JPS6130818B2 - - Google Patents
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- Publication number
- JPS6130818B2 JPS6130818B2 JP691879A JP691879A JPS6130818B2 JP S6130818 B2 JPS6130818 B2 JP S6130818B2 JP 691879 A JP691879 A JP 691879A JP 691879 A JP691879 A JP 691879A JP S6130818 B2 JPS6130818 B2 JP S6130818B2
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- platinum
- nitric acid
- catalyst
- supported
- 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.)
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 69
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 29
- 239000003054 catalyst Substances 0.000 claims description 29
- 229910017604 nitric acid Inorganic materials 0.000 claims description 29
- 239000007864 aqueous solution Substances 0.000 claims description 25
- 239000012784 inorganic fiber Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 3
- FCUFAHVIZMPWGD-UHFFFAOYSA-N [O-][N+](=O)[Pt](N)(N)[N+]([O-])=O Chemical compound [O-][N+](=O)[Pt](N)(N)[N+]([O-])=O FCUFAHVIZMPWGD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000003058 platinum compounds Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- BASFCYQUMIYNBI-BKFZFHPZSA-N platinum-200 Chemical compound [200Pt] BASFCYQUMIYNBI-BKFZFHPZSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】
本発明は、燃焼器用触媒、特に都市ガスや揮発
性燃料に含まれるトルエンなどを完全に酸化して
燃焼する為の無機質繊維担体上に白金粒子を均一
微細に分散し担持させた燃焼器用触媒の製造方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is a combustor catalyst, in particular, in which platinum particles are uniformly and finely dispersed on an inorganic fiber carrier for completely oxidizing and burning toluene, etc. contained in city gas and volatile fuels. The present invention relates to a method for manufacturing a supported combustor catalyst.
従来から都市ガスや揮発性燃料燃焼用の触媒と
しては、白金担持触媒が広く利用されており、特
に近年は無機質繊維担体上に高触媒性能の白金粒
子を最小限に担持させる白金担持触媒の開発がな
されている。 Supported platinum catalysts have traditionally been widely used as catalysts for combustion of city gas and volatile fuels, and in recent years in particular, the development of supported platinum catalysts in which a minimum amount of platinum particles with high catalytic performance are supported on an inorganic fiber carrier has been developed. is being done.
白金塩含有浸液としては、H2PtCl6（塩化白金
酸）、や（NH3）2（NO2）2Pt（ジニトロジアミノ白
金）が知られている。然し乍ら、H2PtCl6は最終
製品中に塩素分を残すので好ましくなく、
（NH3）2（NO2）2Ptは微粉末状であり、水や硝酸に
は常温で殆んど溶解しない。従つて（NH3）2
（NO2）2Ptの場合、白金金属の担持量を多くする
為には、水又は硝酸溶液中にコロイド状に均一に
分散せざるを得なかつた。 As platinum salt-containing immersion liquids, H 2 PtCl 6 (chloroplatinic acid) and (NH 3 ) 2 (NO 2 ) 2 Pt (dinitrodiaminoplatinum) are known. However, H 2 PtCl 6 is undesirable because it leaves chlorine in the final product.
(NH 3 ) 2 (NO 2 ) 2 Pt is in the form of a fine powder and hardly dissolves in water or nitric acid at room temperature. Therefore (NH 3 ) 2
In the case of (NO 2 ) 2 Pt, in order to increase the amount of platinum metal supported, it was necessary to uniformly disperse it in colloidal form in water or nitric acid solution.
本発明はかかる問題点を解決すべくなされたも
のであり、無機質繊維担体上に白金粒子を均一微
細に担持した低温域高活性の燃焼器用触媒の製造
方法を提供せんとするものである。 The present invention has been made to solve these problems, and aims to provide a method for producing a catalyst for a combustor that is highly active in a low temperature range and has platinum particles uniformly and finely supported on an inorganic fiber carrier.
本発明による燃焼器用触媒の製造方法は、
（NH3）2（NO2）2PtをHNO3として250ｇ／〜450
ｇ／を含む硝酸水溶液に添加した混合液（白金
金属として250ｇ／〜450ｇ／を含む）を、60
℃〜100℃の温度範囲で溶解し且つ熟成し、次に
熟成し終えた後調整した水溶液に無機質繊維担体
を浸漬し、次いで前記水溶液の含浸された担体を
還元させることを特徴とするものである。 The method for producing a combustor catalyst according to the present invention includes:
(NH 3 ) 2 (NO 2 ) 2 Pt as HNO 3 250g/~450
A mixed solution (containing 250 g/~450 g/ as platinum metal) added to a nitric acid aqueous solution containing 60 g/
The inorganic fiber carrier is dissolved and aged in a temperature range of 100°C to 100°C, and then, after aging, the inorganic fiber carrier is immersed in the prepared aqueous solution, and then the carrier impregnated with the aqueous solution is reduced. be.
次に本発明の触媒の製造方法に於いて、
（NH3）2（NO2）2PtをHNO3として250ｇ／〜450
ｇ／を含む硝酸水溶液に添加した混合液（白金
金属として250ｇ／〜450ｇ／を含む）を、60
℃〜100℃の温度範囲で溶解し且つ熟成する理由
について詳述する。純粋な（NH3）2（NO2）2Ptは
無色の粉末であるが、通常市販されているものは
極く微量の塩素イオンが存在する為淡黄色で、こ
の粉末を硝酸水溶液に添加すると大部分粉末状態
で液中に分散する。そこで本発明者等はこの分散
液中の（NH3）2（NO2）2Ptを溶解すべく加熱して
いつたところ、60℃の温度から溶解し始めるこ
と、つまり60℃の温度が溶解の反応開始温度であ
ることを知見した。この溶解反応は次の式による
ものと思われる。 Next, in the method for producing the catalyst of the present invention,
(NH 3 ) 2 (NO 2 ) 2 Pt as HNO 3 250g/~450
A mixed solution (containing 250 g/~450 g/ as platinum metal) added to a nitric acid aqueous solution containing 60 g/
The reason why it dissolves and matures in the temperature range of 100°C to 100°C will be explained in detail. Pure (NH 3 ) 2 (NO 2 ) 2 Pt is a colorless powder, but the commercially available version is pale yellow due to the presence of very small amounts of chlorine ions, and when this powder is added to an aqueous nitric acid solution, Most of it is dispersed in the liquid in powder form. Therefore, the present inventors heated the (NH 3 ) 2 (NO 2 ) 2 Pt in this dispersion to dissolve it, and found that it started to dissolve at a temperature of 60°C. It was found that this was the reaction initiation temperature. This dissolution reaction seems to be based on the following equation.
（NH3）2（NO2）2Pt＋2HNO3→
（NH3）2（NO2）2Pt・NO・NO3＋H2O＋〔Ｏ〕
そして反応温度が100℃をを超えると、上記化
合物の分解が生じ水溶液中に白金化合物の沈澱が
生じる。(NH 3 ) 2 (NO 2 ) 2 Pt+2HNO 3 → (NH 3 ) 2 (NO 2 ) 2 Pt・NO・NO 3 +H 2 O+ [O] When the reaction temperature exceeds 100°C, the above compound decomposes. occurs and a platinum compound precipitates in the aqueous solution.
従つて前記分散液中の（NH3）2（NO2）2Ptを溶
解するには60℃〜100℃が良い。 Therefore, in order to dissolve (NH 3 ) 2 (NO 2 ) 2 Pt in the dispersion, the temperature is preferably 60°C to 100°C.
また硝酸水溶液中のHNO3量が極端に多い場合
例えば450ｇ／を超えると、（NH3）2（NO2）2Pt
を添加した際不安定となり、白金化合物の沈澱が
生じる逆にHNO3量が極端に少ない場合、例えば
250ｇ／に満たないと、そのHNO3量に応じた
（NH3）2（NO2）2Ptが前記反応式に従つて溶解する
と思われるが、溶解しきれない（NH3）2
（NO2）2Pt粉末は硝酸水溶液中に残る。従つて硝
酸水溶液中のHNO3量は250ｇ／〜450ｇ／が
良い。 Also, if the amount of HNO3 in the nitric acid aqueous solution is extremely large, for example exceeding 450g/, ( NH3 ) 2 ( NO2 ) 2Pt
When HNO3 is added, it becomes unstable and the platinum compound precipitates.On the other hand, if the amount of HNO3 is extremely small, e.g.
If the amount is less than 250 g/HNO 3 , (NH 3 ) 2 (NO 2 ) 2 Pt corresponding to the amount of HNO 3 will be dissolved according to the above reaction formula, but (NH 3 ) 2 will not be completely dissolved.
(NO 2 ) 2 Pt powder remains in the nitric acid aqueous solution. Therefore, the amount of HNO3 in the nitric acid aqueous solution is preferably 250g/~450g/.
（NH3）2（NO2）2Ptが硝酸水溶液中に完全に溶
解すると、この溶液は適切な反応温度内で熟成さ
れる。この際、溶液の色は黄淡色から赤褐色、赤
褐色から更に濃い赤褐色へと変化していくので熟
成されているのが判る。 Once the (NH 3 ) 2 (NO 2 ) 2 Pt is completely dissolved in the aqueous nitric acid solution, the solution is aged within the appropriate reaction temperature. At this time, the color of the solution changes from pale yellow to reddish-brown, and from reddish-brown to even deeper reddish-brown, which indicates that the solution has been ripened.
熟成は次の式によるものと思われる。 Ripening seems to be based on the following formula.
（NH3）2（NO2）2Pt・NO・NO3＋2HNO3→
（NH3）2（NO2）4Pt・NO・NO3＋H2O＋〔Ｏ〕 (1)
又は
（NH3）2（NO2）2Pt・NO・NO3＋2HNO3
→（NH3）2（NO2）6Pt＋H2O＋〔Ｏ〕 (2)
然してこの熟成に於いて、最初の（NH3）2
（NO2）2Ptの濃度が適切でないと無機質繊維担
体、例えばアルミナ，アルミナーシリカ，ガラス
繊維，アスベスト等の繊維状担体に担持した際、
白金の分散が悪く、燃焼器用触媒としては不十分
である。即ち、（NH3）2（NO2）2Ptの濃度が白金金
属として450ｇ／を超えていると、担体に担持
して還元した際、白金粒子が凝集して巨大化す
る。また逆に白金金属として250ｇ／に満たな
いと、担体に担持して還元した際、微細な白金粒
子が偏つて分散する。従つて白金金属として250
ｇ／〜450ｇ／を含む（NH3）2（NO2）2Ptなら
ば適度な熟成時間、例えば白金金属として300
ｇ／を含む（NH3）2（NO2）2Ptの場合温度80℃
で９時間〜15時間あれば十分熟成できる。そして
十分熟成し終えた液は担持する白金金属の量に応
じて適宜水又は硝酸水溶液及び添加剤等で希釈し
て無機質繊維担体に担持することができるもので
ある。(NH 3 ) 2 (NO 2 ) 2 Pt・NO・NO 3 +2HNO 3 → (NH 3 ) 2 (NO 2 ) 4 Pt・NO・NO 3 +H 2 O+ [O] (1) or (NH 3 ) 2 (NO 2 ) 2 Pt・NO・NO 3 +2HNO 3 → (NH 3 ) 2 (NO 2 ) 6 Pt + H 2 O + [O] (2) However, in this ripening, the initial (NH 3 ) 2
(NO 2 ) 2 If the concentration of Pt is not appropriate, when supported on an inorganic fiber carrier such as alumina, alumina-silica, glass fiber, asbestos, etc.,
The dispersion of platinum is poor, making it unsatisfactory as a combustor catalyst. That is, if the concentration of (NH 3 ) 2 (NO 2 ) 2 Pt exceeds 450 g/Pt as platinum metal, the platinum particles will aggregate and become huge when supported on a carrier and reduced. On the other hand, if the amount of platinum metal is less than 250 g, fine platinum particles will be unevenly dispersed when supported on a carrier and reduced. Therefore, 250 as platinum metal
If it is (NH 3 ) 2 (NO 2 ) 2 Pt containing ~450 g/g/~450 g/, a suitable aging time is required, e.g. 300 g/
Temperature 80℃ for (NH 3 ) 2 (NO 2 ) 2 Pt containing g/
9 to 15 hours is sufficient for aging. The sufficiently aged solution can be diluted with water or an aqueous nitric acid solution, additives, etc. as appropriate depending on the amount of platinum metal to be supported, and then supported on an inorganic fiber carrier.
以下に本発明の実施例及び比較例について述べ
る。 Examples and comparative examples of the present invention will be described below.
〔実施例 １〕
（NH3）2（NO2）2Pt粉末（白金金属として300
ｇ）をHNO3量300ｇ入つた硝酸水溶液に添加し
て１にした後、85℃の温度で溶解した後、85℃
で10時間熟成し、次に熟成し終えた水溶液を白金
金属として50ｇ／、HNO3量として100ｇ／
となるように硝酸水溶液で希釈した後この水溶液
に活性アルミナ付着繊維状アルミナーシリカ担体
を浸漬し、次いで前記水溶液の含浸された担体を
還元して白金担持の燃焼器用触媒を得た。[Example 1] (NH 3 ) 2 (NO 2 ) 2 Pt powder (300% as platinum metal)
g) was added to a nitric acid aqueous solution containing 300 g of HNO 3 to make it 1, then dissolved at a temperature of 85°C, and then heated to 85°C.
The aged aqueous solution was aged for 10 hours, and then the aged aqueous solution was mixed with 50 g of platinum metal and 100 g of HNO3.
After diluting with an aqueous nitric acid solution so that the activated alumina-adhered fibrous alumina-silica carrier was diluted in this aqueous solution, the carrier impregnated with the aqueous solution was then reduced to obtain a platinum-supported combustor catalyst.
〔実施例 ２〕
（NH3）2（NO2）2Pt粉末（白金金属として400
ｇ）をHNO3量400ｇ入つた硝酸水溶液に添加し
て１にした後、70℃の温度で溶解した後65℃で
20時間熟成し、次に熟成し終えた水溶液を白金金
属として20ｇ／HNO3量として200ｇ／とな
るように硝酸水溶液で希釈した後更にアルコール
を100c.c.／添加した後この水溶液を活性アルミ
ナ及びシリカ付着担体に浸漬し、次いで前記水溶
液の含浸された担体を還元して白金担持の燃焼器
用触媒を得た。[Example 2] (NH 3 ) 2 (NO 2 ) 2 Pt powder (400% as platinum metal)
g) was added to a nitric acid aqueous solution containing 400 g of HNO3 to make it 1, then dissolved at a temperature of 70°C, and then heated to 65°C.
After aging for 20 hours, the aged aqueous solution was diluted with a nitric acid aqueous solution to give 20 g of platinum metal/200 g of HNO3 , and then 100 c.c. of alcohol was added, and this aqueous solution was diluted with activated alumina. and a silica-adhered carrier, and then the carrier impregnated with the aqueous solution was reduced to obtain a platinum-supported combustor catalyst.
〔比較例 １〕
（NH3）2（NN2）2Pt粉末（白金金属として300
ｇ）をHNO3量200ｇ入つた１の硝酸水溶液に
添加して、85℃の温度で溶解しようとしたとこ
ろ、完全に溶解することができなかつた。[Comparative Example 1] (NH 3 ) 2 (NN 2 ) 2 Pt powder (300% as platinum metal)
When adding g) to the nitric acid aqueous solution in step 1 containing 200 g of HNO3 and attempting to dissolve it at a temperature of 85°C, it was not possible to completely dissolve it.
〔比較例 ２〕
（NH3）2（NO2）2Pt粉末（白金金属として400
ｇ）をHNO3量550ｇ入つた１の硝酸水溶液に
添加して、70℃の温度で溶解した後65℃で20時間
熟成したところPt化合物の沈澱が生じた。[Comparative Example 2] (NH 3 ) 2 (NO 2 ) 2 Pt powder (400% as platinum metal)
g) was added to the aqueous nitric acid solution of 1 containing 550 g of HNO3, dissolved at a temperature of 70°C, and then aged at 65°C for 20 hours, resulting in the precipitation of a Pt compound.
〔比較例 ３〕
（NH3）2（NO2）2Pt粉末（白金金属として200
ｇ）をHNO3量350ｇ入つた硝酸水溶液に添加し
て１にした後、実施例１と同様の工程にて白金
担持の燃焼器用触媒を得た。[Comparative Example 3] (NH 3 ) 2 (NO 2 ) 2 Pt powder (200% as platinum metal)
After adding g) to a nitric acid aqueous solution containing 350 g of HNO 3 to make the amount 1, a platinum-supported combustor catalyst was obtained in the same process as in Example 1.
〔比較例 ４〕
（NH3）2（NO2）2Pt粉末（白金金属として500
ｇ）をHNO3量350ｇ入つた硝酸水溶液に添加し
て１にした後、実施例２と同様の工程にて白金
担持の燃焼器用触媒を得た。[Comparative Example 4] (NH 3 ) 2 (NO 2 ) 2 Pt powder (500% as platinum metal)
g) was added to a nitric acid aqueous solution containing 350 g of HNO 3 to make it 1, and the same process as in Example 2 was carried out to obtain a platinum-supported combustor catalyst.
H2PtCl6 ８ｇ／の水溶液を用い、活性アル
ミナ付着繊維状アルミナーシリカ担体を浸漬し、
還元して白金担持の燃焼器用触媒を得た。
Using an aqueous solution of 8 g of H 2 PtCl 6 , the activated alumina-adhered fibrous alumina-silica carrier is immersed,
A platinum-supported combustor catalyst was obtained by reduction.
然して上記実施例１，２比較例３，４及び従来
例で得られた触媒について初期活性試験、即ち触
媒15c.c.を内径30mmのステンレス製反応管に充填
し、トルエン0.1V／Ｏ残り空気からなる混合ガ
スをガスの空間速度30000hr-1で導入し、入口と
出口のトルエンの濃度を測定することによりトル
エンの浄化率95％の時の入口温度を測定する試験
を行つたところ、９回平均で実施例１の触媒は
165℃、実施例２の触媒は170℃、比較例３の触媒
は200℃、比較例４の触媒は185℃、従来例の触媒
は200℃であつた。 However, an initial activity test was carried out on the catalysts obtained in Examples 1, 2, Comparative Examples 3 and 4, and the conventional example. In other words, 15 c.c. of the catalyst was filled in a stainless steel reaction tube with an inner diameter of 30 mm, and toluene and 0.1 V/O of residual air were added. A test was conducted in which the inlet temperature at a toluene purification rate of 95% was measured by introducing a mixed gas consisting of a gas at a gas space velocity of 30,000 hr -1 and measuring the toluene concentration at the inlet and outlet. On average, the catalyst of Example 1 was
The temperature was 165°C, the catalyst of Example 2 was 170°C, the catalyst of Comparative Example 3 was 200°C, the catalyst of Comparative Example 4 was 185°C, and the catalyst of Conventional Example was 200°C.
かように実施例１，２の触媒は初期活性温度が
低いのに対し、比較例３，４及び従来例の触媒は
初期活性―温度が高い。また走査型電子顕微鏡で
白金粒子の分散を調べたところ、実施例１，２の
触媒は均一、微細に分散していたのに対し、比較
例３及び従来例の触媒は偏つた白金粒子の分散が
観察され、比較例４の触媒は白金粒子の凝集が観
察された。 As described above, the catalysts of Examples 1 and 2 have a low initial activation temperature, whereas the catalysts of Comparative Examples 3 and 4 and the conventional example have a high initial activation temperature. Furthermore, when the dispersion of platinum particles was examined using a scanning electron microscope, it was found that the catalysts of Examples 1 and 2 were uniformly and finely dispersed, whereas the catalysts of Comparative Example 3 and the conventional example had platinum particles dispersed unevenly. was observed, and in the catalyst of Comparative Example 4, agglomeration of platinum particles was observed.
以上の説明で判るように本発明の燃焼器用触媒
の製造方法によれば、白金粒子が均一微細に分散
され、低温域での初期活性に優れた白金担持の燃
焼器用触媒を作ることができるという実利的効果
がある。 As can be seen from the above explanation, according to the method for producing a combustor catalyst of the present invention, platinum particles are uniformly and finely dispersed, and a platinum-supported combustor catalyst with excellent initial activity at low temperatures can be produced. It has practical effects.
Claims (1)
〜450ｇ／を含む硝酸水溶液に添加した混合
液（白金金属として250ｇ／〜450ｇ／を含
む）を、60℃〜100℃の温度範囲で溶解し且つ熟
成し、次に熟成し終えた水溶液に無機質繊維担体
を浸漬し、次いで前記水溶液の含浸された無機質
繊維担体を還元することを特徴とする燃焼器用触
媒の製造方法。1 250g of dinitrodiaminoplatinum as nitric acid/
A mixed solution (containing 250g/-450g/ of platinum metal) added to a nitric acid aqueous solution containing ~450g/ is dissolved and aged in a temperature range of 60℃ ~ 100℃, and then an inorganic substance is added to the aged aqueous solution. A method for producing a catalyst for a combustor, which comprises soaking a fiber carrier and then reducing the inorganic fiber carrier impregnated with the aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP691879A JPS5599340A (en) | 1979-01-23 | 1979-01-23 | Production of catalyst for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP691879A JPS5599340A (en) | 1979-01-23 | 1979-01-23 | Production of catalyst for burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5599340A JPS5599340A (en) | 1980-07-29 |
| JPS6130818B2 true JPS6130818B2 (en) | 1986-07-16 |
Family
ID=11651607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP691879A Granted JPS5599340A (en) | 1979-01-23 | 1979-01-23 | Production of catalyst for burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5599340A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676182B1 (en) * | 1991-05-06 | 1994-04-15 | Gaz De France | NON-SELECTIVE OXIDATION CATALYST AND PREPARATION METHOD THEREOF. |
-
1979
- 1979-01-23 JP JP691879A patent/JPS5599340A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5599340A (en) | 1980-07-29 |
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