JP3215848B2 - Ozone decomposition catalyst and method for producing the same - Google Patents
Ozone decomposition catalyst and method for producing the sameInfo
- Publication number
- JP3215848B2 JP3215848B2 JP23264890A JP23264890A JP3215848B2 JP 3215848 B2 JP3215848 B2 JP 3215848B2 JP 23264890 A JP23264890 A JP 23264890A JP 23264890 A JP23264890 A JP 23264890A JP 3215848 B2 JP3215848 B2 JP 3215848B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- ozone
- ozone decomposition
- potassium
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ガス中に含有されるオゾンを分解するため
のオゾン分解用触媒及びその製造方法に関する。更に詳
しくは、耐久性に優れるオゾン分解用触媒およびその製
造方法に関する。Description: TECHNICAL FIELD The present invention relates to an ozone decomposition catalyst for decomposing ozone contained in a gas and a method for producing the same. More specifically, the present invention relates to an ozone decomposition catalyst having excellent durability and a method for producing the same.
［従来の技術］ オゾンは強力な酸化作用を有するので、上水の浄化、
殺菌、下水もしくは工業廃液の処理、排気ガスの脱硝処
理および脱臭処理等に幅広く利用されているが、酸化処
理を充分に行わせるため過剰のオゾンが通常使用されて
おり、そのため余剰の未反応オゾンが排出される。[Prior art] Since ozone has a strong oxidizing effect, purification of clean water,
It is widely used for sterilization, treatment of sewage or industrial waste liquid, denitration treatment of exhaust gas, deodorization treatment, etc., but excess ozone is usually used to sufficiently perform oxidation treatment, and therefore excess unreacted ozone Is discharged.
また、電子写真複写コロナ放電を伴う装置からもオゾ
ンが放出されている。In addition, ozone is also released from an apparatus involving electrophotographic copying corona discharge.
オゾンは非常に臭気の強い気体でありかつ空気中に0.
1ppm以上存在する場合は、人体に悪影響をおよぼすの
で、この余剰オゾンを分解除去する必要がある。Ozone is a very odorous gas and contains 0.
If it is present in an amount of 1 ppm or more, it has an adverse effect on the human body, so it is necessary to decompose and remove this excess ozone.
従って、オゾンを無害化することは環境衛生上重要に
なっている。Therefore, detoxification of ozone is important in environmental health.
従来、このオゾン分解方法として、オゾンの活性炭に
よる吸着方法、あるいは活性炭やアルミナ、シリカ、チ
タニア等の無機質担体や紙質のハニカム担体にマンガ
ン、アルカリ金属、アルカリ土類金属、ニッケル、コバ
ルト、クロム、銅、銀、白金、パラジウム、ロジウム等
の触媒成分を付着した触着とオゾンとを接触分解させる
方法が特公昭56−17939号公報、特公昭59−33410号公
報、特開昭62−201648号公報等に記載されている。Conventionally, as the ozonolysis method, an ozone adsorption method using activated carbon, or manganese, an alkali metal, an alkaline earth metal, nickel, cobalt, chromium, copper A method of catalytically decomposing ozone with a catalyst having silver, platinum, palladium, rhodium or the like attached thereto is disclosed in JP-B-56-17939, JP-B-59-33410, and JP-A-62-201648. And so on.
特に、特公昭59−33410号公報には、活性炭にマンガ
ンとアルカリ金属（ナトリウム、カリウム）および／ま
たはアルカリ土類金属を担持したオゾン分解用触媒が記
載されているが、活性炭にカリウムのみを担持したオゾ
ン分解用触媒は何ら記載されていない。In particular, Japanese Patent Publication No. 59-33410 discloses an ozone decomposition catalyst in which activated carbon carries manganese and an alkali metal (sodium, potassium) and / or an alkaline earth metal. No described ozone decomposition catalyst is described.
［発明が解決しようとする課題］ 前記のようなオゾン分解用触媒は、一般的に50℃以下
の常温で使用され、この条件下では粒状活性炭や活性炭
ハニカム等は初期性能は良好であるが耐久性能に乏し
い。[Problems to be Solved by the Invention] The above-mentioned catalyst for ozone decomposition is generally used at room temperature of 50 ° C or less. Under these conditions, granular activated carbon or activated carbon honeycomb has good initial performance but is durable. Poor performance.
また、アルミナ、シリカ、チタニア等の無機質担体や
コーディエライト、紙質等のハニカム担体にマンガン、
ニッケル、コバルト、クロム、銅、銀、白金、パラジウ
ム、ロジウム等の触媒成分を付着したものもあるが、こ
れらの触媒を使用するとコストアップとなり好ましくな
い。In addition, alumina, silica, inorganic carriers such as titania and cordierite, manganese to the honeycomb carrier such as paper, manganese,
There are catalysts to which a catalyst component such as nickel, cobalt, chromium, copper, silver, platinum, palladium, and rhodium is attached.
本発明の目的は、コストの安い活性炭を使用して、長
時間使用による触媒性能の低下の少ないオゾン分解用触
媒を提供するものである。An object of the present invention is to provide an ozone decomposing catalyst which uses inexpensive activated carbon and has a small decrease in catalytic performance due to long-term use.
［課題を解決するための手段］ 本発明は、前記課題を解決するために成されたもので
ある。すなわち、本発明のオゾン分解用触媒は、活性炭
にカリウム化合物のみを含有することを特徴とするオゾ
ン分解用触媒で、また、本発明のオゾン分解用触媒の製
造方法は活性炭をカリウム化合物溶液中に含浸後、乾燥
することを特徴とする活性炭にカリウム化合物のみを担
持したオゾン分解用触媒の製造方法である。[Means for Solving the Problems] The present invention has been made to solve the above problems. That is, the ozone decomposition catalyst of the present invention is an ozone decomposition catalyst characterized in that it contains only a potassium compound in activated carbon, and the method for producing an ozone decomposition catalyst of the present invention comprises: This is a method for producing a catalyst for ozone decomposition in which only a potassium compound is supported on activated carbon, characterized by drying after impregnation.
カリウムの担持量は、活性炭１あたり１〜60gで良
い。カリウムの担持が、活性炭１あたり1g未満だと、
オゾン分解性能が劣り、60gを越えて担持してもオゾン
分解性能の向上はみられない。The loading amount of potassium may be 1 to 60 g per activated carbon. If the loading of potassium is less than 1 g per activated carbon,
The ozonolysis performance is inferior, and the ozonolysis performance is not improved even if the ozonolysis load exceeds 60 g.
［作用］ 本発明の活性炭にカリウム化合物のみを担持したオゾ
ン分解用触媒の作用は明確ではないが、活性炭と還元作
用の強いカリウムの相互作用によりオゾンをより効率的
に浄化できるものと考えられる。[Action] The action of the catalyst for ozone decomposition in which only the potassium compound is supported on the activated carbon of the present invention is not clear, but it is considered that ozone can be more efficiently purified by the interaction between activated carbon and potassium having a strong reducing action.
［実施例］ 以下に、本発明の実施例について説明する。Examples Examples of the present invention will be described below.
実施例１ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを10g/担持してオゾン分解用触媒１を得た。Example 1 Activated carbon (manufactured by Cataler Industry Co., Ltd.) of 4 to 8 mesh was immersed in a potassium hydroxide solution, dried, and activated carbon was loaded with 10 g of potassium to obtain a catalyst 1 for ozone decomposition.
実施例２ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを3g/担持してオゾン分解用触媒２を得た。Example 2 Activated carbon (manufactured by Cataler Industry Co., Ltd.) of 4 to 8 mesh was immersed in a potassium hydroxide solution, dried, and activated carbon was loaded with 3 g of potassium to obtain a catalyst 2 for ozone decomposition.
実施例３ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを25g/担持してオゾン分解用触媒３を得た。Example 3 Activated carbon of 4 to 8 mesh (manufactured by Cataler Industry Co., Ltd.) was immersed in a potassium hydroxide solution, dried, and activated carbon was loaded with 25 g of potassium to obtain an ozone decomposition catalyst 3.
実施例４ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを50g/担持してオゾン分解用触媒４を得た。Example 4 Activated carbon of 4 to 8 mesh (manufactured by Cataler Industry Co., Ltd.) was immersed in a potassium hydroxide solution and dried to obtain 50 g / potassium of potassium on the activated carbon to obtain an ozone decomposition catalyst 4.
実施例５ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を塩化カリウム溶液に浸漬、乾燥して活性炭にカリ
ウムを10g/担持してオゾン分解用触媒５を得た。Example 5 Activated carbon (manufactured by Cataler Industry Co., Ltd.) of 4 to 8 mesh was immersed in a potassium chloride solution, dried, and 10 g / potassium was loaded on activated carbon to obtain a catalyst 5 for ozone decomposition.
実施例６ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を硝酸カリウム溶液に浸漬、乾燥して活性炭にカリ
ウムを10g/担持してオゾン分解用触媒６を得た。Example 6 Activated carbon of 4 to 8 mesh (manufactured by Cataler Industry Co., Ltd.) was immersed in a potassium nitrate solution and dried to obtain 10 g / potassium of potassium on the activated carbon to obtain an ozone decomposition catalyst 6.
実施例７ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを60g/担持してオゾン分解用触媒７を得た。Example 7 4 to 8 mesh activated carbon (manufactured by Cataler Industry Co., Ltd.) was immersed in a potassium hydroxide solution, dried, and 60 g / potassium was loaded on the activated carbon to obtain a catalyst 7 for ozone decomposition.
比較例１ 市販の４〜８メッシュの活性炭（武田薬品工業株式会
社製）に何も担持しなかった。Comparative Example 1 Nothing was supported on a commercially available 4 to 8 mesh activated carbon (manufactured by Takeda Pharmaceutical Co., Ltd.).
比較例２ 市販の４〜８メッシュの活性炭（武田薬品工業株式会
社製）を使用した。マンガンの担持量は、10g/であっ
た。（オゾン分解用触媒Ａ） 比較例３ ４〜８メッシュの活性炭（キャタラー工業株式会社
製）を水酸化カリウム溶液に浸漬、乾燥して活性炭にカ
リウムを0.5g/担持してオゾン分解用触媒Ｂを得た。Comparative Example 2 Commercially available 4 to 8 mesh activated carbon (manufactured by Takeda Pharmaceutical Co., Ltd.) was used. The supported amount of manganese was 10 g /. (Ozone Decomposition Catalyst A) Comparative Example 3 4-8 mesh activated carbon (manufactured by Cataler Industry Co., Ltd.) was immersed in a potassium hydroxide solution, dried, and 0.5 g / potassium was loaded on activated carbon to form an ozone decomposition catalyst B. Obtained.
このようにして得た触媒１〜７、触媒Ａ〜Ｂを次の条
件で耐久および評価した。The catalysts 1 to 7 and the catalysts A and B thus obtained were evaluated for durability and durability under the following conditions.
結果を第１表に示す。また、耐久条件１（活性炭30φ
×17L、風量２／分、オゾン2000ppm［4.3g/m3］）に
おける実施例１および比較例２の耐久性能を第１図、耐
久条件２（活性炭30φ×170L、風量２／分、オゾン10
00ppm［2.15g/m3］）における実施例１および比較例２
の耐久性能を第２図に示す。 The results are shown in Table 1. In addition, durability condition 1 (activated carbon 30φ
FIG. 1 shows the durability performance of Example 1 and Comparative Example 2 at × 17 L, air flow rate 2 / min, ozone 2000 ppm [4.3 g / m 3 ]), and durability condition 2 (activated carbon 30φ × 170 L, air flow rate 2 / min, ozone 10
Example 1 and Comparative Example 2 at 00 ppm [2.15 g / m 3 ])
FIG. 2 shows the durability performance of the.
［発明の効果］ 第１図、第２図および第１表から明らかなように本発
明品は、従来品と比べて耐久性能が優れていることが判
る。すなわち何も担持しない活性炭は耐久条件１におい
て100時間経過後には早くもオゾン分解率が０となって
いる。10gマンガンを担持した比較例２も、耐久条件１
において100時間経過後にはオゾン分解率が25％におち
ている。これに対し、本発明（実施例１〜７）では耐久
条件１において100時間経過後においても、いずれも80
％台のオゾン分解率を示している。またカリウムを0.5g
（1g未満）担持した比較例３は、10gマンガンを担持し
た比較例２とほぼ同様の数値を示し、耐久性能が本発明
のものに比べ劣っているといえる。 [Effects of the Invention] As is clear from FIGS. 1, 2 and Table 1, it can be seen that the product of the present invention is superior in durability performance to the conventional product. That is, the activated carbon that does not carry anything has an ozone decomposition rate of 0 as early as 100 hours after the endurance condition 1. Comparative Example 2 supporting 10 g of manganese also had durability condition 1
After 100 hours, the ozone decomposition rate has dropped to 25%. On the other hand, in the present invention (Examples 1 to 7), even after 100 hours had passed under the durability condition 1,
It shows ozone decomposition rates on the order of%. 0.5g of potassium
Comparative Example 3 carrying less than 1 g of manganese exhibited almost the same numerical value as Comparative Example 2 carrying 10 g of manganese, indicating that the durability was inferior to that of the present invention.
さらに耐久条件２においても同様の結果が示されてい
る。本発明は200時間経過時においては全く分解性能は
劣らず、300時間経過時においても僅かに分解性能が劣
るのみであり、耐久性能に優れていることが判る。Further, the same result is shown under the durability condition 2. It can be seen that the decomposition performance of the present invention is not inferior at all after 200 hours, and that the decomposition performance is only slightly inferior even after 300 hours.
第１図は耐久条件１における実施例１と比較例２におけ
る経過時間によるオゾン分解率を示す曲線図である。 第２図は耐久条件２における実施例１と比較例２におけ
る経過時間によるオゾン分解率を示す曲線図である。FIG. 1 is a curve diagram showing the ozone decomposition rate depending on the elapsed time in Example 1 and Comparative Example 2 under the durability condition 1. FIG. 2 is a curve diagram showing the ozone decomposition rate according to the elapsed time in Example 1 and Comparative Example 2 under the durability condition 2.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 21/00 - 37/36 B01D 53/86 ＣＡ（ＳＴＮ)────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B01J 21/00-37/36 B01D 53/86 CA (STN)
Claims (2)
とを特徴とするオゾン分解用触媒。1. An ozone decomposing catalyst characterized in that only potassium compound is supported on activated carbon.
燥することことを特徴とする活性炭にカリウム化合物の
みを担持したオゾン分解用触媒の製造方法。2. A method for producing an ozone decomposing catalyst in which activated carbon carries only a potassium compound, wherein the activated carbon is impregnated with a potassium compound solution and then dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23264890A JP3215848B2 (en) | 1990-08-31 | 1990-08-31 | Ozone decomposition catalyst and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23264890A JP3215848B2 (en) | 1990-08-31 | 1990-08-31 | Ozone decomposition catalyst and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110037A JPH04110037A (en) | 1992-04-10 |
| JP3215848B2 true JP3215848B2 (en) | 2001-10-09 |
Family
ID=16942589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23264890A Expired - Fee Related JP3215848B2 (en) | 1990-08-31 | 1990-08-31 | Ozone decomposition catalyst and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3215848B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5536302A (en) * | 1994-03-23 | 1996-07-16 | Air Products And Chemicals, Inc. | Adsorbent for removal of trace oxygen from inert gases |
| KR100510620B1 (en) * | 2000-12-28 | 2005-08-31 | 도시바 라이텍쿠 가부시키가이샤 | Deodorizing device |
| CN110152691A (en) * | 2018-03-30 | 2019-08-23 | 铜仁学院 | A kind of preparation method of ozone oxidation catalyst |
-
1990
- 1990-08-31 JP JP23264890A patent/JP3215848B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110037A (en) | 1992-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |