20A Deodorizing filter 21, 21A Filter main body

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 53/86 B01J 20/22 A B01J 20/22 31/28 A 31/28 32/00 ZAB 32/00 ZAB 35/04 A 35/04 B01D 53/36 HF term (reference) 4C080 AA05 AA07 BB02 CC01 HH09 JJ03 KK08 LL03 LL10 MM07 MM14 MM18 NN01 NN03 NN04 NN05 NN06 NN22 QQ12 4D019 AA01 BC01 BC01 BC01 BC01 AA22 AB01 AB03 BA11Y BA30Y BA31Y BA32X BA33Y BA34Y CD01 CD05 4G066 AA02D AA04B AA04C AA05B AA05C AA11D AA13D AA15D AA16D AA18D AA20B AA20C AA20D AA23D AA26D AA27D AA28D AA32D AA61B AA61C AA64B AA64C AA80B AA80C AB07B AB13B AD10B AD15B AE10B AE10C AE19B AE19C BA03 BA07 BA16 CA02 CA52 DA03 FA03 FA11 FA28 FA37 GA06 4G069 AA03 BA01A BA02A BA07A BA08A BA08B BA10A BA16A BA23A BC03A BC06A BC13A BC16A BC31A BC35A B C42A BC43A BC44A BC51A BC62A BC66A BC68A BC69A BC70B CA01 CA07 CA10 CA17 DA06 EB01

Claims (17)

[Claims] 1. A deodorizing agent characterized in that a chemical impregnating agent for adsorbing odor components is attached to a porous carrier, and a catalyst for promoting the decomposition of odor components is supported on the porous carrier. 2. The deodorant according to claim 1, wherein the porous carrier is selected from activated carbon, zeolite, silica gel, γ-alumina, montmorillonite, activated clay, ion exchange resin, bone charcoal, and charcoal. 3. The deodorant according to claim 1, wherein the chemical impregnating agent comprises an amino acid-containing organic compound and / or a carboxyl group-containing organic compound. 4. The method according to claim 1, wherein the chemical additive is attached to the porous carrier at a rate of 0.5 to 30% by weight. Deodorant. 5. The catalyst is at least one selected from the group consisting of ruthenium (Ru), platinum (Pt), palladium (Pd), rhodium (Rh), iridium (Ir), osmium (Os), and gold (Au). The deodorizer according to any one of claims 1 to 4, wherein the deodorant is a main catalyst composed of the above elements. 6. The main catalyst includes aluminum (A)
l), cerium (Ce), lanthanum (La), praseodymium (Pr), zirconium (Zr), barium (B
a), potassium (K), cesium (Cs), iron (F
e), nickel (Ni), manganese (Mn), zinc (Z
The deodorizer according to claim 5, further comprising a sub-catalyst comprising at least one element selected from the group consisting of n) and copper (Cu). 7. The catalyst according to claim 1, wherein the catalyst is
The deodorant according to any one of claims 1 to 6, wherein the deodorant is supported at a ratio of 0.1 to 10% by weight. 8. The deodorant according to claim 1, wherein a co-oxidizing agent is carried on the porous carrier. 9. The method according to claim 8, wherein the co-oxidizing agent is supported on the porous carrier at a ratio of 0.1 to 0.2 mol per 1 mol of the catalyst. Deodorant. 10. The co-oxidizing agent includes ferric chloride, cobaltous chloride, tertiary indium chloride, sodium chlorate,
The deodorizer according to claim 8 or 9, wherein at least one or more types are selected from the group consisting of sodium bromate and sodium iodate. 11. The deodorant according to claim 1, wherein a heat storage agent is added to the porous carrier. 12. The heat storage agent may be silver (Ag), copper (C
12. The deodorizer according to claim 11, comprising at least one element selected from the group consisting of u), palladium (Pd), aluminum (Al), and magnesium (Mg). 13. The deodorant according to claim 11, wherein the heat storage agent is added at a ratio of 0.1 to 10% by weight based on the porous carrier. . 14. A deodorizing filter, wherein the deodorizing agent according to claim 1 is added to a filter body. 15. The filter body is made of a paper-like material,
The deodorizing filter according to claim 14, wherein the deodorizing agent is mixed in the paper-like material. 16. The deodorizing filter according to claim 14, wherein the filter main body is formed in a honeycomb structure. 17. The deodorizing filter according to claim 14, wherein the filter body has a laminated structure in a cardboard shape.