JPH08281113A - Deodorant - Google Patents

Abstract

PURPOSE: To provide a deodorant capable of displaying excellent deodorization performance in the actual use environment. CONSTITUTION: This deodorant is constituted by carrying both a first additive consisting of either or both of a transition element or a transition element compound and a second additive consisting of at least one kinds of halogen or halide on an adsorption carrier. The transition element is copper or the like. The transition element compound is a copper compound such as copper nitrate. Halogen is bromine or iodine. The halide is KBr or HI3 I2 O5 or the like. The adsorption carrier is desirably active carbon, a hydrated magnesium silicate based clay mineral, silica gel, zeolite or activated alumina. The first additive is desirably carried at 0.5-30 pts.wt. based on 100 pts.wt. adsorption carrier. The second additive is desirably carried at 0.1-60 pts.wt. based on 100 pts.wt. adsorption carrier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing agent capable of removing odorous components such as trimethylamine, methyl mercaptan, hydrogen sulfide and the like.

[0002]

2. Description of the Related Art Various odorous components such as amine-based nitrogen-containing compounds, hydrogen sulfide, and sulfur-containing compounds such as methyl mercaptan are contained in the gas in the room such as toilets and refrigerators. These odorous components are uncomfortable for humans, and thus it is required to remove them with a deodorant. As the deodorant, conventionally, for example, activated carbon that is porous and has a large specific surface area has been used.

[0003]

[Problems to be Solved] However, all the odorous components cannot be sufficiently deodorized by the above-mentioned activated carbon alone. Therefore, conventionally, by impregnating activated carbon with an adhesive,
It has been proposed to further improve the deodorizing performance (Japanese Patent Laid-Open No. HEI-2)
─180633, Japanese Examined Patent Publication No. 1-24744,
Japanese Patent Publication No. 60-57888, Japanese Patent Publication No. 55-2073
No. 2).

However, all of the above-mentioned impregnated activated carbons are difficult to exert sufficient deodorizing performance. In particular, in an actual use environment in which a low concentration of odorous components is present, the performance cannot be sufficiently exhibited.

In view of the above conventional problems, the present invention aims to provide a deodorant capable of exhibiting excellent deodorizing performance in an actual use environment.

[0006]

According to the present invention, an adsorption carrier is loaded with a first additive containing one or both of a transition element and a transition element compound, and a second additive containing one or more halogens or halogen compounds. It is a deodorant characterized by becoming.

In the present invention, the first additive is either or both of a transition element and a transition element compound.
Examples of the transition element include copper, iron, nickel, cobalt and manganese. Examples of the transition element compound include copper compounds such as copper nitrate, copper sulfate and cupric chloride.

The second additive comprises at least one kind of halogen or halogen compound. The halogen is, for example, fluorine, chlorine, bromine, iodine or astatine, and it is particularly preferable to use bromine (Br) or iodine (I). Examples of the halogen compound include KBr, NaBr, NH ₄ Br, HIO ₃ , and I ₂ O.
_{There are 5} , KI, NaI, and NH ₄ I.

As the second additive, bromine or iodine may be used alone, and particularly when bromine is used, KB is used.
It is preferable to use r, NaBr or the like. When iodine is used, it is preferable to use halogen compounds such as HIO ₃ and I ₂ O ₅ together. The reason is that the halogen compound prevents evaporation of bromine or iodine. It is considered that Br ₂ , I ₂ , the halogen compound, copper, and the copper compound are supported as they are on the adsorbing simple substance.

As the adsorption carrier, activated carbon, hydrous magnesium silicate clay mineral, silica gel, zeolite, or activated alumina can be used. Among these,
It is preferable to use a mixture of activated carbon and hydrous magnesium silicate clay mineral as an adsorption carrier. This is because activated carbon has a high specific surface area as described above, and thus has a large contact area with odorous components and high deodorizing performance.

Activated carbon is mainly methyl mercaptan,
Excellent adsorption and removal performance for sulfur-containing compounds such as hydrogen sulfide. On the other hand, hydrous magnesium silicate clay minerals are porous clay minerals containing magnesium silicate as a main component, and include mountain crust or sepiolite. Since this product has a highly reactive hydroxyl group on its surface, it is particularly excellent in the adsorptive removal performance of amine compounds such as trimethylamine and ammonia.

The first additive is preferably carried in an amount of 0.5 to 30 parts by weight based on 100 parts by weight of the adsorption carrier. If the amount is less than 0.5 parts by weight, the adsorption performance of sulfur-containing compounds such as hydrogen sulfide and methyl mercaptan may deteriorate. On the other hand, if it exceeds 30 parts by weight,
There is a risk that the pores of the adsorption carrier will decrease and the original performance of the adsorption carrier will be impaired.

The second additive is preferably carried in an amount of 0.1 to 60 parts by weight based on 100 parts by weight of the adsorption carrier. If the amount is less than 0.1 part by weight, the ability to decompose the deodorizing component may be reduced. On the other hand, if it exceeds 60 parts by weight, the pores of the adsorption carrier may decrease and the original performance of the adsorption carrier may be impaired.

[0014]

[Operation and effect] In the deodorant of the present invention, the adsorbing carrier contains a first additive containing a transition element or a transition element compound,
And a second additive composed of halogen or a halogen compound. A transition element or a transition element compound has high removal performance for sulfur-containing compounds such as hydrogen sulfide and methyl mercaptan. It is considered that the reason is that the above-mentioned transition element or transition element compound forms sulfides with respect to sulfide-based odor components. When copper or a copper compound is used among the above-mentioned transition elements or transition element compounds, the above-mentioned action and effect are further enhanced.

The halogen element or halogen compound oxidizes and decomposes odor components, particularly amine odor components such as trimethylamine and ammonia, due to its oxidizing power,
Change to a substance that is easily adsorbed by the adsorption carrier.

Therefore, a plurality of reactions such as the above-mentioned sulfide formation reaction and oxidative decomposition reaction act on each other in a complicated manner, and the above-mentioned additive can sufficiently adsorb and remove various kinds of odorous components. Therefore, the deodorizing performance can be effectively exhibited in the actual use environment of the multi-component system.

Further, since the above-mentioned first and second additives are carried on the adsorption carrier, the contact area with the odorous component is expanded, and excellent deodorizing performance can be exhibited. Also,
The adsorption carrier itself also has the ability to adsorb odorous components. Therefore,
The deodorant of the present invention can exhibit excellent deodorizing performance. In particular, the deodorizing performance is high even when the odorous component has a practically low concentration (see Example 4). Therefore, the deodorizing performance can be maximized in the actual use environment.

The above deodorant is extremely useful as a material for removing odorous components generated in various environments such as various industrial fields and living environments.

The present invention can provide a deodorant capable of exhibiting excellent deodorizing performance in an actual use environment.

[0020]

【Example】

Example 1 A deodorant according to an example of the present invention will be described. The deodorant of this example has 100 parts by weight of an adsorption carrier and copper nitrate (Cu).
5 parts by weight of (NO ₃ ) ₂ ), 2.5 parts by weight of bromine (Br ₂ ) and 1 part by weight of potassium bromide (KBr) are supported. The adsorption carrier is a honeycomb molded body composed of 30% by weight of hydrous magnesium silicate clay mineral (sepiolite) and 70% by weight of activated carbon.

In producing the above deodorant, first, 70% by weight of activated carbon and 30% by weight of sepiolite were mixed. Next, 100 parts by weight of the mixture is mixed with 140 parts of water.
1 part by weight and 10 parts by weight of methyl cellulose are added and kneaded sufficiently with a kneader. Next, this kneaded material was formed into a honeycomb shape using a vacuum extruder to obtain an adsorption carrier. Next, this adsorption carrier was dried at room temperature and then dried with hot air. As a result, an adsorption carrier was obtained.

Next, copper nitrate, bromine and potassium bromide were supported on this adsorption carrier by an impregnation method. As a result, the above deodorant was obtained.

Example 2 The deodorant of this example was prepared by adding 100 parts by weight of an adsorption carrier to copper nitrate (C
u (NO ₃ ) ₂ ) 5 parts by weight and iodic acid (HIO ₃ ) 5
And parts by weight. Copper nitrate and iodic acid were supported on the adsorption carrier by the impregnation method. Others are the same as in the first embodiment.

Example 3 The deodorant of this example was prepared by adding 100 parts by weight of an adsorption carrier to copper nitrate (C
5 parts by weight of u (NO ₃ ) ₂ and diiodine pentoxide (I ₂ O)
₅ ) 5 parts by weight. Copper nitrate and diiodine pentoxide were supported on the adsorption carrier by the impregnation method. Others are the same as in the first embodiment.

Example 4 In this example, as shown in FIGS. 1 to 4, the deodorizing performance of the deodorant of Example 1 was evaluated. For the measurement, the deodorant of Example 1 was used as Sample 1. As a comparative example, activated carbon carrying iron and manganese (Example 1
The same mesh and honeycomb of the same size) were used as sample 9. The odorous component removal rates of these samples 1 and 9 were measured using the measuring device 7 shown in FIG.

This measuring device 7 comprises three containers 70 for storing various odor components and a mixer 7 for mixing various odor components.
1, a flow meter 72, and two columns 73 filled with the samples 1 and 9 respectively. The above sample is in column 7
It is placed in 3. Gas flow rate in column (SV)
Is 1.0 × 10 ⁵ hr ⁻¹ and its temperature is 25 ° C.

As the odorous component, a mixed gas containing three kinds of trimethylamine (T), hydrogen sulfide (S), and methyl mercaptan (M) is used, and each container 70 of the mixed gas is added to a mixer 71 as shown in FIG. Connected Air was used as the carrier gas. Column 73
The measurement was performed by gas chromatography on the inlet side A and the outlet side B, respectively.

Each of the odorous components on the inlet side A had a low concentration of 300 ppb. Then, the concentration ratio of the odorous component on the inlet side to the odorous component on the outlet side was obtained. Change rate C _X (%) of concentration (C) after the passage of time with respect to concentration (C ₀ ) at the start of measurement And C _X = {1−
It was obtained from the formula of (C / C ₀ )} × 100, and this was taken as the removal rate (%) of odorous components. The results are shown in FIGS. FIG. 2 shows the removal rate of trimethylamine. FIG.
Indicates the removal rate of hydrogen sulfide. FIG. 4 shows the removal rate of methyl mercaptan.

As can be seen from the figure, the deodorant of Example 1 exhibited high deodorizing performance against any odorous component. Deterioration performance was also less deteriorated over time. From this, the deodorant of Example 1 has an odor component concentration of several hundred ppb.
It can be seen that even in such a very thin case, a particularly high deodorizing effect is exhibited.

Example 5 In this example, the deodorizing performance of the deodorizing agents shown in Examples 1 to 3 was evaluated. For the evaluation, the removal rate of the odorous components of each deodorant was obtained. The honeycomb sample was crushed into particles. The particulate sample was placed on glass wool in the column. Each sample is 1.
Each was filled with 0 cm ³ . Gas flow rate in column (SV)
Is 6.0 × 10 ⁴ hr ⁻¹ and its temperature is 25 ° C. In the measuring device, one container was filled with trimethylamine as an odor component. Using one column, each deodorant was measured separately.

In the measurement of the deodorant of Example 1, air was used as the carrier gas. In the measurement of the deodorizing agents of Examples 2 and 3, nitrogen (N ₂ ) was used as the carrier gas. In both cases, the odorous component concentration on the inlet side A is 100 ppm,
It was set higher than in the case of Example 4. Then, in the same manner as in Example 4, the odorous component concentrations on the inlet side and the outlet side of the column were measured. The ratio of the odorous component concentration on the outlet side B to the odorous component concentration on the inlet side A was determined, and the result is shown in FIG.

As can be seen from the figure, the deodorants of Examples 1 to 3 exhibited high deodorizing performance even when the odor component was as high as 100 ppm.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an evaluation method of deodorizing performance of a deodorant in Example 4.

FIG. 2 is a graph showing the removal rate of trimethylamine in Example 4.

FIG. 3 is a diagram showing a hydrogen sulfide removal rate in Example 4.

FIG. 4 is a graph showing the removal rate of methyl mercaptan in Example 4.

FIG. 5 is a graph showing the removal rate of trimethylamine in Example 5.

[Explanation of symbols]

 1,9. ． ． Sample, 73. ． ． Column, 7. ． ． Measuring device, A. ． ． The inlet side of the column, B. ． ． The outlet side of the column,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsumasa Horii Aichi Prefecture Nagachite Town, Aichi Prefecture, Nagakute Town, No. 41 Yokomichi 1st Toyota Road Central Research Institute Co., Ltd. (72) Inventor Seiji Onoda Nagachite Town, Aichi Prefecture 1 in 41, Yokomichi, Yokoji Inside Toyota Central Research Institute Co., Ltd.

Claims (8)

[Claims] 1. An adsorption carrier carrying a first additive comprising one or both of a transition element and a transition element compound, and a second additive comprising one or more of halogen or a halogen compound. Deodorant to do. 2. The deodorant according to claim 1, wherein one or both of the transition element or the transition element compound is copper or one or both of the copper compound. 3. The deodorant according to claim 2, wherein the copper compound is one or more selected from the group consisting of copper nitrate, copper sulfate, and cupric chloride. 4. The method according to claim 1, wherein
The deodorant, wherein the first additive is carried in an amount of 0.5 to 30 parts by weight based on 100 parts by weight of the adsorption carrier. 5. The method according to any one of claims 1 to 4,
A deodorant characterized in that the halogen is bromine or iodine. 6. The method according to any one of claims 1 to 5,
The above halogen compounds are KBr, NaBr, NH ₄ B
r, I ₂ O ₅ , KI, NaI, NH ₄ I, and HIO ₃
The deodorant is one or two or more selected from the group. 7. The method according to any one of claims 1 to 6,
The deodorant, wherein the second additive is supported in an amount of 0.1 to 60 parts by weight based on 100 parts by weight of the adsorption carrier. 8. The method according to any one of claims 1 to 7,
A deodorant characterized in that the adsorption carrier is one or more selected from the group consisting of activated carbon, hydrous magnesium silicate clay mineral, silica gel, zeolite, and activated alumina.