JPS62201648A - Catalyst for decomposing ozone - Google Patents
Catalyst for decomposing ozoneInfo
- Publication number
- JPS62201648A JPS62201648A JP61044076A JP4407686A JPS62201648A JP S62201648 A JPS62201648 A JP S62201648A JP 61044076 A JP61044076 A JP 61044076A JP 4407686 A JP4407686 A JP 4407686A JP S62201648 A JPS62201648 A JP S62201648A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- ozone
- carrier
- alumina
- silica
- 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.)
- Granted
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000003054 catalyst Substances 0.000 title claims abstract description 38
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000003197 catalytic effect Effects 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 21
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 239000010948 rhodium Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052763 palladium Inorganic materials 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052703 rhodium Inorganic materials 0.000 claims description 6
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 3
- 239000011707 mineral Substances 0.000 abstract 3
- 239000002648 laminated material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- -1 Pt) Chemical class 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- IXSUHTFXKKBBJP-UHFFFAOYSA-L azanide;platinum(2+);dinitrite Chemical compound [NH2-].[NH2-].[Pt+2].[O-]N=O.[O-]N=O IXSUHTFXKKBBJP-UHFFFAOYSA-L 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- VXNYVYJABGOSBX-UHFFFAOYSA-N rhodium(3+);trinitrate Chemical compound [Rh+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VXNYVYJABGOSBX-UHFFFAOYSA-N 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 235000018936 Vitellaria paradoxa Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野）
本発明はオゾン分解触媒、特にガス中に含有されるオゾ
ンを接触的に分解する触媒に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an ozone decomposition catalyst, particularly to a catalyst that catalytically decomposes ozone contained in gas.
〈従来の技術とその問題点〉
オゾンは強い酸化能を有し、分解すると無害な酸素にな
るために脱臭、殺菌、漂白または排水中のＣＯＤ減少等
の目的でさまざまな分野において幅広く利用されている
。しかし処理に利用されたオゾンは一部未反応のまま大
気中に放出されるために光化学スモッグ等の二次公害を
発生させる恐れがある。また、航空機が成層圏を飛行す
る場合機内にオゾンを含む空気が導入されるため乗客や
搭乗員に悪影響を及ぼす危険性がある。<Conventional technology and its problems> Ozone has strong oxidizing ability and becomes harmless oxygen when decomposed, so it is widely used in various fields for purposes such as deodorization, sterilization, bleaching, and reducing COD in wastewater. There is. However, some of the ozone used in the treatment is released into the atmosphere unreacted, which may cause secondary pollution such as photochemical smog. Furthermore, when an aircraft flies in the stratosphere, air containing ozone is introduced into the cabin, which poses a risk of adversely affecting passengers and crew.
さらに、最近、各種の高電圧発生装置を組み込んだ機器
、例えば乾式の複写機等からのオゾン発生が問題となっ
ており、これ等の機器は主に室内に置かれるためにオゾ
ンの発生は微口であっても室内が汚染される。Furthermore, ozone generation from devices that incorporate various high-voltage generators, such as dry-type copying machines, has recently become a problem, and since these devices are mainly placed indoors, ozone generation is minimal. Even the mouth can contaminate the room.
オゾンの臭いは１１）Ｉ）−以下の濃度で感知でき、２
ｐｐｍ以上の濃度では呼吸器系に刺激を引き起こし、
人体に有害となるために各種の発生源から排出されるオ
ゾンを除去し、無害化する必要がある。The odor of ozone can be detected at concentrations below 11)I)-, and 2
Concentrations above ppm cause irritation to the respiratory system,
Ozone, which is harmful to the human body, is emitted from various sources and needs to be removed and rendered harmless.
従来、用いられてきた廃オゾンの処理技術としては活性
炭法、薬液洗浄法および熱分解法がある。Conventionally used waste ozone treatment techniques include an activated carbon method, a chemical cleaning method, and a thermal decomposition method.
活性炭法は低濃度オゾンの処理に利用されているが、オ
ゾン分解の進行に伴って、活性炭が消耗するために補充
する必要があり、また高濃度のオゾンを処理する場合は
反応熱により活性炭自身が発火、燃焼する危険性がある
ので取り扱い上面層がある。The activated carbon method is used to treat low-concentration ozone, but as ozone decomposition progresses, the activated carbon is consumed and needs to be replenished, and when treating high-concentration ozone, the activated carbon itself is destroyed by the heat of reaction. Since there is a risk of ignition and combustion, there is a layer on the top that must be handled.
薬液洗浄法は還元性物質の水溶液で廃オゾンを洗浄する
ために処理コストが高く、廃水処理の問題も生じる。The chemical cleaning method involves cleaning waste ozone with an aqueous solution of a reducing substance, resulting in high treatment costs and problems in wastewater treatment.
熱分解法は分解効率を上げるためには３００℃以上の加
熱が必要であり、多量の排ガスを処理するためには加熱
費用がかかり、処理コストが高くなるなどの欠点がある
。The thermal decomposition method requires heating to 300° C. or higher in order to increase the decomposition efficiency, and has drawbacks such as high heating costs and high processing costs in order to treat a large amount of exhaust gas.
一方、近年廃オゾン処理方法として触媒分解法が研究さ
れており、この方法は発火、爆発の危険性がなく、廃水
処理も不要であり、低コストでオゾンを分解除去できる
ために有利な方法とされている。On the other hand, in recent years, research has been conducted on the catalytic decomposition method as a waste ozone treatment method.This method is advantageous because it has no risk of ignition or explosion, does not require wastewater treatment, and can decompose and remove ozone at a low cost. has been done.
オゾン分解触媒には貴金属を用いた触媒（特開昭５７−
１２２９４２号など）、ニッケル、マンガン、コバルト
等の酸化物を用いた触媒（特開昭６０−９７０４９号）
が知られているが、それぞれ室温から１００℃での低温
度領域での活性が低く、又、実用触媒としての分解効率
が低く、耐久性にも問題があるので、低温度領域で高活
性高耐久性を示す触媒の提供が要望されている。A catalyst using precious metals as an ozone decomposition catalyst (Japanese Unexamined Patent Publication No. 57-
122942, etc.), catalysts using oxides of nickel, manganese, cobalt, etc. (JP-A-60-97049)
However, each has low activity in the low temperature range from room temperature to 100°C, and also has low decomposition efficiency as a practical catalyst and has problems with durability. There is a need to provide catalysts that exhibit durability.
〈発明の目的〉
本発明の目的は、ガス中に含まれるオゾンを酸素へ接触
的に分解するにあたり、低温活性に優れ、耐久性の高い
オゾン分解触媒を提供するものである。<Object of the Invention> An object of the present invention is to provide an ozone decomposition catalyst that has excellent low-temperature activity and is highly durable when catalytically decomposing ozone contained in gas into oxygen.
〈問題点を解決するための手段〉
本発明者らは、上記目的に沿って問題点を検討した結果
、無機質１１１１状担体にオゾン分解能を有する触媒物
質を担持せしめてなるオゾン分解触媒が５０℃以下、特
に１０〜２０℃の低温でも優れたオゾン分解性能を示し
、且つ耐久性にも優れることを見い出し、本発明を完成
するに至った。すなわち、本発明の触媒の特徴はオゾン
分解触媒に担体として高比表面積を有する無機質ｌＩＮ
状成状体型体くは積層体等の如き無機質繊維状担体を用
いることにある。本発明者らは、例えば、アルミナ、シ
リカ、チタニア、アルミナ−シリカ等からなる無機質ｍ
Ｎは通気性、ガスの分散性、触媒物質の保持性が優れて
おり、耐熱性も高く、また熱容量が小さいという特性を
有し、該担体にはオゾン分解能を有する触媒物質は高分
散状態で担持されるために、従来のベレット型やモノリ
ス型触媒と異なりオゾンを含有するガスと接触せしめた
とき、その通気性により接触効率が非常に高くなり、そ
の結果優れたオゾン分解性能を有するということを知見
した。<Means for Solving the Problems> As a result of studying the problems in accordance with the above objectives, the present inventors found that an ozone decomposition catalyst comprising an inorganic 1111-like carrier supporting a catalytic material having ozone decomposition ability was developed at 50°C. Hereinafter, it was discovered that it exhibits excellent ozone decomposition performance even at low temperatures of 10 to 20°C, and is also excellent in durability, and the present invention has been completed. That is, the feature of the catalyst of the present invention is that an inorganic lIN having a high specific surface area is used as a carrier for the ozone decomposition catalyst.
The purpose is to use an inorganic fibrous carrier such as a shaped body or a laminate. The present inventors have discovered that an inorganic matrix consisting of, for example, alumina, silica, titania, alumina-silica, etc.
N has excellent air permeability, gas dispersibility, and catalytic material retention, and has high heat resistance and low heat capacity. Because it is supported, unlike conventional pellet-type or monolith-type catalysts, when it comes into contact with ozone-containing gas, the contact efficiency is extremely high due to its air permeability, resulting in excellent ozone decomposition performance. I found out.
本発明にかかる無機質繊維状担体としては、例えば、ア
ルミナ、シリカ、チタニア、アルミナ−シリカ、ジルコ
ニア、アルミナ−シリカ−マグネ、シア等からなる繊維
の成型体もしくは積層体を用いることができるが、特に
アルミナ系繊維が好ましい。As the inorganic fibrous carrier according to the present invention, for example, molded bodies or laminates of fibers made of alumina, silica, titania, alumina-silica, zirconia, alumina-silica-magne, shea, etc. can be used, but in particular Alumina fibers are preferred.
無機質ａｒｍの比表面積は少なくとも１０ＴｒＬ ７０
以上あればよいが、触媒物質の分散性向上のため高比表
面積を有する程よ＜１００〜１５０ＴｒＬ２／Ｑのもの
が特に好ましく、低温活性にも優れる。The specific surface area of the inorganic arm is at least 10TrL 70
Any above is acceptable, but those having a high specific surface area of <100 to 150 TrL2/Q are particularly preferable in order to improve the dispersibility of the catalyst substance, and are also excellent in low-temperature activity.
又、繊維径は０．５〜２０μｍ１特に１〜１０μｍが好
ましく、成型体もしくは積層体のかさ密度はガスの通気
性および形状維持のためには０．００５〜ＩＣＪ／ｃｃ
、特に０．０２〜０．２ｇ／ｃｃが好ましい。The fiber diameter is preferably 0.5 to 20 μm, especially 1 to 10 μm, and the bulk density of the molded product or laminate is 0.005 to ICJ/cc for gas permeability and shape maintenance.
, particularly preferably 0.02 to 0.2 g/cc.
本発明のオゾン分解触媒は上記の性質を有するような無
機質繊維状担体にオゾン分解能を有する触媒物質、例え
ば、マンガン（Ｍｎ）、鉄（Ｆｅ）、銅（ＣＵ）、コバ
ルト（Ｃｏ）、ニッケル（Ｎｉ）、銀（Ａｇ）、白金（
Ｐｔ）、パラジウム（Ｐｄ）、ロジウム（Ｒｈ）等の金
属塩の水溶液を含浸担持後、乾燥し焼成するか必要に応
じてさらに還元処理する等の従来の方法によって製造す
ることができる。該触媒物質の担持量は無機質繊維状担
体に対して０．１〜３０重量％、好ましくは０．３〜１
０重量％の範囲であるが、これらに限定されるものでは
ない。The ozone decomposition catalyst of the present invention uses an inorganic fibrous carrier having the above properties and a catalytic material having an ozone decomposition ability, such as manganese (Mn), iron (Fe), copper (CU), cobalt (Co), nickel ( Ni), silver (Ag), platinum (
It can be produced by a conventional method such as impregnating and supporting an aqueous solution of a metal salt such as Pt), palladium (Pd), or rhodium (Rh), followed by drying and firing, or further reduction treatment if necessary. The supported amount of the catalyst substance is 0.1 to 30% by weight, preferably 0.3 to 1% by weight based on the inorganic fibrous carrier.
The range is, but not limited to, 0% by weight.
本発明のオゾン分解触媒の製造方法の例として白金族金
属を使用した場合を一例として示すと、無！！！ １４
１ Ｍ状担体に白金、パラジウム、ロジウムの水溶液の
化合物、例えば塩化白金酸、ジニトロジアンミン白金、
硝酸パラジウム、硝酸ロジウム等の水溶液を用いて；あ
るいはコロイド状の白金、パラジウム、ロジウムを用い
て公知の方法で担持し、その後乾燥、空気中で焼成し、
又は必要により水素−窒素中で還元するかヒドラジン等
の還元剤を用いて所定の触媒を得る。As an example of the method for producing the ozone decomposition catalyst of the present invention, when a platinum group metal is used, there is no! ! ! 14
1 A compound of an aqueous solution of platinum, palladium, or rhodium on a M-shaped carrier, such as chloroplatinic acid, dinitrodiammine platinum,
Using an aqueous solution of palladium nitrate, rhodium nitrate, etc.; or using colloidal platinum, palladium, rhodium, supported by a known method, then dried and fired in air,
Alternatively, if necessary, a desired catalyst can be obtained by reduction in a hydrogen-nitrogen atmosphere or by using a reducing agent such as hydrazine.
白金、パラジウムおよびロジウムよりなる群から選ばれ
た少なくとも１種の金属の担持量は無機質繊維状担体に
対して０．１重量％以上、好ましくは０．３〜５重齢％
である。The amount of at least one metal selected from the group consisting of platinum, palladium, and rhodium supported is 0.1% by weight or more, preferably 0.3 to 5% by weight, based on the inorganic fibrous carrier.
It is.
さらに、これら白金族金属のうち一部をマンガン、銀、
鉄、銅、コバルト、ニッケル等の金属の酸化物で置換す
ることも、又、白金族金属に添加することも可能である
。Furthermore, some of these platinum group metals include manganese, silver,
It is also possible to substitute with oxides of metals such as iron, copper, cobalt, nickel, etc., or to add them to platinum group metals.
本発明の触媒によって処理されるオゾン濃度はガス中に
０．０１〜ｉｏ、ｏｏｏｐｐｍ程度含有するものである
が、必らずしもこの範囲に限定されるものではない。The ozone concentration treated by the catalyst of the present invention is about 0.01 to io, ooppm contained in the gas, but is not necessarily limited to this range.
以下実施例および比較例を用いて本発明をさらに詳細に
説明するが、本発明はこれら実施例のみに限定されるも
のではない。The present invention will be explained in more detail below using Examples and Comparative Examples, but the present invention is not limited only to these Examples.
実施例 １
平均繊維径約３μｍ、比表面積１５０ＴｒＬ２／Ｑを有
し、シリカ５１ｍ％およびアルミナ９５重量％よりなる
無機質繊維状担体を８０℃の塩化白金酸を含有する水溶
液に浸漬した。同温度で１時間保持したのち担体を取り
出し１２０℃で３時間乾燥後空気中４００℃で２時間焼
成して白金として２重量％を担持せしめた。Example 1 An inorganic fibrous carrier having an average fiber diameter of about 3 μm, a specific surface area of 150 TrL2/Q, and consisting of 51 m% of silica and 95% by weight of alumina was immersed in an aqueous solution containing chloroplatinic acid at 80°C. After holding at the same temperature for 1 hour, the carrier was taken out, dried at 120°C for 3 hours, and then calcined in air at 400°C for 2 hours to support 2% by weight of platinum.
実施例 ２
実施例１と同様の担体にジニトロジアンミン白金と硝酸
パラジウムを含有する水溶液に３分間浸漬した。次いで
、この担体を１５０℃で２時間乾燥後空気中４５０℃で
２時間焼成し、白金として０、８重量％、パラジウムと
してｏ、 ａ ｍ ｍ％を担持せしめた。Example 2 The same carrier as in Example 1 was immersed in an aqueous solution containing dinitrodiammine platinum and palladium nitrate for 3 minutes. Next, this carrier was dried at 150° C. for 2 hours and then calcined in air at 450° C. for 2 hours to support 0.8% by weight of platinum and 0.8% by weight of palladium.
実施例 ３
平均繊維径約２μｍ、比表面積９５ＴｒＬ２／Ｑを有し
、シリカ１５重量％およびアルミナ８５重量％よりなる
無機質繊維状担体を硝酸ニッケルと硝酸マンガンを含有
する水溶液に浸漬し、この担体を８０℃で１５時間乾燥
した後、６００℃で２時間空気中で焼成した。次いで、
ジニトロジアンミン白金を含有する水溶液に浸漬し、１
５０℃で２時間乾燥後空気中４００℃で２時間焼成して
白金として０．８重量％、酸化ニッケル（Ｎｉｐ＞とし
て０．５重量％、酸化マンガン（ＭｎＯ２）として０．
５重量％担持せしめた。Example 3 An inorganic fibrous carrier having an average fiber diameter of about 2 μm, a specific surface area of 95 TrL2/Q, and consisting of 15% by weight of silica and 85% by weight of alumina was immersed in an aqueous solution containing nickel nitrate and manganese nitrate. After drying at 80°C for 15 hours, it was fired in air at 600°C for 2 hours. Then,
Immersed in an aqueous solution containing dinitrodiammine platinum,
After drying at 50°C for 2 hours, it was fired in air at 400°C for 2 hours to obtain 0.8% by weight of platinum, 0.5% by weight of nickel oxide (Nip>), and 0.5% by weight of manganese oxide (MnO2).
It was supported at 5% by weight.
実施例 ４
平均ＩＭ径約６μｍ、比表面積１２０ＴｒＬ２／Ｑを有
するシリカ繊維にアルミナゾルを塗布し、１５０℃で３
時間乾燥後、６００℃で２時間空気中で焼成してアルミ
ナとして８重置％被覆せしめた。Example 4 Alumina sol was applied to silica fibers having an average IM diameter of about 6 μm and a specific surface area of 120 TrL2/Q, and
After drying for an hour, it was calcined in air at 600° C. for 2 hours to coat 8 layers of alumina.
次いで、硝酸パラジウムと硝酸ロジウムを含有する水溶
液に浸漬して実施例２と同様にしてパラジウムとして１
．９ｆｉｆｆｉ％、ロジウムとして０．１ｆｌ１％を担
持せしめた。Next, it was immersed in an aqueous solution containing palladium nitrate and rhodium nitrate to obtain 1 as palladium in the same manner as in Example 2.
．． 9fiffi% and 0.1fl1% of rhodium was supported.
比較例 １
シリカ５重量％を含有する比表面積１５０ＴｒＬ２７ｇ
の活性アルミナ粉末を３ｍ径、長さ３ｍのタブレットに
打錠成型し、このベレットを８０℃の塩化白金酸を含有
する水溶液に浸漬した。次いで実施例１と同様にして白
金として２重量％を担持せしめた。Comparative Example 1 Specific surface area 150TrL27g containing 5% by weight of silica
The activated alumina powder was compressed into a tablet with a diameter of 3 m and a length of 3 m, and the pellet was immersed in an aqueous solution containing chloroplatinic acid at 80°C. Next, in the same manner as in Example 1, 2% by weight of platinum was supported.
実施例 ５
実施例１〜４、比較例１で得られた各触媒につき、次に
ような方法でオゾン分解率を求めた。Example 5 For each catalyst obtained in Examples 1 to 4 and Comparative Example 1, the ozone decomposition rate was determined by the following method.
内径２０ａｍのパイレックス製反応管に触媒１２゜４−
を充填し、オゾンを１０ｐｐｎ＋含有する空気を０．２
５Ｎｍ３／ｈｒの流速（空間速度２０． ＯＯＯＨｒ−
１）で触媒層に導入し、反応温度２０〜１００℃におけ
るオゾン分解率を求めた。Catalyst 12゜4- in a Pyrex reaction tube with an inner diameter of 20 am.
and 0.2% of air containing 10ppn+ ozone.
Flow rate of 5 Nm3/hr (space velocity 20.OOOHr-
1) was introduced into the catalyst layer, and the ozone decomposition rate at a reaction temperature of 20 to 100°C was determined.
オゾン分解率は次式により算出した。The ozone decomposition rate was calculated using the following formula.
オゾン分解率（２）＝
得られた結果を表−１に示す。表−１より本発明による
触媒は２０℃の室温でオゾン分解率９５％以上あり低温
活性に非常に優れているが、比較例１のベレット型触媒
は２０℃でのオゾン分解率が５４％であり、本発明の繊
維状触媒に比較して低温活性が劣っている。Ozone decomposition rate (2) = The obtained results are shown in Table-1. Table 1 shows that the catalyst according to the present invention has an ozone decomposition rate of 95% or more at room temperature of 20°C and has excellent low-temperature activity, but the pellet type catalyst of Comparative Example 1 has an ozone decomposition rate of 54% at 20°C. However, the low-temperature activity is inferior to that of the fibrous catalyst of the present invention.
実施例 ６
実施例１〜２で得られた触媒につき実施例５と同様の方
法で１００時間の耐久試験を行なった。Example 6 The catalysts obtained in Examples 1 and 2 were subjected to a 100 hour durability test in the same manner as in Example 5.
得られた結果を表−２に示す。表−２より本発明による
触媒は１００時間の耐久実験経過後もオゾン分解率は反
応初期と同じであり、耐久性の優れた触媒であることが
わかる。The results obtained are shown in Table-2. From Table 2, it can be seen that the ozone decomposition rate of the catalyst according to the present invention was the same as that at the beginning of the reaction even after a 100-hour durability experiment, indicating that it is a catalyst with excellent durability.
表 −１オゾン分解率（％）
手 続 補 正 書 く自発）昭和６１年
３月 ３１日Table 1: Ozone decomposition rate (%) (procedures, amendments, voluntary) 1985
March 31st
Claims (4)
るオゾン分解触媒において、担体が無機質繊維状担体で
あることを特徴とするオゾン分解触媒。(1) An ozone decomposition catalyst comprising a catalytic material having an ozone decomposition ability supported, wherein the support is an inorganic fibrous support.
（Ｃｕ）、コバルト（Ｃｏ）、ニッケル（Ｎｉ）、銀（
Ａｇ）、白金（Ｐｔ）、パラジウム（Ｐｄ）およびロジ
ウム（Ｒｈ）よりなる群から選ばれた少なくとも一種の
元素の金属、酸化物または複合酸化物である特許請求の
範囲第（１）項記載の触媒。(2) The catalyst material is manganese (Mn), iron (Fe), copper (Cu), cobalt (Co), nickel (Ni), silver (
Claim (1), which is a metal, oxide or composite oxide of at least one element selected from the group consisting of Ag), platinum (Pt), palladium (Pd) and rhodium (Rh). catalyst.
アまたはアルミナ−シリカ担体である特許請求の範囲第
（１）項記載の触媒。(3) The catalyst according to claim (1), wherein the inorganic fibrous carrier is an alumina, silica, titania or alumina-silica carrier.
面積を有する担体である特許請求の範囲第（１）項記載
の触媒。(4) The catalyst according to claim (1), wherein the inorganic fibrous carrier has a specific surface area of 10 m^2/g or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61044076A JPS62201648A (en) | 1986-03-03 | 1986-03-03 | Catalyst for decomposing ozone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61044076A JPS62201648A (en) | 1986-03-03 | 1986-03-03 | Catalyst for decomposing ozone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62201648A true JPS62201648A (en) | 1987-09-05 |
| JPH0443703B2 JPH0443703B2 (en) | 1992-07-17 |
Family
ID=12681531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61044076A Granted JPS62201648A (en) | 1986-03-03 | 1986-03-03 | Catalyst for decomposing ozone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201648A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618134A1 (en) * | 1987-07-14 | 1989-01-20 | Nikki Universal Co Ltd | CATALYST OF OZONE CRACKING |
| JPH01242126A (en) * | 1988-03-22 | 1989-09-27 | Ebara Infilco Co Ltd | Method and device for treating ozone |
| JPH02218437A (en) * | 1989-02-21 | 1990-08-31 | Sakai Chem Ind Co Ltd | Catalyst for ozone decomposition |
| JPH02222729A (en) * | 1989-02-22 | 1990-09-05 | Mitsubishi Kasei Corp | Catalyst for decomposition of ozone and production thereof |
| JPH03101069A (en) * | 1989-09-04 | 1991-04-25 | Matsushita Electric Ind Co Ltd | Catalyst plug for accumulator |
| JPH03143528A (en) * | 1990-10-17 | 1991-06-19 | Ebara Infilco Co Ltd | Treatment of ozone |
| FR2679791A1 (en) * | 1991-07-19 | 1993-02-05 | Nichias Corp | OZONE FILTER. |
| US5286700A (en) * | 1990-09-29 | 1994-02-15 | Nippon Shokubai Co., Ltd. | Catalyst and method of preparing the catalyst |
| US5462905A (en) * | 1992-08-21 | 1995-10-31 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst |
| US5472676A (en) * | 1989-05-11 | 1995-12-05 | Nippon Shokubai Co., Ltd. | Method of deodorizing a gas containing maloderous components |
| JPH08192054A (en) * | 1995-01-13 | 1996-07-30 | Showa Denko Kk | Ozone decomposition catalyst |
| EP0754493A2 (en) | 1995-07-21 | 1997-01-22 | Toyota Jidosha Kabushiki Kaisha | Catalyst for purifying exhaust gases and process for producing the same |
| JP2010048461A (en) * | 2008-08-21 | 2010-03-04 | Seibu Giken Co Ltd | Total enthalpy heat exchanger |
| US7875251B2 (en) | 2005-05-09 | 2011-01-25 | Toyo Boseki Kabushiki Kaisha | Ozone-decomposing agent |
| JP2016534861A (en) * | 2013-10-30 | 2016-11-10 | ビーエーエスエフ コーポレーション | Catalyst coating to prevent contamination |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50115187A (en) * | 1974-02-21 | 1975-09-09 | ||
| JPS5684634A (en) * | 1979-12-13 | 1981-07-10 | Paramaunto Glass Kogyo Kk | Ozone decomposing filter consisting of mat made of glass fiber and its production |
| JPS56161836A (en) * | 1980-05-16 | 1981-12-12 | Kyushu Refract Co Ltd | Catalyst for manufacture of synthetic natural gas and its manufacture |
| JPS60261547A (en) * | 1984-06-11 | 1985-12-24 | Shiki Roll Kk | Catalyst filter and its manufacture |
-
1986
- 1986-03-03 JP JP61044076A patent/JPS62201648A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50115187A (en) * | 1974-02-21 | 1975-09-09 | ||
| JPS5684634A (en) * | 1979-12-13 | 1981-07-10 | Paramaunto Glass Kogyo Kk | Ozone decomposing filter consisting of mat made of glass fiber and its production |
| JPS56161836A (en) * | 1980-05-16 | 1981-12-12 | Kyushu Refract Co Ltd | Catalyst for manufacture of synthetic natural gas and its manufacture |
| JPS60261547A (en) * | 1984-06-11 | 1985-12-24 | Shiki Roll Kk | Catalyst filter and its manufacture |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2618134A1 (en) * | 1987-07-14 | 1989-01-20 | Nikki Universal Co Ltd | CATALYST OF OZONE CRACKING |
| JPH01242126A (en) * | 1988-03-22 | 1989-09-27 | Ebara Infilco Co Ltd | Method and device for treating ozone |
| JPH0365213B2 (en) * | 1988-03-22 | 1991-10-11 | ||
| JPH02218437A (en) * | 1989-02-21 | 1990-08-31 | Sakai Chem Ind Co Ltd | Catalyst for ozone decomposition |
| JPH02222729A (en) * | 1989-02-22 | 1990-09-05 | Mitsubishi Kasei Corp | Catalyst for decomposition of ozone and production thereof |
| US5472676A (en) * | 1989-05-11 | 1995-12-05 | Nippon Shokubai Co., Ltd. | Method of deodorizing a gas containing maloderous components |
| JPH03101069A (en) * | 1989-09-04 | 1991-04-25 | Matsushita Electric Ind Co Ltd | Catalyst plug for accumulator |
| US5286700A (en) * | 1990-09-29 | 1994-02-15 | Nippon Shokubai Co., Ltd. | Catalyst and method of preparing the catalyst |
| JPH03143528A (en) * | 1990-10-17 | 1991-06-19 | Ebara Infilco Co Ltd | Treatment of ozone |
| FR2679791A1 (en) * | 1991-07-19 | 1993-02-05 | Nichias Corp | OZONE FILTER. |
| US5462905A (en) * | 1992-08-21 | 1995-10-31 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying catalyst |
| JPH08192054A (en) * | 1995-01-13 | 1996-07-30 | Showa Denko Kk | Ozone decomposition catalyst |
| EP0754493A2 (en) | 1995-07-21 | 1997-01-22 | Toyota Jidosha Kabushiki Kaisha | Catalyst for purifying exhaust gases and process for producing the same |
| US7875251B2 (en) | 2005-05-09 | 2011-01-25 | Toyo Boseki Kabushiki Kaisha | Ozone-decomposing agent |
| JP2010048461A (en) * | 2008-08-21 | 2010-03-04 | Seibu Giken Co Ltd | Total enthalpy heat exchanger |
| JP2016534861A (en) * | 2013-10-30 | 2016-11-10 | ビーエーエスエフ コーポレーション | Catalyst coating to prevent contamination |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0443703B2 (en) | 1992-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3326836B2 (en) | Catalyst body and method for producing catalyst body | |
| EP0306945B1 (en) | Oxidation of carbon monoxide and catalyst therefor | |
| AU698375B2 (en) | Catalyst with zirconia/ceria support | |
| US4343776A (en) | Ozone abatement catalyst having improved durability and low temperature performance | |
| JPS62201648A (en) | Catalyst for decomposing ozone | |
| US5585083A (en) | Catalytic process for formaldehyde oxidation | |
| US4405507A (en) | Ozone abatement catalyst having improved durability and low temperature performance | |
| EP0107465B1 (en) | Purification of gases | |
| JP3230427B2 (en) | Catalyst for purifying fumigation exhaust gas and method for purifying fumigation exhaust gas | |
| JP3688314B2 (en) | Ammonia decomposition method | |
| KR100506813B1 (en) | Mn oxide catalyst for decomposing ozone and the method therefor | |
| WO2000033955A1 (en) | Process for producing a catalyst composition | |
| JPH0947661A (en) | Process and catalyst for purifying exhaust gas | |
| JP2743437B2 (en) | Method for producing ozone decomposition catalyst | |
| JPS6297643A (en) | Ozone decomposing catalyst | |
| JP3604740B2 (en) | Ozone decomposition catalyst and ozone decomposition method | |
| JP3321423B2 (en) | Exhaust gas purification method | |
| JP2013208621A (en) | Carbon monoxide oxidation catalyst and method for producing the same | |
| JPH02307509A (en) | Ozone decomposer | |
| JPH10286432A (en) | Purifying method of harmful gas | |
| JP2007021482A (en) | Ammonia decomposition catalyst and ammonia treating method | |
| JPH0550340B2 (en) | ||
| JPH05329334A (en) | Catalyst for purifying exhaust gas and method for purifying exhaust gas | |
| JPH057776A (en) | Catalyst and its manufacture | |
| JPH02298317A (en) | Decomposing method for ozone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |