JP2002001117A - Method for manufacturing catalyst for decomposition of organic halogen compound and method for manufacturing filter for decomposition of organic halogen compound - Google Patents
Method for manufacturing catalyst for decomposition of organic halogen compound and method for manufacturing filter for decomposition of organic halogen compoundInfo
- Publication number
- JP2002001117A JP2002001117A JP2001112150A JP2001112150A JP2002001117A JP 2002001117 A JP2002001117 A JP 2002001117A JP 2001112150 A JP2001112150 A JP 2001112150A JP 2001112150 A JP2001112150 A JP 2001112150A JP 2002001117 A JP2002001117 A JP 2002001117A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- organic
- organic halogen
- decomposition
- halogen compound
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 72
- 150000002896 organic halogen compounds Chemical group 0.000 title claims abstract description 55
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000002243 precursor Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000010419 fine particle Substances 0.000 claims abstract description 12
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 10
- 150000004703 alkoxides Chemical class 0.000 claims abstract description 8
- 150000001413 amino acids Chemical class 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 12
- 125000002524 organometallic group Chemical group 0.000 claims description 12
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 150000002013 dioxins Chemical class 0.000 abstract description 31
- 239000010936 titanium Substances 0.000 abstract description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 16
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 3
- 238000007796 conventional method Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 51
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 39
- 241000264877 Hippospongia communis Species 0.000 description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 238000006864 oxidative decomposition reaction Methods 0.000 description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 6
- IBSQPLPBRSHTTG-UHFFFAOYSA-N 1-chloro-2-methylbenzene Chemical compound CC1=CC=CC=C1Cl IBSQPLPBRSHTTG-UHFFFAOYSA-N 0.000 description 6
- 229940024606 amino acid Drugs 0.000 description 6
- 235000001014 amino acid Nutrition 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- QSSXJPIWXQTSIX-UHFFFAOYSA-N 1-bromo-2-methylbenzene Chemical compound CC1=CC=CC=C1Br QSSXJPIWXQTSIX-UHFFFAOYSA-N 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 150000004045 organic chlorine compounds Chemical class 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ONIBWKKTOPOVIA-BYPYZUCNSA-N L-Proline Chemical compound OC(=O)[C@@H]1CCCN1 ONIBWKKTOPOVIA-BYPYZUCNSA-N 0.000 description 2
- 229930182821 L-proline Natural products 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 229960002429 proline Drugs 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011882 ultra-fine particle Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical group OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 125000005595 acetylacetonate group Chemical group 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- -1 bromine compound Chemical class 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000004687 hexahydrates Chemical class 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 150000005526 organic bromine compounds Chemical class 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- WPLOVIFNBMNBPD-ATHMIXSHSA-N subtilin Chemical compound CC1SCC(NC2=O)C(=O)NC(CC(N)=O)C(=O)NC(C(=O)NC(CCCCN)C(=O)NC(C(C)CC)C(=O)NC(=C)C(=O)NC(CCCCN)C(O)=O)CSC(C)C2NC(=O)C(CC(C)C)NC(=O)C1NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C1NC(=O)C(=C/C)/NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C2NC(=O)CNC(=O)C3CCCN3C(=O)C(NC(=O)C3NC(=O)C(CC(C)C)NC(=O)C(=C)NC(=O)C(CCC(O)=O)NC(=O)C(NC(=O)C(CCCCN)NC(=O)C(N)CC=4C5=CC=CC=C5NC=4)CSC3)C(C)SC2)C(C)C)C(C)SC1)CC1=CC=CC=C1 WPLOVIFNBMNBPD-ATHMIXSHSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- FBEIPJNQGITEBL-UHFFFAOYSA-J tetrachloroplatinum Chemical compound Cl[Pt](Cl)(Cl)Cl FBEIPJNQGITEBL-UHFFFAOYSA-J 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として焼却炉の
排ガス処理に使用される有機ハロゲン化合物分解触媒の
製造方法および有機ハロゲン化合物分解フィルターの製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an organic halogen compound decomposing catalyst and a method for producing an organic halogen compound decomposing filter mainly used for treating exhaust gas from an incinerator.
【０００２】[0002]
【従来の技術】都市ごみ焼却炉から発生する有機ハロゲ
ン化合物の低減対策には、燃焼条件の改善と排ガス処理
の高度化とがある。一般に有機ハロゲン化合物のような
ハロゲン化した有機物質の完全酸化分解を燃焼プロセス
で行うには、1000℃以上の高温維持が必要であるが、炉
壁の損傷を避けるために燃焼温度は800 〜900 ℃とされ
るのが普通であり、燃焼条件の改善によって有機塩素化
合物に代表される有機ハロゲン化合物の完全酸化分解を
行うことは容易ではない。2. Description of the Related Art Measures to reduce organic halogen compounds generated from municipal solid waste incinerators include improving combustion conditions and upgrading exhaust gas treatment. Generally, to perform complete oxidative decomposition of halogenated organic substances such as organic halogen compounds by a combustion process, it is necessary to maintain a high temperature of 1000 ° C. or higher, but the combustion temperature is 800 to 900 to avoid damage to the furnace wall. The temperature is usually set to ° C, and it is not easy to completely oxidize and decompose an organic halogen compound represented by an organic chlorine compound by improving the combustion conditions.
【０００３】また、炉内に局所的な低温部すなわち不完
全燃焼部が発生し易いストーカ炉では、有機ハロゲン化
合物の完全酸化分解のためには再燃焼部を設ける必要が
あるが、排ガス総量の増加や再燃焼用の燃料によるラン
ニングコストの増加という問題がある。In a stoker furnace in which a local low-temperature portion, that is, an incomplete combustion portion is easily generated in the furnace, a reburning portion must be provided for complete oxidative decomposition of an organic halogen compound. There is a problem that the running cost increases due to the increase and the fuel for reburning.
【０００４】さらに、有機ハロゲン化合物の中でも、ダ
イオキシン類、および臭素化ダイオキシン類は燃焼過程
で生成するのみならず、熱分解せずに残留した未燃焼分
や、ベンゼン環を持った前駆物質から300 〜500 ℃前後
の広い温度域で再合成されることが知られている。従っ
て、燃焼プロセスにおいてダイオキシン類および臭素化
ダイオキシン類の低減を図っても、その後の段階で再合
成され、排ガス中のダイオキシン類および臭素化ダイオ
キシン類が低減しない場合がある。以上の理由により、
ダイオキシン類および臭素化ダイオキシン類をはじめと
する排ガス中の有機ハロゲン化合物を安定的に低濃度に
維持するためには、排ガス処理による除去処理が必要と
なっている。[0004] Among the organic halogen compounds, dioxins and brominated dioxins are formed not only in the combustion process but also in the unburned portion remaining without being thermally decomposed and the precursor having a benzene ring. It is known that it is resynthesized in a wide temperature range of about 500 ° C. Therefore, even if the dioxins and brominated dioxins are reduced in the combustion process, the dioxins and brominated dioxins in the exhaust gas may not be reduced in a later stage because they are resynthesized. For the above reasons,
In order to stably maintain low concentrations of organic halogen compounds in exhaust gas such as dioxins and brominated dioxins, removal treatment by exhaust gas treatment is required.
【０００５】排ガス処理によるダイオキシン類および臭
素化ダイオキシン類をはじめとした有機ハロゲン化合物
の除去処理法としては、活性炭により吸着させる吸着法
と、触媒により分解させる触媒分解法があげられる。吸
着法は現在の有機ハロゲン化合物処理の主流を占めてい
るが、コスト高であるうえダイオキシン類を吸着した活
性炭が二次廃棄物となり、その後の処理が課題となって
いる。また触媒分解法は二次廃棄物が発生しない利点が
あるが、触媒による副反応によりダイオキシン類等が再
合成されるという問題と、触媒が劣化するという問題が
ある。As a method for removing organic halogen compounds such as dioxins and brominated dioxins by exhaust gas treatment, there are an adsorption method in which activated carbon is adsorbed and a catalytic decomposition method in which a catalyst is decomposed. Although the adsorption method occupies the mainstream of organic halogen compound treatment at present, the cost is high and activated carbon having adsorbed dioxins becomes secondary waste, and the subsequent treatment is an issue. Although the catalytic decomposition method has an advantage that secondary waste is not generated, it has a problem that dioxins and the like are resynthesized by a side reaction by the catalyst and a problem that the catalyst is deteriorated.
【０００６】従来から、有機塩素化合物分解触媒として
は、V２O５-TiO２系やV ２O５ -WO３ -TiO２系の脱硝触媒
が用いられているが、特に触媒入口のダイオキシン類濃
度が低い場合には、逆にダイオキシン類を生成してしま
うことが確認されている。近年では住民協定等により排
ガス中のダイオキシン類濃度が政府基準値の1/10以下に
抑えられているところも少なくなく、触媒によるダイオ
キシン類の再合成が問題となる。またこのような従来の
触媒は、200 〜500 ℃の高温で使用する必要があるた
め、排ガスの再加熱を必要とするという問題もある。Conventionally, as a catalyst for decomposing an organic chlorine compound,
Is V2O5-TiO2System and V 2O5 -WO3 -TiO2Denitration catalyst
Is used, especially dioxin concentration at the catalyst inlet.
If the temperature is low, dioxins will be produced.
Have been confirmed. In recent years, due to resident agreements, etc.
Dioxin concentration in gas is less than 1/10 of government standard value
There are many places where it is suppressed,
The resynthesis of toxins is problematic. In addition, such conventional
The catalyst must be used at high temperatures of 200-500 ° C.
Therefore, there is also a problem that the exhaust gas needs to be reheated.
【０００７】また近年、ダイオキシン類と同様に、廃棄
物の焼却工程もしくは排ガス処理工程で生じる臭素化ダ
イオキシン類の人の健康に対する影響の程度、その発生
過程等に関する調査研究が活発化している。[0007] In recent years, similarly to dioxins, research on the degree of the effect of brominated dioxins on human health, the generation process thereof, and the like, which occur in the waste incineration step or exhaust gas treatment step, has been active.
【０００８】そこで本発明者等は、触媒によるダイオキ
シン類および臭素化ダイオキシン類の再合成現象を検討
した結果、その原因となるのはV２O５であり、Pt及び/
またはPdを用いれば再合成のおそれのないダイオキシン
類および臭素化ダイオキシン類をはじめとした有機ハロ
ゲン化合物分解触媒を得ることができることを確認し
た。Pt及び／またはPdを分散させたチタンを製造するた
めに考えられる普通の方法は、酸化チタン粉末またはそ
の焼結体に、Pt及び／またはPdの塩の水溶液をコーティ
ングまたは含浸させ、加熱分解してPt及び／またはPdを
析出させる方法である。The inventors of the present invention have studied the resynthesis of dioxins and brominated dioxins with a catalyst, and found that V 2 O 5 causes Pt and / or Pt and / or
Alternatively, it was confirmed that a catalyst for decomposing an organic halogen compound such as dioxins and brominated dioxins without fear of resynthesis can be obtained by using Pd. A common method considered to produce titanium with Pt and / or Pd dispersed therein is to coat or impregnate the titanium oxide powder or its sintered body with an aqueous solution of a salt of Pt and / or Pd, and thermally decompose. In this method, Pt and / or Pd is precipitated.
【０００９】しかしこの方法で得られた有機ハロゲン化
合物分解触媒は、析出するPt及び／またはPdの粒子径が
大きく、かつ酸化チタンの表面に均一に析出するため、
酸化チタンの粒子径が小さい場合には触媒効果が有効に
発揮されないという問題がある。また、高温に加熱され
たとき酸化チタン粒子の焼結と同時に酸化チタン及び貴
金属粒子の粒成長（シンタリング）を招くため、触媒活
性が低下するという問題がある。However, the organic halogen compound decomposition catalyst obtained by this method has a large Pt and / or Pd particle diameter and uniformly precipitates on the surface of titanium oxide.
When the particle diameter of titanium oxide is small, there is a problem that the catalytic effect is not effectively exhibited. Further, when heated to a high temperature, the sintering of the titanium oxide particles and the grain growth (sintering) of the titanium oxide and the noble metal particles are caused, so that there is a problem that the catalytic activity is reduced.
【００１０】[0010]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、Pt及び/またはPdの微粒子をチタン
粒子中に均一に分散させることにより活性点を増加させ
ることができ、またダイオキシン類および臭素化ダイオ
キシン類の再合成のおそれがなく、しかも触媒反応温度
を200 ℃以下に低下させても確実にダイオキシン類およ
び臭素化ダイオキシン類をはじめとした有機ハロゲン化
合物を酸化分解させることができる有機ハロゲン化合物
分解触媒の製造方法を提供することを目的としてなされ
たものである。また本発明の他の目的は、この有機ハロ
ゲン化合物分解触媒を利用した有機ハロゲン化合物分解
フィルターの製造方法を提供することである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can increase the number of active sites by uniformly dispersing Pt and / or Pd fine particles in titanium particles. There is no danger of resynthesizing dioxins and brominated dioxins, and it is possible to reliably decompose organic halogen compounds such as dioxins and brominated dioxins even if the catalyst reaction temperature is lowered to 200 ° C or less. An object of the present invention is to provide a method for producing a catalyst for decomposing an organic halogen compound which can be produced. It is another object of the present invention to provide a method for producing an organic halogen compound decomposition filter using the organic halogen compound decomposition catalyst.
【００１１】[0011]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の有機ハロゲン化合物分解触媒の製
造方法は、Pt及び／またはPdの塩と、Tiの有機化合物
と、有機結合体とを、溶媒中で反応させることによりPt
及び/またはPdとTiとを分子内に含む有機金属前駆体を
合成し、これを加熱してPt及び/またはPdの微粒子がTiO
２中に分散した有機ハロゲン化合物分解触媒を得ること
を特徴とするものである。Means for Solving the Problems To solve the above-mentioned problems, a method for producing an organic halogen compound decomposition catalyst according to the present invention comprises a Pt and / or Pd salt, an organic compound of Ti, and an organic compound. And Pt by reacting in a solvent.
And / or synthesize an organometallic precursor containing Pd and Ti in the molecule, and heat this to form Pt and / or Pd fine particles of TiO.
2. A catalyst for decomposing an organic halogen compound dispersed in the composition 2 .
【００１２】また本発明の有機ハロゲン化合物分解フィ
ルターの製造方法は、Pt及び／またはPdの塩と、Tiの有
機化合物と、有機結合体とを、溶媒中で反応させること
によりPt及び／またはPdとTiとを分子内に含む有機金属
前駆体を合成し、これをセラミックフィルターのクリー
ン側の表面に塗布、もしくは含浸によりフィルター内部
細孔壁面にコーティングして加熱し、Pt及び／またはPd
の微粒子がTiO２中に分散した有機ハロゲン化合物分解
触媒をセラミックフィルターに担持させることを特徴と
するものである。The method for producing an organic halogen compound decomposing filter of the present invention is characterized in that a salt of Pt and / or Pd, an organic compound of Ti, and an organic conjugate are reacted in a solvent to form Pt and / or Pd. Synthesizes an organometallic precursor containing Ti and Ti in the molecule, and coats it on the clean side of the ceramic filter, or coats it on the inner pore wall of the filter by impregnation and heats it to form Pt and / or Pd
Characterized in that an organic halogen compound decomposition catalyst having fine particles dispersed in TiO 2 is carried on a ceramic filter.
【００１３】本発明の方法により得られた有機ハロゲン
化合物分解触媒は、Pt及び／またはPdとTiとを分子内に
含む有機金属前駆体を加熱してPt及び／またはPdの微粒
子をTiO２中に分散させたものであるため、従来のコー
ティングまたは含浸法によって得られるものよりも活性
点が大幅に増加し、触媒を高活性化することができる。
従って高価なPtやPdの量を低減することができ、コスト
を削減できる。有機金属前駆体の加熱は、450℃〜500℃
の加熱温度で、空気雰囲気中で、通常大気圧下で行う。
加熱時間は、加熱温度等との関係で有機結合体が完全に
焼失し、かつPtまたはPｄとをTiO２中に均一に分散する
に十分な時間とする。また200 ℃未満の低温条件におい
ても有機ハロゲン化合物を分解することができるので、
排ガスを再加熱する必要がなく、有機ハロゲン化合物を
再合成することもない。なお、本発明で「PtまたはPd」
は「Pt及び／またはPd」を意味する。The catalyst for decomposing an organohalogen compound obtained by the method of the present invention comprises heating an organometallic precursor containing Pt and / or Pd and Ti in a molecule to convert Pt and / or Pd fine particles in TiO 2 . The active sites are greatly increased as compared with those obtained by a conventional coating or impregnation method, and the catalyst can be highly activated.
Therefore, the amount of expensive Pt or Pd can be reduced, and the cost can be reduced. Heating the organometallic precursor is 450 ° C to 500 ° C
The heating is performed in an air atmosphere, usually under the atmospheric pressure.
The heating time is set to a time sufficient to completely burn off the organic binder in relation to the heating temperature and the like and to uniformly disperse Pt or Pd in TiO 2 . In addition, the organic halogen compound can be decomposed even under a low temperature condition of less than 200 ° C.,
There is no need to reheat the exhaust gas and no re-synthesis of the organic halogen compound. In the present invention, "Pt or Pd"
Means “Pt and / or Pd”.
【００１４】また本発明の方法により得られた有機ハロ
ゲン化合物分解フィルターは、このような作用を持つ有
機ハロゲン化合物分解触媒をセラミックフィルターのク
リーン側の表面、もしくはフィルターのろ過壁面内部に
担持させたものであるから、ダストの除去と同時に有機
ハロゲン化合物の分解も行える利点がある。The organic halogen compound decomposing filter obtained by the method of the present invention has an organic halogen compound decomposing catalyst having such an action carried on a clean side surface of a ceramic filter or inside a filter wall. Therefore, there is an advantage that the organic halogen compound can be decomposed simultaneously with the removal of dust.
【００１５】[0015]
【発明の実施の形態】以下に各発明の好ましい実施形態
を示す。先ず、Tiの有機化合物と、Pt及び／またはPdの
可溶性の塩とを、有機結合体を含む溶媒に溶解させる。
Tiの有機化合物としては、Tiのアルコキシド誘導体（例
えばTiのアルコキシドの一部をアセチルアセトナート基
で置換した誘導体や、トリエタノールアミナト基で置換
した誘導体）を用いることができ、Ptの可溶性塩として
は、塩化白金酸、塩化白金酸六水和物、二塩化白金、四
塩化白金等を用いることができ、Pdの可溶性塩として
は、塩化パラジウム、硝酸パラジウム等を用いることが
できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of each invention will be described below. First, an organic compound of Ti and a soluble salt of Pt and / or Pd are dissolved in a solvent containing an organic conjugate.
As the organic compound of Ti, an alkoxide derivative of Ti (for example, a derivative in which a part of the alkoxide of Ti is substituted with an acetylacetonate group or a derivative in which a triethanolamine group is substituted) can be used, and a soluble salt of Pt can be used. Examples thereof include chloroplatinic acid, chloroplatinic acid hexahydrate, platinum dichloride, platinum tetrachloride, and the like, and soluble salts of Pd include palladium chloride, palladium nitrate, and the like.
【００１６】本発明ではTiと貴金属に対する有機結合体
として、ＬリシンまたはＬグリシン、Ｌプロリン等のア
ミノ酸を使用することができる。特にＬプロリンは溶媒
として使用されるメタノールに対する溶解性が高いので
好ましい。この有機結合体によりTiイオンとPt及び/ま
たはPdのイオンが結合され、分子内に固定される。また
Tiの有機化合物として、Tiのアルコキシド誘導体を使用
することが好ましい。「有機結合体」とは、Tiイオンと
Pt及び／またはPdイオンとを有機結合体分子とを結合
し、分子内に固定し、加熱することによって除去され、
TiO２とPt及び/またはPdの微粒子結合体を生じさせる物
質であって、得られる有機ハロゲン化合物分解触媒の物
性に触媒毒等の悪影響を与えない物質をいう。In the present invention, amino acids such as L-lysine, L-glycine, and L-proline can be used as an organic conjugate for Ti and a noble metal. In particular, L-proline is preferable because of its high solubility in methanol used as a solvent. The Ti ion and the Pt and / or Pd ions are bound by this organic conjugate, and are fixed in the molecule. Also
It is preferable to use an alkoxide derivative of Ti as the organic compound of Ti. "Organic conjugate" refers to Ti ion
Pt and / or Pd ions are combined with the organic conjugate molecule, fixed in the molecule and removed by heating,
A substance that forms a fine particle combination of TiO 2 and Pt and / or Pd and does not adversely affect the physical properties of the resulting organic halogen compound decomposition catalyst, such as catalyst poisons.
【００１７】上記の各成分の好ましい混合比率は、Ti
有機化合物（例えば、Tiのアルコキシド誘導体）100 重
量部に対して、Pt及び／またはPdの塩 0.5部〜 5重量
部、メタノール 100部〜200 部、アミノ酸 0.1部〜1.5
部である。これらを70℃〜80℃で反応させると各成分が
分子レベルで均等に分散した有機金属前駆体が得られ
る。ここで有機金属前駆体とは、TiイオンとPt及び／ま
たはPdのイオンとが一つの分子内に化学結合を介して繋
がっているものを意味し、溶媒に溶解している状態とは
異なり、各イオンの相対的な位置関係が定まったもので
ある。この状態ではTiとPt及び／またはPdはアミノ酸を
介して結合しているが、450℃〜500℃に加熱すると有機
結合体であるアミノ酸が焼失して有機金属前駆体は分解
され、Pt及び／またはPdが超微細粒子化してTi が酸化
されたTiO２中に高分散され、TiO２の100重量部に対し
てPt及び／またはPdが1〜10重量部程度の有機ハロゲン
化合物分解触媒を得ることができる。The preferred mixing ratio of the above components is Ti
For 100 parts by weight of an organic compound (for example, an alkoxide derivative of Ti), 0.5 to 5 parts by weight of a salt of Pt and / or Pd, 100 to 200 parts of methanol, 0.1 to 1.5 parts of amino acid
Department. When these are reacted at 70 ° C. to 80 ° C., an organometallic precursor in which each component is uniformly dispersed at a molecular level is obtained. Here, the organometallic precursor means one in which Ti ions and Pt and / or Pd ions are connected via a chemical bond in one molecule, and is different from a state in which the ions are dissolved in a solvent, The relative positional relationship of each ion is determined. In this state, Ti and Pt and / or Pd are bonded via an amino acid, but when heated to 450 ° C. to 500 ° C., the amino acid which is an organic conjugate is burned off and the organometallic precursor is decomposed, and Pt and / or Pd are decomposed. or Pd is Ti and ultrafine fine particles are highly dispersed in the TiO 2, which is oxidized, Pt and / or Pd to obtain the organic halogen compound-decomposing catalyst of about 1 to 10 parts by weight per 100 parts by weight of TiO 2 be able to.
【００１８】この有機ハロゲン化合物分解触媒はPt及び
／またはPdの超微細粒子化により活性点が増大している
ために触媒活性が向上している。このためPt及び/また
はPdの使用量を従来よりも削減でき、低コスト化を図る
ことができる。さらに200 ℃未満の低温においても有機
ハロゲン化合物を分解することができる性能を持つの
で、排ガスを再加熱する必要もなくなる等の多くの利点
を持つ。この触媒のダイオキシン類の分解効率は、後記
の実施例に記載したように、酸化チタン粉末にPt及び／
またはPdの塩の水溶液をコーティングし、加熱分解して
Pt及び/またはPdを析出させる方法により得られる触媒
よりもはるかに高くなる。This organic halogen compound decomposition catalyst has an increased active site due to ultrafine particles of Pt and / or Pd, so that the catalytic activity is improved. For this reason, the amount of Pt and / or Pd used can be reduced more than before, and cost reduction can be achieved. Further, since it has a performance of decomposing organic halogen compounds even at a low temperature of less than 200 ° C., it has many advantages such as eliminating the need to reheat exhaust gas. As described in Examples below, the decomposition efficiency of dioxins of this catalyst was determined by adding Pt and / or
Or coat with an aqueous solution of Pd salt and heat decompose
It is much higher than the catalyst obtained by the method of depositing Pt and / or Pd.
【００１９】なお請求項２の発明では、上記の有機金属
前駆体をそのまま加熱するのではなく、糊として作用す
るTiO２ゾルと混合して触媒コート溶液とし、多孔質の
セラミックフィルターのクリーン側の表面に塗布して加
熱する。この結果、Pt及び/またはPdが超微細粒子化し
てTiO２中に高分散された有機ハロゲン化合物分解触媒
を、セラミックフィルターのクリーン側に担持させるこ
とができる。またこの触媒コート溶液にセラミックフィ
ルターを含浸させ加熱することでフィルター内部細孔壁
面にコーティングすることができる。According to the second aspect of the present invention, the organometallic precursor is not heated as it is, but is mixed with a TiO 2 sol acting as a paste to form a catalyst coating solution, and the porous ceramic filter is cleaned on the clean side. Apply to surface and heat. As a result, an organic halogen compound decomposition catalyst in which Pt and / or Pd is converted into ultrafine particles and highly dispersed in TiO 2 can be supported on the clean side of the ceramic filter. The catalyst coating solution can be impregnated with a ceramic filter and heated to coat the pore walls inside the filter.
【００２０】このセラミックフィルターを排ガス処理に
使用すれば、ダスト分をセラミックフィルターでろ過す
ることができるとともに、有機ハロゲン化合物分解触媒
によって排ガス中の有機ハロゲン化合物も同時に分解処
理することができる。また有機ハロゲン化合物分解触媒
はクリーン側もしくはフィルター内部細孔壁面に担持さ
れているため、排ガス中に含まれるダストによって触媒
が劣化することも防止できる。さらに排ガス中の有機ハ
ロゲン化合物は、触媒を含むフィルター壁通過時に分解
されるが、フィルター壁中の細孔を通過する時に排ガス
流速が増大し、拡散効果により通常のフィルター機能を
持たないハニカム、ペレット形状等の触媒よりも分解が
促進される。If this ceramic filter is used for exhaust gas treatment, dust can be filtered by the ceramic filter, and the organic halogen compound in the exhaust gas can be simultaneously decomposed by the organic halogen compound decomposition catalyst. In addition, since the organic halogen compound decomposition catalyst is supported on the clean side or on the pore wall surface inside the filter, it is possible to prevent the catalyst from being deteriorated by dust contained in the exhaust gas. Furthermore, the organic halogen compounds in the exhaust gas are decomposed when passing through the filter wall containing the catalyst, but the exhaust gas flow rate increases when passing through the pores in the filter wall, and the honeycomb and pellets that do not have a normal filter function due to the diffusion effect Decomposition is promoted more than a catalyst such as a shape.
【００２１】このほか、有機金属前駆体の触媒コート溶
液を活性炭吸着剤にコーティングまたは含浸させ、有機
ハロゲン化合物分解触媒を活性炭吸着剤に担持させるこ
ともできる。活性炭吸着剤は130 〜150 ℃が使用温度限
界であるが、本発明による有機ハロゲン化合物分解触媒
はこのような低温度域においても十分なダイオキシン類
分解効果を発揮する。このためこの活性炭吸着剤を排ガ
ス処理に用いれば、有機ハロゲン化合物を活性炭吸着剤
が吸着するとともに触媒による酸化分解も可能となり、
有機ハロゲン化合物の分解の他に重金属やSO２,HCl等の
吸着除去も可能となる。In addition, the activated carbon adsorbent may be coated or impregnated with a catalyst coating solution of the organometallic precursor, and the organic halogen compound decomposition catalyst may be supported on the activated carbon adsorbent. The operating temperature limit of the activated carbon adsorbent is 130 to 150 ° C., but the catalyst for decomposing an organic halogen compound according to the present invention exhibits a sufficient dioxin decomposition effect even in such a low temperature range. Therefore, if this activated carbon adsorbent is used for exhaust gas treatment, the activated carbon adsorbent adsorbs the organic halogen compound and oxidative decomposition by a catalyst becomes possible.
In addition to decomposition of the organic halogen compound, adsorption and removal of heavy metals, SO 2 , HCl and the like can be performed.
【００２２】[0022]
【実施例】（実施例１）上記した本発明の効果を確認す
るため、触媒工学においてダイオキシン類の代替物質と
されているオルトクロロトルエンを用い、その酸化分解
率を測定した。実験に用いたのは、Tiのアルコキシド誘
導体100 重量部にPtを１重量部の比率で混合し、アミノ
酸を含むメタノールに溶解させた前駆体溶液を、セラミ
ックハニカムフィルターの表面にハニカム容積１リット
ル当たりPtが１ｇとなるように含浸させ、加熱して有機
ハロゲン化合物分解触媒を生成させたものである。また
比較のために、比表面積が70m2/gの酸化チタン粉末をPt
で覆った従来型のダイオキシン類分解触媒を、同様にハ
ニカム容積１リットル当たりPtが１ｇとなるように含浸
させ加熱したものを作成した。EXAMPLES (Example 1) In order to confirm the effects of the present invention described above, the oxidative decomposition rate of orthochlorotoluene, which is a substitute for dioxins in catalyst engineering, was measured. In the experiment, a precursor solution prepared by mixing 100 parts by weight of Pt alkoxide derivative with 1 part by weight of Pt and dissolving in methanol containing amino acid was applied to the surface of the ceramic honeycomb filter per 1 liter of honeycomb volume. It is impregnated so that Pt becomes 1 g, and heated to generate an organic halogen compound decomposition catalyst. For comparison, titanium oxide powder having a specific surface area of 70 m 2 / g
A conventional dioxin decomposition catalyst covered with the above was impregnated and heated so that Pt was 1 g per 1 liter of honeycomb volume.
【００２３】これらの２種類のハニカムを装置内にセッ
トし、ＳＶが8000ｈ−１、温度が190 ℃の条件となるよ
うオルトクロロトルエン及びCOを含む排ガスを流し、そ
れらの分解率を測定した。その結果、本発明による前駆
体溶液から生成された触媒と比較例の触媒は、ともにCO
を98％程度分解することができ、COの酸化分解率に付い
ては顕著な差異は認められなかった。しかし、ダイオキ
シン類の代替物質であるオルトクロロトルエンの酸化分
解率は、本発明による触媒では75％を越えたが、比較例
の触媒では50％程度であり、200 ℃未満の低温度域にお
ける本発明の優位性を確認できた。These two kinds of honeycombs were set in an apparatus, and an exhaust gas containing orthochlorotoluene and CO was flowed so that the SV was 8000 h -1 and the temperature was 190 ° C., and their decomposition rates were measured. As a result, both the catalyst produced from the precursor solution according to the present invention and the catalyst of the comparative
Was decomposed by about 98%, and no remarkable difference was observed in the oxidative decomposition rate of CO. However, the oxidative decomposition rate of orthochlorotoluene, which is a substitute for dioxins, exceeded 75% for the catalyst of the present invention, but was about 50% for the catalyst of the comparative example, indicating that the oxidative decomposition rate was lower than 200 ° C. The superiority of the invention was confirmed.
【００２４】（実施例２）上記示した実施例ではダイオ
キシン類をはじめとした有機塩素化合物を念頭においた
実施例であるのに対し別の有機ハロゲン化合物である臭
素化ダイオキシン類をはじめとした有機臭素化合物を念
頭に置いて、オルトブロモトルエンを用い、その酸化分
解率を測定した。実験に用いたのは、Tiのアルコキシド
誘導体100 重量部にPtを１重量部の比率で混合し、アミ
ノ酸を含むメタノールに溶解させた前駆体溶液を、セラ
ミックハニカムフィルターの表面にハニカム容積１リッ
トル当たりPtが１ｇとなるように含浸させ、加熱して有
機ハロゲン化合物分解触媒を生成させたものである。ま
た比較のために、比表面積が70m2/gの酸化チタン粉末を
Ptで覆った従来型のダイオキシン類分解触媒を、同様に
ハニカム容積１リットル当たりPtが１ｇとなるように含
浸させ加熱したものを作成した。Embodiment 2 In the above embodiment, an organic chlorine compound such as dioxins is taken into consideration. On the other hand, another organic halogen compound such as brominated dioxins is used. With the bromine compound in mind, the oxidative degradation rate was measured using orthobromotoluene. In the experiment, a precursor solution prepared by mixing 100 parts by weight of Pt alkoxide derivative with 1 part by weight of Pt and dissolving in methanol containing amino acid was applied to the surface of the ceramic honeycomb filter per 1 liter of honeycomb volume. It is impregnated so that Pt becomes 1 g, and heated to generate an organic halogen compound decomposition catalyst. For comparison, titanium oxide powder having a specific surface area of 70 m 2 / g was used.
A conventional dioxin decomposition catalyst covered with Pt was similarly impregnated and heated so that Pt was 1 g per liter of honeycomb volume to prepare a catalyst.
【００２５】これらの２種類のハニカムを装置内にセッ
トし、ＳＶが8000ｈ−１、温度が190 ℃の条件となるよ
うオルトブロモトルエン及びCOを含む排ガスを流し、そ
れらの分解率を測定した。その結果、本発明による前駆
体溶液から生成された触媒と比較例の触媒は、ともにCO
を98％程度分解することができ、COの酸化分解率に付い
ては顕著な差異は認められなかった。しかし、有機臭素
化合物であるオルトブロモトルエンの酸化分解率は、本
発明による触媒では70％を越えたが、比較例の触媒では
40％程度であり、200 ℃未満の低温度域における本発明
の優位性を確認できた。These two kinds of honeycombs were set in an apparatus, and an exhaust gas containing orthobromotoluene and CO was flowed so that the SV was 8000 h -1 and the temperature was 190 ° C., and the decomposition rate thereof was measured. As a result, both the catalyst produced from the precursor solution according to the present invention and the catalyst of the comparative
Was decomposed by about 98%, and no remarkable difference was observed in the oxidative decomposition rate of CO. However, the rate of oxidative decomposition of orthobromotoluene, which is an organic bromine compound, exceeded 70% in the catalyst of the present invention, but in the catalyst of the comparative example.
This is about 40%, which confirms the superiority of the present invention in a low temperature range of less than 200 ° C.
【００２６】（実施例３）Ptの担持量を変更し、ハニカ
ム触媒部分温度を190℃とした以外は、実施例１と同様
に実験を行った。即ち、Ptを0.25、0.5，1，5，10g/ハ
ニカム１リットル、TiO２を100g/ハニカム１リットル混
合した。結果を図１に示す。同図から、1〜10ｇ/ハニカ
ム１リットルでは、殆どオルトクロロトルエン除去率に
変わりが無かった。但し、貴金属は高価であるので、コ
スト面から１g/ハニカム１リットル以下であることが好
ましい。Example 3 An experiment was conducted in the same manner as in Example 1 except that the amount of Pt supported was changed and the temperature of the honeycomb catalyst was set to 190 ° C. That is, 0.25, 0.5, 1, 5 , 10 g of Pt was mixed with 1 liter of honeycomb, and 100 g of TiO2 was mixed with 1 liter of honeycomb. The results are shown in FIG. From the figure, it was found that there was almost no change in the removal rate of orthochlorotoluene at 1 to 10 g / l liter of honeycomb. However, since the noble metal is expensive, it is preferable that the amount is 1 g / honeycomb 1 liter or less in terms of cost.
【００２７】（実施例４）実施例１の試験方法におい
て、ＳＶ8000ｈ−１、200℃とし、Pt、Pdを１g/ハニカ
ム１リットル、TiO２を100g/ハニカム１リットル混合し
た場合について、実施例１の方法および従来の方法（比
表面積が70m2/gの酸化チタン粉末をPtで覆った従来型の
ダイオキシン類分解触媒を、同様にハニカム容積１リッ
トル当たりPt、Pdが１ｇとなるように含浸させ加熱した
もの）で、C０分解率、オルトクロロトルエン分解率（O
−CT分解率）およびオルトクロロトルエンに代えてオル
トブロモトルエンを用いた場合のオルトブロモトルエン
の分解率（O-BT分解率）を測定した。結果を図２に示
す。本発明の方法は、従来法に比較してCO分解率、O−C
T分解率、O−BT分解率が共に非常に優れ、また、Pdにつ
いては、Pｔと同様の試験結果が得られたことを確認し
た。[0027] In the method of Test Example 4 Example 1, SV8000h -1, and 200 ° C., Pt, Pd and 1 g / honeycomb 1 liter case where the TiO 2 were mixed 100 g / honeycomb 1 liter Example 1 And a conventional method (a conventional dioxin decomposition catalyst in which titanium oxide powder having a specific surface area of 70 m 2 / g is covered with Pt is similarly impregnated so that Pt and Pd become 1 g per liter of honeycomb volume. Heated), C0 decomposition rate, orthochlorotoluene decomposition rate (O
-CT decomposition rate) and the decomposition rate of orthobromotoluene (O-BT decomposition rate) when orthobromotoluene was used instead of orthochlorotoluene were measured. The results are shown in FIG. The method of the present invention has a CO decomposition rate, O-C
It was confirmed that both the T decomposition rate and the O-BT decomposition rate were extremely excellent, and that Pd had the same test results as Pt.
【００２８】[0028]
【発明の効果】以上に説明したように、請求項１の発明
によれば、有機金属前駆体を利用してPt及び/またはPd
の微粒子をチタニア粒子中に均一に分散させ活性点を増
加させた有機ハロゲン化合物分解触媒を得ることができ
る。この触媒は、触媒反応温度を200 ℃以下に低下させ
ても確実に有機ハロゲン化合物を酸化分解させることが
できるから、従来のように排ガスを再加熱する必要がな
い。しかも従来のV２O５-TiO２系やV２O５-WO３-TiO２
系の脱硝触媒とは異なり、入口濃度が低い場合にもダ
イオキシン類を触媒が再合成するおそれがない。また請
求項２の発明によれば、Pt及び/またはPdの微粒子がTi
中に分散した有機ハロゲン化合物分解触媒をセラミック
フィルターに担持させることにより、ダスト除去と有機
ハロゲン化合物の分解とを同時に行えるセラミックフィ
ルターを得ることができる。As described above, according to the first aspect of the present invention, Pt and / or Pd is produced using an organometallic precursor.
The fine particles of the above can be uniformly dispersed in the titania particles to obtain an organic halogen compound decomposition catalyst having an increased active site. This catalyst can reliably oxidize and decompose organic halogen compounds even when the catalyst reaction temperature is lowered to 200 ° C. or lower, so that there is no need to reheat exhaust gas as in the prior art. In addition, conventional V 2 O 5 -TiO 2 and V 2 O 5 -WO 3 -TiO 2
Unlike a system-based denitration catalyst, there is no possibility that the catalyst will resynthesize dioxins even when the inlet concentration is low. According to the invention of claim 2, the fine particles of Pt and / or Pd are Ti
By supporting the organic halogen compound decomposition catalyst dispersed therein on the ceramic filter, a ceramic filter capable of simultaneously removing dust and decomposing the organic halogen compound can be obtained.
【図１】実施例３の実験結果を示すグラフである。FIG. 1 is a graph showing experimental results of Example 3.
【図２】実施例４の実験結果を示すグラフである。FIG. 2 is a graph showing experimental results of Example 4.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０１Ｊ 37/00 Ｂ０１Ｄ 53/36 ＺＡＢ Ｆターム(参考） 4D019 AA01 BA05 BB06 BC07 CA01 4D048 AA11 AB01 AB03 BA07X BA30X BA31X BA41X BB02 CC41 4G069 AA03 AA08 BA04A BA04B BA21C BC50C BC72A BC72B BC75A BC75B BE08C BE13 CA02 CA10 CA19 DA06 EA19 EB19 FA01 FB14 FB34 FC02 FC04 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) B01J 37/00 B01D 53/36 ZAB F-term (Reference) 4D019 AA01 BA05 BB06 BC07 CA01 4D048 AA11 AB01 AB03 BA07X BA30X BA31X BA41X BB02 CC41 4G069 AA03 AA08 BA04A BA04B BA21C BC50C BC72A BC72B BC75A BC75B BE08C BE13 CA02 CA10 CA19 DA06 EA19 EB19 FA01 FB14 FB34 FC02 FC04
Claims (4)
と、有機結合体とを、溶媒中で反応させることによりPt
及び/またはPdとTiとを分子内に含む有機金属前駆体を
合成し、これを加熱してPt及び/またはPdの微粒子がTiO
２中に分散した有機ハロゲン化合物分解触媒を得ること
を特徴とする有機ハロゲン化合物分解触媒の製造方法。1. A method comprising reacting a salt of Pt and / or Pd with an organic compound of Ti and an organic conjugate in a solvent to obtain Pt.
And / or synthesize an organometallic precursor containing Pd and Ti in the molecule, and heat this to form Pt and / or Pd fine particles of TiO.
2. A method for producing an organic halogen compound decomposition catalyst, comprising obtaining an organic halogen compound decomposition catalyst dispersed in 2 .
求項１記載の有機ハロゲン化合物分解触媒の製造方法。2. The method for producing an organic halogen compound decomposition catalyst according to claim 1, wherein an amino acid is used as the organic conjugate.
誘導体を使用する請求項１記載の有機ハロゲン化合物分
解触媒の製造方法。3. The method for producing an organohalogen compound decomposition catalyst according to claim 1, wherein an alkoxide derivative of Ti is used as the organic compound of Ti.
と、有機結合体とを、溶媒中で反応させることによりPt
及び/またはPdとTiとを分子内に含む有機金属前駆体を
合成し、これをセラミックフィルターのクリーン側の表
面に塗布、もしくは含浸により内部細孔壁面にコーティ
ングして加熱し、Pt及び/またはPdの微粒子がTiO２中に
分散した有機ハロゲン化合物分解触媒をセラミックフィ
ルターに担持させることを特徴とする有機ハロゲン化合
物分解フィルターの製造方法。4. The reaction of a salt of Pt and / or Pd, an organic compound of Ti, and an organic conjugate in a solvent to form Pt
And / or synthesize an organometallic precursor containing Pd and Ti in the molecule, apply this to the clean side surface of the ceramic filter, or coat the inner pore wall surface by impregnation and heat it, Pt and / or A method for producing an organic halogen compound decomposing filter, comprising supporting a ceramic filter with an organic halogen compound decomposing catalyst in which Pd fine particles are dispersed in TiO 2 .
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| JP2001112150A JP4508459B2 (en) | 2000-04-20 | 2001-04-11 | Method for producing organohalogen compound decomposition catalyst and method for producing organohalogen compound decomposition filter |
| TW90108822A TW470662B (en) | 2000-04-20 | 2001-04-12 | Method for preparing decomposition catalyst for organic halides and method for manufacturing filter for use in decomposing organic halides |
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| JP2000-119648 | 2000-04-20 | ||
| JP2000119648 | 2000-04-20 | ||
| JP2001112150A JP4508459B2 (en) | 2000-04-20 | 2001-04-11 | Method for producing organohalogen compound decomposition catalyst and method for producing organohalogen compound decomposition filter |
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|---|---|
| JP2002001117A true JP2002001117A (en) | 2002-01-08 |
| JP4508459B2 JP4508459B2 (en) | 2010-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4834274B2 (en) * | 2000-05-15 | 2011-12-14 | メタウォーター株式会社 | Adsorbent having organic halogen compound decomposition function and method for producing the same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114521A (en) * | 1996-10-07 | 1998-05-06 | Agency Of Ind Science & Technol | Superfine noble metal particle dispersed thin titanium dioxide film and its production |
| JPH10259074A (en) * | 1998-02-13 | 1998-09-29 | Agency Of Ind Science & Technol | Ceramic porous thin film |
| JP2000024500A (en) * | 1998-07-09 | 2000-01-25 | Mitsubishi Heavy Ind Ltd | Catalyst for exhaust gas treatment, exhaust gas treatment and treatment apparatus |
| JP2000220038A (en) * | 1998-02-13 | 2000-08-08 | Sumitomo Chem Co Ltd | Production of catalyst component-containing titania fiber |
| JP2000325787A (en) * | 1999-05-21 | 2000-11-28 | Toyota Motor Corp | Manufacture of exhaust gas cleaning catalyst |
| JP2002018291A (en) * | 2000-07-04 | 2002-01-22 | Ngk Insulators Ltd | Metal oxide catalyst and method for manufacturing the same |
-
2001
- 2001-04-11 JP JP2001112150A patent/JP4508459B2/en not_active Expired - Lifetime
- 2001-04-12 TW TW90108822A patent/TW470662B/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114521A (en) * | 1996-10-07 | 1998-05-06 | Agency Of Ind Science & Technol | Superfine noble metal particle dispersed thin titanium dioxide film and its production |
| JPH10259074A (en) * | 1998-02-13 | 1998-09-29 | Agency Of Ind Science & Technol | Ceramic porous thin film |
| JP2000220038A (en) * | 1998-02-13 | 2000-08-08 | Sumitomo Chem Co Ltd | Production of catalyst component-containing titania fiber |
| JP2000024500A (en) * | 1998-07-09 | 2000-01-25 | Mitsubishi Heavy Ind Ltd | Catalyst for exhaust gas treatment, exhaust gas treatment and treatment apparatus |
| JP2000325787A (en) * | 1999-05-21 | 2000-11-28 | Toyota Motor Corp | Manufacture of exhaust gas cleaning catalyst |
| JP2002018291A (en) * | 2000-07-04 | 2002-01-22 | Ngk Insulators Ltd | Metal oxide catalyst and method for manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4834274B2 (en) * | 2000-05-15 | 2011-12-14 | メタウォーター株式会社 | Adsorbent having organic halogen compound decomposition function and method for producing the same |
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|---|---|
| TW470662B (en) | 2002-01-01 |
| JP4508459B2 (en) | 2010-07-21 |
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