JPH08309188A - Ammonia decomposition catalyst and ammonia decomposition method - Google Patents
Ammonia decomposition catalyst and ammonia decomposition methodInfo
- Publication number
- JPH08309188A JPH08309188A JP7120999A JP12099995A JPH08309188A JP H08309188 A JPH08309188 A JP H08309188A JP 7120999 A JP7120999 A JP 7120999A JP 12099995 A JP12099995 A JP 12099995A JP H08309188 A JPH08309188 A JP H08309188A
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- Prior art keywords
- ammonia
- catalyst
- parts
- powder catalyst
- ammonia decomposition
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は各種排ガス等に含まれる
アンモニアを無害な窒素に分解する触媒及び同触媒を使
用してアンモニアを分解する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst for decomposing ammonia contained in various exhaust gases into harmless nitrogen and a method for decomposing ammonia using the catalyst.
【０００２】[0002]
【従来の技術】アンモニアは肥料や硝酸の製造原料、冷
媒、排ガス中の窒素酸化物除去用還元剤等幅広い分野で
使用されている。したがって、各種化学品製造工場、冷
凍機等の廃棄物処理工場あるいは燃焼排ガス処理施設等
からは多量のアンモニアが排出される。アンモニアは特
異な刺激臭を有する気体であり大気中への放出は極力抑
える必要がある。しかし、生物の腐敗によるアンモニア
の生成や廃棄物中の冷媒からのアンモニアの放散、さら
に煙道排ガス中の窒素酸化物の還元に用いられるアンモ
ニアが未反応のまま大気放出される等、多くの場所でア
ンモニアが大気放出されているのが現状である。Ammonia is used in a wide range of fields such as a raw material for producing fertilizer and nitric acid, a refrigerant, and a reducing agent for removing nitrogen oxides in exhaust gas. Therefore, a large amount of ammonia is emitted from various chemical product manufacturing plants, waste treatment plants such as refrigerators, and combustion exhaust gas treatment facilities. Ammonia is a gas with a unique irritating odor, and its release into the atmosphere must be suppressed as much as possible. However, in many places, such as the generation of ammonia due to the decay of living organisms, the emission of ammonia from the refrigerant in waste, and the ammonia used for the reduction of nitrogen oxides in flue gas, is released into the atmosphere without reaction. At present, ammonia is released into the atmosphere.
【０００３】[0003]
【発明が解決しようとする課題】アンモニアの大気放出
を防ぐ方法の一つとしてシリカ系担体に酸化鉄や酸化ニ
ッケルを担持させた触媒を利用して次の反応式によりア
ンモニアを無害な窒素に分解する方法が知られている。As one of the methods for preventing atmospheric release of ammonia, a catalyst in which iron oxide or nickel oxide is supported on a silica-based carrier is used to decompose ammonia into harmless nitrogen according to the following reaction formula. It is known how to do it.
【化１】２ＮＨ3 ＋３／２Ｏ2 →Ｎ2 ＋３Ｈ2 Ｏ ところが、従来の触媒では４００℃以下の低温での反応
活性が乏しく、さらに前記反応以外に次のような副反応
によりＮＯ，ＮＯ2 ，Ｎ2 Ｏ等の生成が認められ、新た
に大気汚染を生じる恐れがあった。## STR1 ## 2NH 3 + 3 / 2O 2 → N 2 + 3H 2 O However, the conventional catalyst has poor reaction activity at a low temperature of 400 ° C. or lower, and in addition to the above reaction, the following side reactions cause NO and NO 2 , N 2 O, etc. were recognized, and there was a possibility that air pollution would be newly generated.
【化２】２ＮＨ3 ＋５／２Ｏ2 →２ＮＯ＋３Ｈ2 Ｏ ２ＮＨ3 ＋７／２Ｏ2 →２ＮＯ2 ＋３Ｈ2 Ｏ ２ＮＨ3 ＋ ２Ｏ2 →Ｎ2 Ｏ＋３Ｈ2 ＯEmbedded image 2NH 3 + 5 / 2O 2 → 2NO + 3H 2 O 2NH 3 + 7 / 2O 2 → 2NO 2 + 3H 2 O 2NH 3 + 2O 2 → N 2 O + 3H 2 O
【０００４】本発明の目的は前記従来技術の問題点を解
決し、大気汚染のもととなる窒素酸化物の副生を極力抑
え、高い収率でアンモニアを分解除去することのできる
アンモニア分解触媒及び同触媒を使用したアンモニア分
解方法を提供することにある。The object of the present invention is to solve the above-mentioned problems of the prior art, to suppress by-products of nitrogen oxides that cause air pollution as much as possible, and to decompose and remove ammonia with high yield. And to provide a method for decomposing ammonia using the same catalyst.
【０００５】[0005]
【課題を解決するための手段】本発明は（１）チタン酸
化物担体上に、バナジウム、タングステン及びモリブデ
ンよりなる群から選ばれた元素の酸化物の少なくとも１
種以上とルテニウムを担持させてなることを特徴とする
アンモニア分解触媒、（２）チタン酸化物担体：（バナ
ジウム、タングステン及びモリブデンよりなる群から選
ばれた元素の酸化物の少なくとも１種以上）：ルテニウ
ムの重量比が１００：０．１〜５０：０．０１〜２０で
あることを特徴とする上記（１）記載のアンモニア分解
触媒、（３）上記（１）又は（２）記載のアンモニア分
解触媒にアンモニア含有ガスを接触させることを特徴と
するアンモニア含有ガスのアンモニアの分解方法及び
（４）アンモニア分解触媒に１００〜６００℃の温度で
アンモニア含有ガスを接触させることを特徴とする上記
（３）記載のアンモニア含有ガスのアンモニアの分解方
法である。The present invention provides (1) at least one oxide of an element selected from the group consisting of vanadium, tungsten and molybdenum on a titanium oxide support.
Ammonia decomposition catalyst, characterized in that at least one species and ruthenium are supported, (2) titanium oxide carrier: (at least one species of oxide of an element selected from the group consisting of vanadium, tungsten and molybdenum): The weight ratio of ruthenium is 100: 0.1 to 50: 0.01 to 20, and the ammonia decomposition catalyst according to (1) above, (3) the ammonia decomposition according to (1) or (2) above. A method for decomposing ammonia of an ammonia-containing gas, which comprises contacting the catalyst with an ammonia-containing gas, and (4) contacting the ammonia-decomposing catalyst with the ammonia-containing gas at a temperature of 100 to 600 ° C. ) The method for decomposing ammonia of the ammonia-containing gas described above.
【０００６】[0006]
【作用】本発明の触媒はチタン酸化物担体上にアンモニ
アの分解活性に優れたルテニウム（ＴｉＯ2 ：１００重
量部に対してＲｕ：０．０１〜２０重量部が好ましい）
と、アンモニアを還元剤としたときに脱硝活性に優れた
バナジウム、タングステン及びモリブデンよりなる群か
ら選ばれた少なくとも１種類（ＴｉＯ2 ：１００重量部
に対し、これら酸化物：０．１〜５０重量部が好まし
い）の元素の酸化物より構成される。各々の反応式は下
記のとおりである。The catalyst of the present invention has a ruthenium excellent in activity of decomposing ammonia on a titanium oxide support (Ru: 0.01 to 20 parts by weight is preferable with respect to 100 parts by weight of TiO 2 ).
And at least one kind selected from the group consisting of vanadium, tungsten and molybdenum having excellent denitration activity when ammonia is used as a reducing agent (TiO 2 : 100 parts by weight of these oxides: 0.1 to 50 parts by weight). Part is preferred). Each reaction formula is as follows.
【化３】 ２ＮＨ3 ＋５／２Ｏ2 →２ＮＯ＋３Ｈ2 Ｏ ・・・・ ４ＮＨ3 ＋４ＮＯ＋Ｏ2 →４Ｎ2 ＋６Ｈ2 Ｏ ・・・・Embedded image 2NH 3 + 5 / 2O 2 → 2NO + 3H 2 O ... 4NH 3 + 4NO + O 2 → 4N 2 + 6H 2 O ...
【０００７】すなわち、式はルテニウムが３００℃付
近の低温域にて高活性を有し、式は担体であるチタン
酸化物及びバナジウム、タングステン及びモリブデンよ
りなる群から選ばれた少なくとも１種類以上の元素の酸
化物が高活性を有する。すなわち、式と式の反応を
逐次的に進行することができれば、アンモニアを選択的
にＮ2 に分解することが可能である。That is, the formula is that ruthenium has a high activity in a low temperature range around 300 ° C., and the formula is at least one element selected from the group consisting of titanium oxide and vanadium, tungsten and molybdenum, which are carriers. The oxides of are highly active. That is, ammonia can be selectively decomposed into N 2 if the reactions of the formulas can be successively progressed.
【０００８】ルテニウムは種々の担体にて含浸法等によ
り調製し、高いＮＨ3 分解活性を示し、とりわけ脱硝触
媒として使用されているチタニア（ＴｉＯ2 ）担体上で
十分な活性を示す。また、バナジウム、タングステン及
びモリブデンよりなる群から選ばれた１種以上の元素の
酸化物は通常脱硝触媒として使用されており、チタニア
担体上にＶ2 Ｏ5 、ＷＯ3 、ＭｏＯ3 のうち１種以上が
含浸法又は共沈法により担持される。前記触媒は必要に
よりチタニアゾル、アルミナゾル、シリカゾルなどのバ
インダ成分やコージェライト等の基材を使用し、ウォッ
シュコート法又はソリット法によりハニカム化して使用
するのが好ましい。Ruthenium, which is prepared by various methods such as impregnation method, exhibits a high NH 3 decomposition activity and, in particular, a sufficient activity on a titania (TiO 2 ) carrier used as a denitration catalyst. Further, an oxide of one or more elements selected from the group consisting of vanadium, tungsten and molybdenum is usually used as a denitration catalyst, and one of V 2 O 5 , WO 3 and MoO 3 on a titania carrier is used. The above is supported by the impregnation method or the coprecipitation method. As the catalyst, if necessary, a binder component such as titania sol, alumina sol, silica sol or a base material such as cordierite is used, and it is preferable to use it by forming it into a honeycomb by a wash coat method or a solit method.
【０００９】アンモニアを含有するガスを、好ましくは
１００〜６００℃の温度で前記触媒に接触させることに
より、ガス中のアンモニアは主に窒素に分解される。こ
の分解反応は選択的に進行し、ＮＯ、ＮＯ2 、Ｎ2 Ｏ等
の有害ガスの副生は少ない。さらに、本発明の触媒はＳ
Ｏ2 が共存する排ガスにおいても、アンモニア分解活性
が低下することなく安定なアンモニア分解性能を保つ。
また、ＳＯ2 をＳＯ3へ酸化させる極力は低いため酸性
硫酸アンモニウム生成の不具合も見られない。さらに、
また本発明の触媒はアンモニア含有ガス中にＣＯや炭化
水素が共存にもアンモニア分解活性、Ｎ 2選択性に変化
をもたらすことはない。なお、Ｎ2 選択性とは分解した
ＮＨ3 のうちＮ2 へ転化した割合を示すもので、（減少
ＮＨ3 量−生成ＮＯX 量）／減少ＮＨ3 量と定義され
る。By contacting a gas containing ammonia with the catalyst at a temperature of preferably 100 to 600 ° C., the ammonia in the gas is mainly decomposed into nitrogen. This decomposition reaction progresses selectively, and there are few by-products of harmful gases such as NO, NO 2 and N 2 O. Further, the catalyst of the present invention is S
Even in exhaust gas in which O 2 coexists, the ammonia decomposing activity does not decrease, and stable ammonia decomposing performance is maintained.
Further, since the amount of oxidizing SO 2 to SO 3 is as low as possible, no problem of formation of ammonium acid sulfate is observed. further,
Further, the catalyst of the present invention does not cause a change in ammonia decomposition activity and N 2 selectivity even when CO and hydrocarbon coexist in the ammonia-containing gas. The N 2 selectivity refers to the ratio of decomposed NH 3 converted to N 2 , and is defined as (reduced NH 3 amount-generated NO X amount) / reduced NH 3 amount.
【００１０】[0010]
【実施例】以下、実施例により本発明の触媒及びアンモ
ニアの分解除去方法を具体的に説明する。EXAMPLES The catalyst and the method for decomposing and removing ammonia according to the present invention will be specifically described below with reference to examples.
【００１１】（例１）（触媒の実施例） チタニア（ＴｉＯ2 ）担体にメタバナジン酸アンモニウ
ム（ＮＨ4 ＶＯ3 ）、パラタングステン酸アンモニウム
｛（ＮＨ4 ）10Ｈ10Ｗ12Ｏ46・６Ｈ2 Ｏ｝を各々１０％
メチルアミン水溶液で溶かし、Ｖ2 Ｏ5 で４ｗｔ％、Ｗ
Ｏ3 で８ｗｔ％を含浸法により担持させ、蒸発・乾固し
て５００℃×６時間焼成して粉末触媒を得た。さらに、
この粉末触媒に塩化ルテニウム（ＲｕＣｌ3 ）塩酸水溶
液を含浸させＲｕを０．５ｗｔ％担持させ、蒸発・乾固
後、５００℃、６時間焼成して粉末触媒１を得た。[0011] (Example 1) (Example of catalyst) titania (TiO 2) carrier ammonium metavanadate (NH 4 VO 3), ammonium paratungstate {(NH 4) 10 H 10 W 12 O 46 · 6H 2 O } Each 10%
Dissolve in an aqueous solution of methylamine, add 2 wt% of V 2 O 5 , W
8 wt% of O 3 was supported by an impregnation method, evaporated to dryness, and calcined at 500 ° C. for 6 hours to obtain a powder catalyst. further,
This powder catalyst was impregnated with a ruthenium chloride (RuCl 3 ) hydrochloric acid aqueous solution to support 0.5 wt% of Ru, evaporated and dried, and then calcined at 500 ° C. for 6 hours to obtain powder catalyst 1.
【００１２】得られた粉末触媒１００部に対してバイン
ダとしてチタニアゾル１０部（ＴｉＯ2 ：２０ｗｔ％）
及び水２００部を加え、スラリとして７．６ｍｍピッ
チ、壁厚１ｍｍのコージェライトハニカム基材にウォッ
シュコートして、基材表面積当り２００ｇ／ｍ2 のコー
ト量を担持した。得られた触媒をハニカム触媒１とす
る。With respect to 100 parts of the obtained powder catalyst, 10 parts of titania sol as a binder (TiO 2 : 20 wt%)
And 200 parts of water were added, and as a slurry, a cordierite honeycomb base material having a 7.6 mm pitch and a wall thickness of 1 mm was wash-coated to carry a coating amount of 200 g / m 2 per surface area of the base material. The obtained catalyst is called honeycomb catalyst 1.
【００１３】（例２）（触媒の実施例） 上記ハニカム触媒１の調製法でＶ2 Ｏ5 の担持量を５ｗ
ｔ％、ＷＯ3 の担持量を９ｗｔ％として他は例１と同様
な方法で調製してハニカム触媒２を得た。また、上記ハ
ニカム触媒１の調製法でパラタングステン酸アンモニウ
ムの代わりにモリブデン酸アンモニウム｛（ＮＨ4 ）2
ＭｏＯ4 ｝を用いてＭｏＯ3 で８ｗｔ％担持させた他は
例１と同様な方法で調製してハニカム触媒３を得た。加
えて、上記ハニカム触媒１の調製法でパラタングステン
酸アンモニウムを使用しない他は例１と同様な方法で調
製してハニカム触媒４を得た。さらに、上記例１の粉末
触媒１に水及びグラスファイバを添加して混練を行い、
７．６ｍｍピッチ、壁厚１．５ｍｍの押し出しハニカム
成形品を製造した。この触媒をハニカム触媒５とする。(Example 2) (Catalyst example) In the method for preparing the above-mentioned honeycomb catalyst 1, the supported amount of V 2 O 5 was 5 w.
Honeycomb catalyst 2 was obtained by the same method as in Example 1 except that t% and the amount of WO 3 supported were 9 wt%. In addition, in the method for preparing the honeycomb catalyst 1, ammonium molybdate {(NH 4 ) 2 is used instead of ammonium paratungstate.
A honeycomb catalyst 3 was obtained by the same method as in Example 1 except that 8% by weight of MoO 3 was supported by using MoO 4 }. In addition, a honeycomb catalyst 4 was obtained by the same method as in Example 1 except that ammonium paratungstate was not used in the method for preparing the honeycomb catalyst 1. Further, water and glass fiber were added to the powder catalyst 1 of Example 1 and kneaded,
An extruded honeycomb molded product having a 7.6 mm pitch and a wall thickness of 1.5 mm was manufactured. This catalyst is referred to as a honeycomb catalyst 5.
【００１４】（例３）（触媒の実施例） 上記ハニカム触媒１の調製法においてチタニア担体上に
メタバナジン酸アンモニウム、パラタングステン酸アン
モニウム、塩化ルテニウムを同時にメチルアミン水溶液
に溶かし、Ｖ2 Ｏ5 、ＷＯ3 、Ｒｕ2 Ｏ3 を共含浸さ
せ、例１と同様の組成にて、焼成処理を行い粉末触媒６
及びハニカム触媒６を得た。(Example 3) (Example of catalyst) In the method for preparing the above-mentioned honeycomb catalyst 1, ammonium metavanadate, ammonium paratungstate, and ruthenium chloride were simultaneously dissolved in a methylamine aqueous solution on a titania carrier, and V 2 O 5 , WO 3 and Ru 2 O 3 were co-impregnated, and the same composition as in Example 1 was used for the calcination treatment to obtain powder catalyst 6
And the honeycomb catalyst 6 was obtained.
【００１５】（例４）（アンモニア分解の実施例） ４０ｍｍ×５０ｍｍ×１５０ｍｍＬのアンモニア分解触
媒３本を直列に設置し、反応試験を実施した。実験条件
は下記の表１のとおりである。Example 4 Example of Ammonia Decomposition A reaction test was carried out by placing three 40 mm × 50 mm × 150 mmL ammonia decomposition catalysts in series. The experimental conditions are as shown in Table 1 below.
【００１６】[0016]
【表１】 [Table 1]
【００１７】性能評価は反応初期状態におけるアンモニ
ア分解率及びＮＯX （ＮＯ、ＮＯ2、Ｎ2 Ｏ）生成率及
びＳＯ2 酸化率を測定することによって行なった。[0017] Performance evaluation was performed by measuring the ammonia decomposition ratio at the initial reaction conditions and NO X (NO, NO 2, N 2 O) production rates and SO 2 oxidation rate.
【００１８】なお、アンモニア分解率及びＮＯX 生成率
は次の式により求めた。[0018] Incidentally, the ammonia decomposition ratio and NO X generation rate was determined by the following equation.
【数１】○アンモニア分解率（％）＝〔（入口ＮＨ3 −
出口ＮＨ3 ）／入口ＮＨ3 〕×１００ ○ＮＯX 生成率（％）＝〔出口（Ｎ2 Ｏ×２＋ＮＯ＋Ｎ
Ｏ2 ）／入口ＮＨ3 〕×１００ ○ＳＯ2 酸化率（％）＝〔出口ＳＯ3 ／入口ＳＯ2 〕×
１００[Formula 1] ○ Ammonia decomposition rate (%) = [(inlet NH 3 −
Outlet NH 3 ) / Inlet NH 3 ] × 100 ○ NO x production rate (%) = [Outlet (N 2 O × 2 + NO + N
O 2 ) / inlet NH 3 ] × 100 ○ SO 2 oxidation rate (%) = [outlet SO 3 / inlet SO 2 ] ×
100
【００１９】結果を下記表２に示した。本発明脱硝触媒
を用いたアンモニア分解方法においては、アンモニア分
解率は約９０％、ＮＯX 生成率は２〜４％、ＳＯ2 酸化
率は約１％と何れも高性能を有することを確認した。The results are shown in Table 2 below. In the ammonia decomposition method using the present invention denitration catalyst, the ammonia decomposition rate is about 90%, NO X generation rate 2 to 4%, SO 2 oxidation rate was confirmed to have about 1% and both high .
【００２０】[0020]
【表２】 [Table 2]
【００２１】（例５）（アンモニア分解の実施例） ハニカム触媒１〜５を使用し例４と同一の条件にて３０
００時間通ガスすることにより耐久性評価試験を実施し
た。その結果を表３に示す。前記ガス条件にて３０００
時間供給後においてもほぼ表２と同様のアンモニア分解
率、ＮＯX 生成率及びＳＯ2 酸化率を維持しており、耐
久性に優れた触媒であることが確認された。(Example 5) (Example of decomposition of ammonia) Using honeycomb catalysts 1 to 5 under the same conditions as in Example 4
A durability evaluation test was carried out by passing gas for 00 hours. Table 3 shows the results. 3000 under the above gas conditions
Almost Table 2 the same ammonia decomposition rate even after time supply, maintains the NO X generation rate and SO 2 oxidation rate, it was confirmed that excellent catalysts in durability.
【００２２】[0022]
【表３】 [Table 3]
【００２３】[0023]
【発明の効果】本発明によれば、ＳＯ2 の酸化やＮＯX
等の副生成物を極力抑制して、アンモニアを無害な窒素
に分解することができる。このような分解処理方法は従
来なかったものであり、その産業上の利用価値は極めて
大きいものがある。According to the present invention, SO 2 oxidation and NO x
It is possible to decompose ammonia into harmless nitrogen by suppressing by-products such as. Such a decomposition treatment method has never been used before, and its industrial utility value is extremely high.
Claims (4)
ングステン及びモリブデンよりなる群から選ばれた元素
の酸化物の少なくとも１種以上とルテニウムを担持させ
てなることを特徴とするアンモニア分解触媒。1. An ammonia decomposing catalyst, which comprises ruthenium and at least one oxide of an element selected from the group consisting of vanadium, tungsten, and molybdenum, supported on a titanium oxide carrier.
グステン及びモリブデンよりなる群から選ばれた元素の
酸化物の少なくとも１種以上）：ルテニウムの重量比が
１００：０．１〜５０：０．０１〜２０であることを特
徴とする請求項１記載のアンモニア分解触媒。2. A titanium oxide carrier: (at least one kind of oxide of an element selected from the group consisting of vanadium, tungsten and molybdenum): ruthenium in a weight ratio of 100: 0.1 to 50: 0.01. The ammonia decomposition catalyst according to claim 1, wherein
媒にアンモニア含有ガスを接触させることを特徴とする
アンモニア含有ガスのアンモニアの分解方法。3. A method for decomposing ammonia of an ammonia-containing gas, which comprises bringing the ammonia-containing gas into contact with the ammonia decomposition catalyst according to claim 1.
の温度でアンモニア含有ガスを接触させることを特徴と
する請求項３記載のアンモニア含有ガスのアンモニアの
分解方法。4. An ammonia decomposition catalyst having a temperature of 100 to 600 ° C.
The method for decomposing ammonia of an ammonia-containing gas according to claim 3, wherein the ammonia-containing gas is contacted at the temperature of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120999A JPH08309188A (en) | 1995-05-19 | 1995-05-19 | Ammonia decomposition catalyst and ammonia decomposition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7120999A JPH08309188A (en) | 1995-05-19 | 1995-05-19 | Ammonia decomposition catalyst and ammonia decomposition method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08309188A true JPH08309188A (en) | 1996-11-26 |
Family
ID=14800281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7120999A Pending JPH08309188A (en) | 1995-05-19 | 1995-05-19 | Ammonia decomposition catalyst and ammonia decomposition method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08309188A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009545437A (en) * | 2006-08-01 | 2009-12-24 | コーメテック， インコーポレイテッド | Compositions and methods for exhaust gas treatment |
| KR101329828B1 (en) * | 2011-05-16 | 2013-11-14 | 주식회사 씨비비 | A tungsten/titania-based catalyst and a method of preparing the same |
| JP2016531736A (en) * | 2013-07-26 | 2016-10-13 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーＪｏｈｎｓｏｎ Ｍａｔｔｈｅｙ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ | Tungsten / titania oxidation catalyst |
| KR20200033024A (en) * | 2018-09-19 | 2020-03-27 | 주식회사 씨비비 | Selective oxidation catalyst for converting gaseous ammonia into nitrogen and its production method |
| CN116586077A (en) * | 2023-06-19 | 2023-08-15 | 福大紫金氢能科技股份有限公司 | Monolithic catalyst and preparation method and application thereof |
-
1995
- 1995-05-19 JP JP7120999A patent/JPH08309188A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009545437A (en) * | 2006-08-01 | 2009-12-24 | コーメテック， インコーポレイテッド | Compositions and methods for exhaust gas treatment |
| KR101329828B1 (en) * | 2011-05-16 | 2013-11-14 | 주식회사 씨비비 | A tungsten/titania-based catalyst and a method of preparing the same |
| JP2016531736A (en) * | 2013-07-26 | 2016-10-13 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーＪｏｈｎｓｏｎ Ｍａｔｔｈｅｙ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ | Tungsten / titania oxidation catalyst |
| KR20200033024A (en) * | 2018-09-19 | 2020-03-27 | 주식회사 씨비비 | Selective oxidation catalyst for converting gaseous ammonia into nitrogen and its production method |
| CN116586077A (en) * | 2023-06-19 | 2023-08-15 | 福大紫金氢能科技股份有限公司 | Monolithic catalyst and preparation method and application thereof |
| CN116586077B (en) * | 2023-06-19 | 2023-11-17 | 福大紫金氢能科技股份有限公司 | Monolithic catalyst and preparation method and application thereof |
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