JPS5949845A - Catalyst for high temperature combustion - Google Patents
Catalyst for high temperature combustionInfo
- Publication number
- JPS5949845A JPS5949845A JP57158895A JP15889582A JPS5949845A JP S5949845 A JPS5949845 A JP S5949845A JP 57158895 A JP57158895 A JP 57158895A JP 15889582 A JP15889582 A JP 15889582A JP S5949845 A JPS5949845 A JP S5949845A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- contg
- layer
- carrier
- temperature
- 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.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 239000000446 fuel Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 5
- 239000011593 sulfur Substances 0.000 abstract description 5
- 229910052684 Cerium Inorganic materials 0.000 abstract description 3
- 229910052878 cordierite Inorganic materials 0.000 abstract description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 abstract description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052863 mullite Inorganic materials 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 229910003158 γ-Al2O3 Inorganic materials 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000008199 coating composition Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical compound CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
Ｃ発明の技術分野〕
本発明は、高温燃焼触媒に関し、更に詳しくは、イオウ
を含有する燃料に対し約ｓｏｏ’ａ〜１５００’０の温
度範囲において、高活性及び長寿命を有する高温燃焼触
媒に関する。DETAILED DESCRIPTION OF THE INVENTION C. Technical Field of the Invention The present invention relates to high temperature combustion catalysts, and more particularly to high temperature combustion catalysts that exhibit high activity and long life for sulfur-containing fuels in the temperature range of about soo'a to 1500'0. The present invention relates to a high temperature combustion catalyst with a long service life.
近年、石油資源等の枯渇化に伴い、エネルギー資源を効
率的に使用するため、例えば、ガスタービン等において
は、できるだけ高温において燃料を燃焼さぜることか望
まれている。In recent years, with the depletion of petroleum resources and the like, in order to use energy resources efficiently, for example, in gas turbines and the like, it is desired to burn fuel at as high a temperature as possible.
しかしながら、従来は、燃料と空気の混合物を、スパー
クプラグ等を用いて７７Ｎ ！に燃焼せしめる方法であ
るため、燃焼器内において、部分的に２０００℃を超え
る高温部が存在する。そして、この高温ｌ’ＩＳにおい
て、窒素酸化物（ＮＯｘ）が多：、￥に生成し、環境汚
染等の問題を生ずることが知られている。However, conventionally, a mixture of fuel and air was heated to 77N using a spark plug or the like. Since this is a method in which the fuel is combusted at a temperature of 2,000°C, there are some high-temperature parts in the combustor that exceed 2000°C. It is known that a large amount of nitrogen oxides (NOx) is generated in this high-temperature IS, causing problems such as environmental pollution.
このような問題を解消するために、ｆ′１１１！媒を用
いて燃料と空気の混合物を燃焼せしめる触媒燃焼方式が
提案されている。この燃焼方式によれば、均一燃焼がｏ
Ｊ能であり、且つ、ＮＯｘが生成しない上限温度である
１５００″Ｃａ度まで、燃焼温度を高めることができる
。To solve this problem, f'111! A catalytic combustion method has been proposed in which a mixture of fuel and air is combusted using a medium. According to this combustion method, uniform combustion is o
The combustion temperature can be raised to 1500"Ca degrees, which is the upper limit temperature at which NOx is generated.
現在、触媒燃焼方式に使用される触媒としてｅよ、白金
（Ｐｉ）系の貴煮属触亮が知られている。このような貴
金属系燃焼触媒は、例えば、Ｉ″４Ｌ１図に示したよう
に、一定の機械的強度を有する担体ｌ上に、活性担体と
してγ−アルミナ（ｒ −ＩＬＩ２０． ）２を塗布し
、更に、Ｖ演法により、貴金属３を担持させたものであ
る。Currently, platinum (Pi)-based metal catalysts are known as catalysts used in catalytic combustion systems. Such a noble metal combustion catalyst is produced by coating γ-alumina (r-ILI20.)2 as an active carrier on a carrier l having a certain mechanical strength, as shown in Figure I''4L1, for example. Furthermore, the precious metal 3 is supported using the V method.
しかしながら、上記した＊ 象に系燃焼触媒は、その耐
熱温度が通常６００°０と言イ）れており、それ以上の
温度域では触媒活性が急速に低下し、使用することがで
きないという問題点を有している。However, the heat-resistant temperature of the above-mentioned combustion catalyst is usually 600°C, and the problem is that the catalytic activity rapidly decreases in the temperature range higher than that, making it unusable. have.
６００°Ｃ以上の温度において、触媒活性刀（急速に低
下する原因は、次のように考えることができる。The reason why the catalyst activity rapidly decreases at temperatures above 600°C can be considered as follows.
し、燃焼性能が低下する。そして、第２に、γ−Ａ６０
．が１０００’Ｏ付近からそれ以上の温度において、α
−Ａ１！ｔｏ、に相転移するため、Ａｚ、Ｏ，州内にお
いて或いはＡ／２０３相が触媒金属と共に剥離脱落する
ことに起因すると考えられる。However, combustion performance deteriorates. And secondly, γ-A60
．． At temperatures around 1000'O and above, α
-A1! This is considered to be due to the fact that the A/203 phase or the A/203 phase is exfoliated together with the catalyst metal because of the phase transition to the catalytic metal.
さらにｐｔ系貸金属触媒は燃料ガス中に倉まれるイオウ
（Ｓ）により被毒するという問題点を有している。すｌ
ｊわちＳによる被毒は燃料ガス中のＳが酸化されて生成
した亜硫酸ガス（ＳＯ３）や三酸化イオウ＜５ＯＳ）が
担体のＡ６０．と反応しＡ／１（ＳＯＪｓになるため触
媒活性が低下するものと考えらり、ている。Furthermore, PT-based metallurgical catalysts have the problem of being poisoned by sulfur (S) contained in the fuel gas. Sl
In other words, poisoning by S is caused by A60. It is thought that the catalytic activity decreases because it reacts with A/1 (SOJs).
そこで貴金属系燃焼触媒の耐熱性及び耐イオン性を同上
しヒしめるため、活１・上世）−１ニーごあるｐ−４ｅ
２０゜層に金属を添加する・４（が行１λわ）ｌ、でい
イ）。仁の金Ａ１％の添加・効果は主に耐熱１ト１゛の
向−にに７うり、自動ｉ１ｊ触媒の一部に柔５いては、
ぞ０） ｊｉｉ：ｉ ；！ｌ！−１１＋、ｙが８０（）
Ｃ前後まで向上している模様である。Therefore, in order to improve the heat resistance and ion resistance of noble metal combustion catalysts, we
Add metal to the 20° layer. The addition and effect of 1% gold A1 is mainly in the direction of heat resistance 1 and 1, and it is added to some automatic I1J catalysts,
zo0) jii:i ;! l! -11+, y is 80()
It appears to have improved to around C.
本発明の目的はＳをｉＴむす１，１′、利に対し°Ｃ約
８００〜１５００”０の温度Ｊ：尼囲においてｂ高／−
査’１”、ｌＥ及び長／、？ 、込を有する高温燃焼触
媒を提（Ｊｌどｒろ具にある。）〔兄明の概要〕
本づろ明４らは上ｒ尼した現況に１監みて、Ｓを計５台
する燃料に対して８００’Ｏ以上の高温において使用ｌ
ｉＪ’ ｉ屯なｆ触媒について鋭意行！削を１に、ねた
結７［ト■セリウノ、、（Ｃｅ）を添加したγ−Ａｅ、
ｏ、の１ｉｊｊ、’？！Ｑ性が犬きＧ）の２点を組み合
イつぜ、第２図の１．・升に活性担体をＡ、ｒ２０３層
２と１７４０．ｊ＠６との２Ｊ？ｉ Ｉ’Ａ造とし１１
、へ１２０、ノ８１３にパラジウム（Ｐｄ） ４をＴ
Ｉ Ｕ２＋、所に山麓（Ｐｔ）５を分用′＃担持ざぜる
事により本発明を冗成するに到った。The object of the present invention is to connect S to iT 1,1', and to obtain a temperature of about 800 to 1500"0 at a temperature of J: 800 to 1,000 °C.
We proposed a high-temperature combustion catalyst with 1", 1E, and long /, ?, including (located in the Jl door). Supervise the use of fuel for a total of 5 units of S at high temperatures of 800'O or higher.
iJ'I'm working hard on the catalyst! γ-Ae with added (Ce),
o, no 1ijj,'? ! Combining the two points (G) whose Q quality is dog, we get 1. in Figure 2.・Add active carriers to A, r203 layer 2 and 1740. 2J with j@6? i I'A construction 11
, add palladium (Pd) 4 to 120 and 813
The present invention was made redundant by carrying Pt5 in IU2+.
即ち、本発明の高温燃焼触媒は、第２図に示す様に耐熱
性担体（１）と、該担体上に設けられパラジウム（４）
及びセリウムを含有す′るｒ−アルミナ層（２）と、該
Ａｔ？、Ｏ，層上に設けられ白金（５）を含有する多孔
質チタニア層（６）の３層から成ることｔ”特徴とする
ものである。That is, as shown in FIG. 2, the high-temperature combustion catalyst of the present invention comprises a heat-resistant carrier (1) and palladium (4) provided on the carrier.
and an r-alumina layer (2) containing cerium, and the At? , O, layer and a porous titania layer (6) containing platinum (5).
以下において、本発明を更に詳しく説明する。In the following, the invention will be explained in more detail.
本発明において使用される耐熱性担体は、１５００゛０
程度の高温酸化性雰囲気中においても安定な性Ｘｔ有す
るものであれはいかなるものでもよく、これらの具体例
としては、コージライト、ムライト、α−アルミナ、ジ
ルコニアスピネル、チタニア等のセラミック製担体等が
挙げられる。担体の形状は、通常、触媒体として使用さ
れている形状であれば特に制限はなく、例えば、ベレッ
ト状、ハニカム状等が挙げられる。The heat-resistant carrier used in the present invention is 1500゛0
Any material may be used as long as it has a stable property Xt even in an oxidizing atmosphere at a high temperature, and specific examples thereof include ceramic supports such as cordierite, mullite, α-alumina, zirconia spinel, and titania. Can be mentioned. The shape of the carrier is not particularly limited as long as it is a shape normally used as a catalyst body, and examples thereof include a pellet shape, a honeycomb shape, and the like.
本発明において使用される金属に含有するγ−Ａ／２０
．層は活性担体としての機能を有するものである。γ−
Ａｚ、０．層に添加される金属の量はＣｅについては、
その総量がｒ−Ａｚ！、０．に対して１〜１０重はチで
ある事が好ましく１〜５ ｊｉ’＋、 ｂｊ ％である
ことが（
更に好ましい。楔−ｈｌ！２ｏ３４目に添加する金４・
弓の■えが上記範囲より少ない場合に（ｌｉ耐熱注の向
上が認められす、−力、多い場合に＋ｊ１、（コｅの酸
化Ｉ吻がＡｒ。γ-A/20 contained in the metal used in the present invention
．． The layer functions as an active carrier. γ-
Az, 0. The amount of metal added to the layer is as follows for Ce:
The total amount is r-Az! ,0. It is preferable that 1 to 10% of gold is added to the wedge, and it is more preferable that 1 to 5% of gold is added to the wedge.
■If the bow is less than the above range, an improvement in heat resistance is recognized (li, - force, if it is more than +j1, (the oxidation I of the bow is Ar).
０３０粒界に多量に析出し、γ−Ａ／２０．相のす９１
度が低下してしまうためである。A large amount precipitated at the 030 grain boundaries, and γ-A/20. Ainosu 91
This is because the degree of oxidation decreases.
またＰｄについては完成触媒に対し４２層１以上である
ことが好ましい。さらに′ｌ″＋０２ＪＦＩも活１・゛
を担体としての機能を有するものである。Ｔｉｅ、層に
添加されるＰｔ債は完成触媒当り（Ｊ、５ｆ／１以上が
好ましい。Regarding Pd, it is preferable that the number of layers is 42 layers or more for the finished catalyst. Furthermore, 'l''+02JFI also has the function of active 1.' as a carrier. The amount of Pt bond added to the layer is preferably 5f/1 or more per finished catalyst (J, 5f/1 or more).
またＴ ｉ ０２層の厚さｉｉ恥μ以下でできるだけう
すい方が好ましい。特に厚みが５（〕μを越えるとり？
！、Ｓ暁性能が低下するためである。Further, it is preferable that the thickness of the T i 02 layer be as thin as possible, with the thickness ii μ or less. Especially if the thickness exceeds 5 (〕μ)?
! This is because the S dawn performance deteriorates.
上記した本発明の高温燃焼触媒は、“例えは、次のよう
にして製造することができる。The high-temperature combustion catalyst of the present invention described above can be manufactured, for example, as follows.
先ず、アルミナ固型分を８０％含有するアルミナζ
ゾル、４−Ａ／、Ｏ，から成るアルミナコーティング組
成物に、所定量のＰｄとＣｅを例えはその金属の塩化物
、硝酸塩等の金属塩の形で添加する。First, a predetermined amount of Pd and Ce are added to an alumina coating composition consisting of an alumina ζ sol, 4-A/, O, containing 80% alumina solid content, for example, a metal salt such as a chloride or nitrate of the metal. Add in the form of
次いで、上記組成物を、例えば、ホールミル等を用いて
固形Ｉ吻を粉砕する。このようにして得たコーティング
用液体を、耐熱性担体に流しかける次にチタニアゾルを
主成分とするコーティング組成物に所定はのＰｔを例え
ば塩化物等の金属塩の形で添加後、例えばボールミル等
を用いて混合する。このようにして得たコーティング用
液体を、アルミナがコーティングされた耐熱性担体に流
しかける等の操作により被覆せしめ次にエアガン等でコ
ーディングされたチタニアゾルを吹きとはす等して被覆
量を制御する。Next, the above-mentioned composition is pulverized to form a solid I-nose using, for example, a whole mill. The coating liquid thus obtained is poured onto a heat-resistant carrier, and then a predetermined amount of Pt is added in the form of a metal salt such as chloride to a coating composition containing titania sol as a main component. Mix using. The coating liquid thus obtained is poured onto the alumina-coated heat-resistant carrier to coat it, and then the coated titania sol is blown off with an air gun or the like to control the amount of coating. .
そして常温で充分乾燥した後、例えば２５０°Ｃで５時
間和度焼成する。After sufficiently drying at room temperature, it is fired at 250° C. for 5 hours, for example.
最イ麦に、例えば、水素雰囲気中、５５０°Ｃで３時間
和度焼成することにより、本発明の触孫を得ることがで
きる。The seeds of the present invention can be obtained by baking the best wheat at 550° C. for 3 hours in a hydrogen atmosphere, for example.
尚、上記触媒金属ケよ、例えば、塩化白金酸、塩化パラ
ジウム等の金属塩を水等に溶解した形で使用するこ七が
好ましい。It is preferable to use the above catalyst metal, for example, a metal salt such as chloroplatinic acid or palladium chloride dissolved in water or the like.
木登ψ］の高温燃焼触媒力５優り、た面１熱性を有する
理由は明らかでけないが、次のように考えることができ
る。Although it is not clear why the high-temperature combustion catalytic power of ``Kinobo ψ'' is superior to that of 5 and the thermal property is 1, it can be considered as follows.
即ち、系−Ａ １２０３７ｆｌにＰｄを含有さ−（主る
）３＋、に、よりＰｄＯ熱移動を阻止するとともに、Ｃ
ｅを添加する事によ１，１ 、ｌ’１２０３Ｍの結晶粒
界が微細化するためクラックの発生や伝播が防止さり、
ｍ４熱性が向上１．たものと考えられる。That is, system-A 12037fl contains Pd (mainly) 3+, which prevents PdO heat transfer and also prevents C
By adding e, the grain boundaries of 1,1 and l'1203M become finer, which prevents the occurrence and propagation of cracks.
m4 thermal properties improved 1. It is thought that the
さらに本発明の高温燃焼触礁が５ｆ）した剛イオウ性を
示すのはＰｄ、！１−Ｃｅを含有するＡｊ？、０．層の
上にコーティングされたＰｔを含有するＴ ｉ ０２層
の優れた耐Ｓ性によるものと考えられる。Furthermore, the high-temperature combustion tactile reef of the present invention exhibits rigid sulfur properties as shown in 5f) by Pd! Aj? containing 1-Ce? ,0. This may be due to the excellent S resistance of the Pt-containing T i 02 layer coated on top of the layer.
実施例】
次に示す組成のアルミナコーティング組成物をｎ１製し
た。EXAMPLE An alumina coating composition n1 having the following composition was prepared.
前記組成物をボールミルを用いて常温で２時間混合した
。次いでコージライト製ハニカム状担体（１平方インチ
当り２００セル）に前記アルミナコーティングに１１成
物を水に分散゛した液体を数回流しかけた後常温で約１
日乾燥した。このアルミナがコーティングされたハニカ
ム状担体を（ｉ５０’ｏで３時間焼成した。The composition was mixed using a ball mill at room temperature for 2 hours. Next, a liquid prepared by dispersing Compound 11 in water was poured onto the alumina coating several times onto a cordierite honeycomb carrier (200 cells per square inch), and then the solution was heated to about 1% at room temperature.
Dry in the sun. This alumina-coated honeycomb carrier was fired at (i50'o) for 3 hours.
次いで次に示す胆成のチタニアコーティング組成物を調
製した。Next, the following titania coating composition was prepared.
前記組成物をホールミルを用いて常ζ１′Ａで２時間混
合した。次いで前記した焼成アルミナがコーティングさ
れたハニカム状担体に前記チタニアコーティング４成物
を水に分散した液体を数回流しかけた後、エアガンで過
剰のチタニアコーティング組成物を吹き飛ばした。そし
て、このチタニアがコーティングされたハニカム状担体
を２５０’Ｏで５時間焼成した。The composition was mixed using a whole mill at a constant ζ1'A for 2 hours. Next, a liquid prepared by dispersing the titania coating quaternary composition in water was poured onto the honeycomb-shaped carrier coated with the above-mentioned calcined alumina several times, and then the excess titania coating composition was blown off with an air gun. The titania-coated honeycomb carrier was then fired at 250'O for 5 hours.
次いでこのアルミナとチタニアがコーティングされた担
体を水素雰囲気中におい−Ｃ，５ｓｏ’Ｕで３時間焼成
し本発明に係る高温すどに焼触媒を１４だ。Next, this alumina and titania coated carrier was calcined with -C,5so'U in a hydrogen atmosphere for 3 hours to obtain a high temperature sintered catalyst according to the present invention.
実施例２
実施例１と同様の手法により、アルミナコーティングに
金談れるＰｄ及びＣｅ社、さら）Ｃチタニアコーティン
グの厚さ及びＰｔの添加量を震えて、表に示すような（
Ｂ）〜（へ）の１２種大計１の高温燃焼触媒を調製した
。Example 2 Using the same method as in Example 1, the thickness of the titania coating and the amount of Pt added were varied, and the thickness of the titania coating and the amount of Pt added were changed as shown in the table.
A total of 12 types of high-temperature combustion catalysts (B) to (F) were prepared.
（以ド余白）
よる燃焼触媒（Ａ）の流通試験開始時の燃焼特性の比を
力去媒活性保持率として計算した。(Left space below) The ratio of the combustion characteristics of the combustion catalyst (A) at the start of the flow test was calculated as the removal medium activity retention rate.
それらの結果を、組成とともに表に併記した０表から明
らかなように、本発明の高温燃焼触媒は、比較例のもの
に比べて、触媒の耐熱性の指標となる触媒活性保持率が
、格段に優れていることが確認された。As is clear from Table 0, which lists these results together with the composition, the high-temperature combustion catalyst of the present invention has a significantly higher catalytic activity retention rate, which is an index of the heat resistance of the catalyst, than that of the comparative example. It was confirmed that it is excellent.
尚、上記実施例においてはハニカム状担体を使用したが
、ペレット状担体を使用した場合にも同様の結果が得ら
れた。Although a honeycomb-shaped carrier was used in the above example, similar results were obtained when a pellet-shaped carrier was used.
本発明の高温燃焼触媒は、従来の貴会ス・、４糸燃焼触
媒に比べて、イオウな含有する燃料に対し大幅にその耐
熱性が向上されたものである。従って、エネルギーの節
約及び効率的利用が可能であり、又、ＮＯｘ等を発生さ
せることなく燃焼が可能であるため、」Ａ境汚染等を奪
き起こす仁とがないものである。The high-temperature combustion catalyst of the present invention has significantly improved heat resistance against sulfur-containing fuels, as compared to conventional combustion catalysts. Therefore, it is possible to save and use energy efficiently, and it is possible to burn it without generating NOx, etc., so there is no need to cause environmental pollution.
第１図は貴金属系燃焼触媒の概念図、杷２図は本発明の
高温燃焼触媒の概念図。
１〜耐耐熱性体 ２〜γ−アルミナ層３〜貴金属
４〜ＰｄFigure 1 is a conceptual diagram of a noble metal-based combustion catalyst, and Figure 2 is a conceptual diagram of a high-temperature combustion catalyst of the present invention. 1~Heat resistant body 2~γ-alumina layer 3~Precious metal
4~Pd
Claims (1)
及Ｕ セＩＪウム（ｃ鴎を含有するｒ−アルミナ（”
’２’ｓ） Ｎト、ａ Ａｌｔｏｓ ｍ 上１ｃ 設’
ｄ ラレ白金（ｐｔ ）を含有しかつ厚さ力ｉ５０ｐｍ
以下である多孔質チタニア（Ｔｉｅ、）層の３層から構
成される高温燃焼触媒。A heat-resistant carrier and palladium (Pd) provided on the carrier.
and r-alumina containing c-alumina (”
'2's) Nt, a Altos m Upper 1c Set'
d Contains platinum (PT) and has a thickness of 50 pm
A high-temperature combustion catalyst consisting of three layers of porous titania (Tie) as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57158895A JPS5949845A (en) | 1982-09-14 | 1982-09-14 | Catalyst for high temperature combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57158895A JPS5949845A (en) | 1982-09-14 | 1982-09-14 | Catalyst for high temperature combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5949845A true JPS5949845A (en) | 1984-03-22 |
Family
ID=15681716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57158895A Pending JPS5949845A (en) | 1982-09-14 | 1982-09-14 | Catalyst for high temperature combustion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5949845A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0201670A2 (en) * | 1985-05-08 | 1986-11-20 | Volkswagen Aktiengesellschaft | Device for the preparation of liquids being essentially composed of methanol |
| JPS63232854A (en) * | 1987-03-20 | 1988-09-28 | Toshiba Corp | High-temperature combustion catalyst and its production |
| CN112246250A (en) * | 2020-10-12 | 2021-01-22 | 中国石油大学(北京) | Integral catalytic combustion catalyst and preparation method and application thereof |
-
1982
- 1982-09-14 JP JP57158895A patent/JPS5949845A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0201670A2 (en) * | 1985-05-08 | 1986-11-20 | Volkswagen Aktiengesellschaft | Device for the preparation of liquids being essentially composed of methanol |
| JPS63232854A (en) * | 1987-03-20 | 1988-09-28 | Toshiba Corp | High-temperature combustion catalyst and its production |
| CN112246250A (en) * | 2020-10-12 | 2021-01-22 | 中国石油大学(北京) | Integral catalytic combustion catalyst and preparation method and application thereof |
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