JPS62114659A - Preparation of catalyst - Google Patents
Preparation of catalystInfo
- Publication number
- JPS62114659A JPS62114659A JP25268285A JP25268285A JPS62114659A JP S62114659 A JPS62114659 A JP S62114659A JP 25268285 A JP25268285 A JP 25268285A JP 25268285 A JP25268285 A JP 25268285A JP S62114659 A JPS62114659 A JP S62114659A
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- JP
- Japan
- Prior art keywords
- solvent
- active component
- carrier
- catalyst
- catalytically active
- Prior art date
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Abstract
Description
【発明の詳細な説明】
「産業上の利用分野］
本発明は溶液含浸法による触媒の’Ｅｌ造方法に関し、
４丁しくは溶液含浸法により多孔質の耐大性無機酸化物
担体に触媒活性成′ｌ）を担持して触媒を製ｊ貫する際
、絞首乾燥や加熱乾燥刃の乾燥工程にａ３（）る触媒活
性成分の１且体内の移動を抑制する触媒の製造方法に関
する。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a method for producing 'El' of a catalyst by a solution impregnation method.
When manufacturing a catalyst by supporting a catalytically active component (1) on a porous, large-resistant inorganic oxide carrier using a solution impregnation method, a3 () is used in the drying process of hanging drying or heating drying blade. The present invention relates to a method for producing a catalyst that suppresses the movement of one of the catalytically active components within the body.
し従来の技術］
工業用触媒は数Ｉ楯〜１ｃｍ程度の径を右する粒子状あ
るいは円柱状のものが多く、一般に担体への触媒活性物
質の担持は溶３ル含浸法が用いられる。BACKGROUND OF THE INVENTION Industrial catalysts are often in the form of particles or cylinders with a diameter of about 1 cm to 1 cm, and generally a molten impregnation method is used to support a catalytically active substance on a carrier.
溶液含浸法とは活性成分を溶媒に溶かし、その溶液に担
体を浸漬し、所定時間後に取り出して、乾燥後焼成する
方法である。The solution impregnation method is a method in which an active ingredient is dissolved in a solvent, a carrier is immersed in the solution, taken out after a predetermined period of time, dried, and then fired.
一般に触媒担体内の触媒活性成分力イ１ｉ ＋ま均一で
ある場合が多いが、一方では触媒内部のみに触媒活性成
分を担持する等して触媒の特性を向上すろ試みもある。In general, the catalytic active components within the catalyst carrier are often uniform, but there are also attempts to improve the characteristics of the catalyst by, for example, supporting the catalytically active components only inside the catalyst.
しかしながら溶液含浸法で触媒活性成分を担持した場合
、その溶媒除去づ−なりら乾燥工程において触媒活性成
分が溶媒とともに移動するため、均一に分布さＶようと
した場合でも１ｒ！体の外表付近に偏る前向がある。ざ
らに触媒活性成分の澗■α分イロを意図的に変化させる
場合、乾燥工程にＪ５ける濶度分侑の乱れ（、表大きな
問題である。However, when a catalytically active component is supported by a solution impregnation method, the catalytically active component moves together with the solvent during the drying process when the solvent is removed. There is an anterior orientation that is biased towards the outer surface of the body. When intentionally changing the ratio of the catalytically active component, it is a big problem that the ratio of the ratio of the catalytic active component to J5 is disturbed during the drying process.
従って、１ス上の問題を解決するために種々の研究が行
われていた。例えば、触媒活性成分を強く１［１体に固
定してから乾燥を行う方法（Ｃｈｅｎ＋。Therefore, various studies have been conducted to solve the above problems. For example, a method in which the catalytically active component is strongly fixed in one form and then dried (Chen+).
ｌ ｅｔ（、第１１６５頁、１９８２年〉、粘度調整剤
を添加して、溶媒の拡散過程を改良する方法（Ｍ。et (, p. 1165, 1982), Method for improving the solvent diffusion process by adding a viscosity modifier (M.
Ｋｏｔｔｅｒ 、 ｌ 、 Ｒ１ｅｋｅｒｔ、Ｐ ｒｅ
ｐ、 Ｃａｔａｌ、 ｌ ）等がある。Kotter, L., R1ekert, Pre.
p, Catal, l), etc.
［発明が解決しようとする問題点］
しかしなが・ら、これら従来の技術においては、前者は
触媒活性成分が限られ、一般的ではない。[Problems to be Solved by the Invention] However, in these conventional techniques, the catalytically active components of the former are limited and are not common.
また後者は添加する粘度調整剤が触媒内に残留するため
、除去する工程が必要である。In addition, in the latter case, since the viscosity modifier added remains in the catalyst, a step of removing it is necessary.
本発明は、上述の問題点に鑑みなされたもので、溶液含
浸法で触媒を製造する方法において、担体に含浸させた
触媒活性成分が乾燥工程において担体内を移動すること
を抑制する触媒の製造方法を提供することを目的とする
。The present invention has been made in view of the above-mentioned problems, and is used to produce a catalyst that suppresses movement of the catalytically active component impregnated into the carrier during the drying process in a method of producing a catalyst using a solution impregnation method. The purpose is to provide a method.
［問題点を解決するための手段および作用ｊ本発明者ら
は航記の問題点を解決するために鋭意検討を行った結果
、含浸後のｌｆ１体内の溶媒を活性成分が溶解しない溶
媒に置換することで、乾燥工程において活性成分の移動
を抑制することを知見し本発明を完成させるに至った。[Means and effects for solving the problem j As a result of intensive studies by the present inventors to solve the navigation problem, the solvent in the lf1 body after impregnation was replaced with a solvent in which the active ingredient does not dissolve. The present inventors have discovered that the movement of active ingredients can be suppressed in the drying process by doing so, and have completed the present invention.
すなわら本発明は、多孔質の耐火性無機酸化物担体に触
媒活性成分を溶液含浸法によりｉｎ持ザる触媒の製造方
法において、
該触媒活性成分を溶解した溶媒Ａに該担体を浸漬した後
取り出し、次いで該触媒活性成分の溶解度が１０ｇ／）
以下で、かつ溶媒Ａと相溶性のある溶媒Ｂ中に浸漬した
後溶媒Ｂを除去して、該触媒活性成分を該担体に担持す
ることを特徴とする触媒の製造方法である。That is, the present invention provides a method for producing a catalyst in which a porous refractory inorganic oxide carrier is impregnated with a catalytically active component by a solution impregnation method, which comprises immersing the carrier in a solvent A in which the catalytically active component is dissolved. After removal, the solubility of the catalytically active component is 10 g/)
The method for producing a catalyst described below is characterized in that the catalyst is immersed in a solvent B that is compatible with the solvent A, and then the solvent B is removed to support the catalytically active component on the carrier.
本発明でいう担体は、多孔質の耐火性無機酸化物であり
、触媒用担体として用いられるものであれば特に制限さ
れない。一般に周１！１１律表の第■族、第１Ｌあるい
は第１ｖ族の元素の中から選ばれる少なくとも１種の元
素の酸化物を挙げることができる。特にシリカ、アルミ
ナ、マグネシア、ジルコニア、ドリア、ボリア、ストロ
ンチアおよびハフニア等の酸化物の少なくとも１種が好
ましく使用できる。The carrier referred to in the present invention is a porous refractory inorganic oxide, and is not particularly limited as long as it can be used as a catalyst carrier. In general, oxides of at least one element selected from the elements of Group 1, Group 1L, or Group 1V of the 111 Table of Contents can be mentioned. In particular, at least one of oxides such as silica, alumina, magnesia, zirconia, doria, boria, strontia, and hafnia can be preferably used.
この担体の粒子の大きさは一般に直径０．１〜１０ｍで
あり、押し出したときは一般に０．３〜１０ｍ＋で、球
状の場合には０．１〜５閤のものが好ましい。The particle size of this carrier is generally 0.1 to 10 m in diameter, generally 0.3 to 10 m+ when extruded, and preferably 0.1 to 5 m in diameter when spherical.
また一般に１１体の表面積は約１００況／ｇ以上、平均
細孔直径は約２０Å以上、細孔容積は０．４ｃｃ／りの
ものが好ましい。In general, it is preferable that the surface area of the 11 particles is about 100 cm/g or more, the average pore diameter is about 20 angstroms or more, and the pore volume is 0.4 cc/g.
本発明でいう触媒活性成分とは触媒作用を示すしのであ
れば特に限定されるものではない。一般に触媒活性成分
としては、周期律表第１Ｂ族、第１ＩＢ厄、第ＶＢ族、
第ＶＩ Ｂ族および第■族の金属の中から選ばれる少な
くととも１種の金属元素あるいはイの化合物が挙げられ
、例えば好ましくはＰｔ 、Ｐｂ 、Ｒｕ 、Ｃｏ 、
Ｎｉ 、Ｍｏ 、Ｗ、Ｖ、Ｃｕおよび７ｎからなる群よ
り選択される。金属化合物としてはこれらの金属の酸化
物、水酸化物、塩化物、硫化物、炭酸塩、硫酸塩、ｒ＋
ｒ１Ｍ塩および有ＩＭ酸塩が挙げられる。The catalytically active component as used in the present invention is not particularly limited as long as it exhibits catalytic action. In general, catalytic active components include Group 1B, Group 1IB, Group VB of the periodic table,
Examples include at least one metal element selected from Group VI B and Group II metals or compounds of Group A, such as preferably Pt, Pb, Ru, Co,
Selected from the group consisting of Ni, Mo, W, V, Cu and 7n. Metal compounds include oxides, hydroxides, chlorides, sulfides, carbonates, sulfates, and r+ of these metals.
Includes r1M salts and IM salts.
触媒活性成分の担体への担持出は一般に金属酸化物とし
て計篩し、約０．０１〜約３０重量％、好ましくは約０
．１〜約２０重ω％の範囲である。The catalytically active component is generally sieved as a metal oxide, and the amount of the catalytically active component is about 0.01 to about 30% by weight, preferably about 0.
．． It is in the range of 1 to about 20 weight ω%.
触媒活性成分は金属元素態あるいは酸化動態のような化
合物懇で触媒中に存在しうる。The catalytically active component may be present in the catalyst in the form of a metal element or as a compound such as oxidative kinetics.
本発明でいう溶媒△とは触媒活性成分を溶解できるもの
であれば特に制限されるものではない。The solvent Δ in the present invention is not particularly limited as long as it can dissolve the catalytically active component.
例えば触媒活性成分が金属塩の場合は一般に水等がりＹ
ましく用いられ、金属有機Ｍ塩の場合は一般に炭素数１
〜６のアルコール、例えばメタノール、■タノール、プ
ロパツール、ブタノール、アミルアルコールおよびへ主
シルアルコール、アセトン、ジオキサン、ベンげン、ト
ルエン等の有機溶媒が好ましく用いられる。For example, if the catalytic active component is a metal salt, generally water
In the case of metal organic M salts, the number of carbon atoms is generally 1.
-6 alcohols, such as organic solvents such as methanol, ethanol, propatool, butanol, amyl alcohol and hemyl alcohol, acetone, dioxane, benzene, and toluene, are preferably used.
本発明でいう溶媒Ｂとは触媒活性成分の溶解度が１０す
／１以下、好ましくは５（Ｊ／ｊ以下で、かつ溶媒Δと
相溶性のある溶媒であれば特に限定されるものではない
。溶媒Ｂとしては溶媒へと同様の溶媒を用いることがで
きる。しかしながら溶媒Ａと溶媒Ｂの組合せは触媒活性
成分によって異なる。例えば触媒活性成分が金属塩の揚
台、溶ｆｉＡとして水を用いたならば、溶媒Ｂとしては
活性成分の溶解度が１０Ｑ／Ｊ以下でかつ溶媒Ａと相溶
性のあるアルコール類やアセトン等が用いられる。The solvent B used in the present invention is not particularly limited as long as it has a solubility of the catalytically active component of 10 solubility or less, preferably 5 (J/j or less), and is compatible with the solvent Δ. The same solvent as the solvent can be used as the solvent B. However, the combination of solvent A and solvent B differs depending on the catalytically active component. For example, if the catalytically active component is a platform for a metal salt, and water is used as the solution fiA. For example, as the solvent B, alcohols, acetone, etc., in which the solubility of the active ingredient is 10 Q/J or less and are compatible with the solvent A, are used.
この場合溶媒Ａと同様の水は用いられない。ここで言う
溶解度とは、溶媒１ノ中に溶解できる触媒活性成分の重
聞（ａ ）を表わす。In this case, water similar to solvent A is not used. The solubility herein refers to the weight (a) of the catalytically active component that can be dissolved in the solvent.
また、本発明で言う相溶性のあるとは、２種類の溶媒を
混合した際、両者をどのような割合にしても層分離を起
こさない場合を示す。In addition, the term "compatible" as used in the present invention refers to a case where, when two types of solvents are mixed, no phase separation occurs no matter what the ratio of the two solvents.
次に、本発明の触媒の製造方法について述べる。Next, a method for producing the catalyst of the present invention will be described.
先ず、触媒活性成分を溶解した溶媒Ａに担体を温度Ｏ〜
１００℃で約５分〜１００時間、好ましくは３０分〜２
４時間浸漬し、その後触媒活性成分を含浸した担体を取
り出し、濾紙等で溶媒Ａを除去する。First, the carrier is placed in solvent A in which the catalytically active component is dissolved at a temperature of O~
At 100°C for about 5 minutes to 100 hours, preferably 30 minutes to 2
After soaking for 4 hours, the carrier impregnated with the catalytically active component is taken out and solvent A is removed using filter paper or the like.
次に溶媒活性成分の溶解度が１０ｇ／ノ以下で、かつ溶
媒△と相溶性のある溶媒Ｂ（溶媒Ａとは異なる溶９！１
．＞に温度０〜１００℃で約１分間以上、好ましくは約
１０分間以上浸漬する。この際、必要に応じて撹拌する
ことも可能である。その少溶媒Ｂを除去する。次に溶媒
Ｂを除去した担体を室温で約１〜２４時間放置乾燥した
後、一般に温度約４００〜８００℃で約１〜２４時間焼
成する。なお、焼成前に一般に温度約５０〜１５０℃で
約１〜２４時間で加熱乾燥してもよい。Next, the solubility of the solvent active ingredient is 10 g/no or less, and the solvent B is compatible with the solvent
．． > at a temperature of 0 to 100°C for about 1 minute or more, preferably about 10 minutes or more. At this time, it is also possible to stir if necessary. The minor solvent B is removed. The carrier from which solvent B has been removed is then left to dry at room temperature for about 1 to 24 hours, and then calcined at a temperature of about 400 to 800° C. for about 1 to 24 hours. In addition, before firing, it may be dried by heating, generally at a temperature of about 50 to 150° C. for about 1 to 24 hours.
本発明において触媒内の触媒活性成分の濃度分布を測定
する方法として、Ｘ線マイクロ分析（ＥＰＭＡ）法を挙
げることができる。触媒を円柱状の場合は外周部に対し
て直角に切断し、球状の場合は球の中心を通って切断す
る。この切断面を前）本のＥＰＭＡにより走査すること
で濃度分布を与える図が得られる。In the present invention, an X-ray microanalysis (EPMA) method can be cited as a method for measuring the concentration distribution of catalytically active components within the catalyst. If the catalyst is cylindrical, cut at right angles to the outer circumference; if spherical, cut through the center of the sphere. By scanning this cut surface with the EPMA of the previous book, a diagram giving the density distribution can be obtained.
本発明の触媒の製造法は、一般に石油類の水素化処理用
のモリブデン、コバルト、ニッケル等を担持した触媒、
炭化水素の転換（改質、水素添加、脱水素、異性化等）
用の白金、パラジウム、イリジウム等を担持した触媒お
よび排出ガス中の一酸化炭素、炭化水素、窒素酸化物等
の浄化用触媒として、白金やパラジウムを担持した触媒
等の製造に有効である。The method for producing the catalyst of the present invention generally includes a catalyst supporting molybdenum, cobalt, nickel, etc. for hydrotreating petroleum.
Hydrocarbon conversion (reforming, hydrogenation, dehydrogenation, isomerization, etc.)
It is effective in the production of catalysts supporting platinum, palladium, iridium, etc., and catalysts for purifying carbon monoxide, hydrocarbons, nitrogen oxides, etc. in exhaust gas.
通常、溶液含浸法による触媒の製造方法において、触媒
活性成分を担体に含浸させた後の放置乾燥あるいは加熱
乾燥等の乾燥工程で、溶媒の蒸発等による移動とともに
、溶媒に溶解している触媒活性成分が担体内を移動する
ことにより、担体内の触媒活性成分の濃度分布に偏りや
乱れが生じるものと考えられる。Normally, in a method for producing a catalyst using the solution impregnation method, during the drying process such as leaving the catalytically active component to be impregnated into the carrier or drying by heating, the catalytic activity dissolved in the solvent is transferred due to evaporation of the solvent, etc. It is thought that the movement of the components within the carrier causes bias or disturbance in the concentration distribution of the catalytically active components within the carrier.
本発明において触媒活性成分の担体内での移動抑制の作
用機構自体は明らかでないが、溶媒Ａが溶媒Ｂに徐々に
置換し、触媒活性成分が担体内に沈着するため乾燥工程
における移動が抑制されるものと考えられる。Although the mechanism of action for suppressing the movement of the catalytically active component within the carrier in the present invention is not clear, solvent A is gradually replaced by solvent B, and the catalytically active component is deposited within the carrier, so movement during the drying process is suppressed. It is considered that
「実施例」
以下、実施例、比較例Ｊ３よび分析試験に基づき本発明
を具体的に説明する。"Example" Hereinafter, the present invention will be specifically described based on Examples, Comparative Example J3, and analytical tests.
実 施 例 １
パラモリブデン酸アンモニウム水溶液（モリブデン濃度
８ｗｔ％）に、１ｍｍのアルミナ押し出し成型担体を３
１１１間浸漬した。それを取り出し、濾紙上で水分を取
り、アセトン中に３０分浸漬した。アセトンは脱水剤を
通して循環した。取り出した触媒を室温で３０分数百後
、５５０℃で３時間焼成した。Example 1 Three 1 mm extruded alumina carriers were added to an aqueous ammonium paramolybdate solution (molybdenum concentration 8 wt%).
It was immersed for 111 hours. It was taken out, drained on filter paper, and immersed in acetone for 30 minutes. Acetone was circulated through the dehydrator. After several hundred minutes at room temperature, the taken out catalyst was calcined at 550° C. for 3 hours.
これを触媒Ａとした。This was designated as catalyst A.
匿−」Ｌ−皿一二し
実施例１と同様の触媒活性成分および担体を用いて行な
った。該担体を蹟触媒活性成分含有溶液に３［１；￥間
浸漬した後取り出し、濾紙上で水分を取った。それを室
温より徐々に昇温して１２０℃で２時間乾燥し、５５０
℃で３時間焼成した。これを触媒Ｂとした。The experiment was carried out using the same catalytically active components and carrier as in Example 1. The carrier was immersed in a solution containing a catalytically active component for 3 minutes, then taken out, and the water was removed on a filter paper. The temperature was gradually raised from room temperature and dried at 120°C for 2 hours.
It was baked at ℃ for 3 hours. This was designated as catalyst B.
実 施 例 ２
塩化コバルトを含む０．１規定ＨＣＪ溶′ａ（コバルト
濃度４ｆｆ１１％）に実施例１で用いたアルミナ担体を
３０分浸漬した後、取り出し、ａａ紙上で水分を取り、
アセトン中に３０分浸漬した。アセトンは脱水剤を通し
て循環した。取り出した触媒を室温で３０分放置後、５
５０℃で３時間焼成した。これを触媒Ｃとした。Example 2 The alumina support used in Example 1 was immersed in a 0.1N HCJ solution containing cobalt chloride (cobalt concentration 4ff11%) for 30 minutes, then taken out and drained on AA paper.
Soaked in acetone for 30 minutes. Acetone was circulated through the dehydrator. After leaving the removed catalyst at room temperature for 30 minutes,
It was baked at 50°C for 3 hours. This was designated as catalyst C.
比 較 例 ２
実施例２と同様の触媒活性成分および担体を用いて行な
った。該担体を該触媒活性成分含有溶液に３０分浸油し
た後取り出し、１Ｍ紙上で水分を取った。それをｖ温ま
り徐々にｊＶ濡して １２０℃で２時間乾燥し、５５０
℃で３時間焼成した。これを触媒りとした。Comparative Example 2 Comparison was conducted using the same catalytically active component and carrier as in Example 2. The carrier was immersed in the catalytically active component-containing solution for 30 minutes, then taken out, and the moisture was removed on 1M paper. Warm it up, gradually wet it with water, dry it at 120℃ for 2 hours, and heat it to 550℃.
It was baked at ℃ for 3 hours. This was used as a catalyst.
分 析 試 験
実施例１〜２および比較例１〜２で得られた触媒Ａ〜Ｄ
の金属担持量を原子吸光法で測定した。Analysis Test Catalysts A to D obtained in Test Examples 1 to 2 and Comparative Examples 1 to 2
The amount of metal supported was measured by atomic absorption spectrometry.
その結果を第１表に示す。The results are shown in Table 1.
さらに、これらの触媒Ａ−ＤをＥＰＭＡによって線分析
した。その結果を第１〜４図に示す。Additionally, these catalysts A-D were line analyzed by EPMA. The results are shown in Figures 1-4.
第１表 金属分析結果
第１表に示されるように、従来の方法と同様に本発明の
方法によっても、（ｑられる触媒の金属担持量は変わら
ないことが判る。Table 1 Metal Analysis Results As shown in Table 1, it can be seen that the amount of metal supported on the catalyst (q) does not change by the method of the present invention as well as by the conventional method.
次に、触媒活性成分を担体の外表から内部にまで均一に
分布した状態に制御する場合、本発明の方法より１！７
られた触媒Ａ（実施例１）では第１図に示すように？ｉ
！ｌｌ性成分（ＭＯ）は担体の外表から内部にまで均一
に分布しているが、従来の方法によって得られた触媒Ｂ
（比較例１）では第２図に示づように乾燥二［程で活性
成分の移動があり、活性成分〈ＭＯ）は均一に分布しな
いことが判る。Next, when controlling the catalytic active component to be uniformly distributed from the outer surface to the inside of the carrier, the method of the present invention is 1!7
In the case of catalyst A (Example 1), as shown in FIG. i
! Although the ll component (MO) is uniformly distributed from the outer surface to the inside of the carrier, catalyst B obtained by the conventional method
In Comparative Example 1, as shown in FIG. 2, there was movement of the active ingredient during the second drying period, and it was found that the active ingredient (MO) was not uniformly distributed.
また、触媒活性成分を担体の外表から内部にいくほど高
濃度になるように制御する場合、本発明の方法で１けら
れた触媒Ｃ（実施例２）では第３図に示すように活性成
分（Ｃｏ）は担体の内部にいくほど高い濃度になってい
るが、従来の方法で１９られた触媒Ｄ（比較！ＩＡ２
＞では第４図に示すように、乾燥工程で活性成分の移動
があり活性成分（Ｃｏ ）は担体の内部にいくほど高い
濃度分布にならず、逆に外表にいくほど高い濃度分布に
（＾ることが判る。In addition, when controlling the concentration of the catalytic active component so that it becomes higher in concentration from the outer surface of the carrier toward the inside, in catalyst C (Example 2), which was removed by the method of the present invention, the active component was The concentration of (Co) becomes higher as it goes inside the carrier, but catalyst D (comparison! IA2
> As shown in Figure 4, the active ingredient (Co) moves during the drying process, and the active ingredient (Co) does not have a high concentration distribution as it goes inside the carrier, but on the contrary, the concentration distribution increases as it goes to the outside surface (^ It turns out that
［発明の効果］
以上説明のごとく、多孔質の耐火性無機酸化物７８体に
触媒活性成分を溶液含浸法により担持するに際しで、触
媒活性成分を溶解した溶媒Ａを触媒活性成分の溶解度が
１０（１／Ｊ以下で、かつ溶媒Ａと相溶性のある溶媒Ｂ
Ｔ：置換する本発明の触媒の製造方法は、乾燥工程にお
ける触媒活性成分の担体での移動を抑制することができ
る。[Effects of the Invention] As explained above, when supporting a catalytically active component on 78 porous refractory inorganic oxides by a solution impregnation method, the solvent A in which the catalytically active component was dissolved was used when the solubility of the catalytically active component was 10. (Solvent B that is 1/J or less and is compatible with solvent A)
T: The method for producing a catalyst of the present invention in which substitution is performed can suppress the movement of the catalytically active component on the carrier during the drying step.
第１〜４図は、実施〃１および比較例で得られた触媒へ
〜ＤのＸ線マイクロ分析（ＥＰＭＡ）による金属（Ｍｏ
、 Ｃｏ ’）の濃度分布をそれぞれ示す図。Figures 1 to 4 show the results of X-ray microanalysis (EPMA) of metals (Mo
, Co′) respectively.
Claims (1)
液含浸法により担持する触媒の製造方法において、 該触媒活性成分を溶解した溶媒Ａに該担体を浸漬した後
取り出し、次いで該触媒活性成分の溶解度が１０ｇ／ｌ
以下で、かつ溶媒Ａと相溶性のある溶媒Ｂ中に浸漬した
後溶媒Ｂを除去して、該触媒活性成分を該担体に担持す
ることを特徴とする触媒の製造方法。[Claims] 1. A method for producing a catalyst in which a porous refractory inorganic oxide carrier is supported with a catalytically active component by a solution impregnation method, after immersing the carrier in a solvent A in which the catalytically active component is dissolved. Then, the solubility of the catalytically active component is 10 g/l.
A method for producing a catalyst, characterized in that the catalyst active component is supported on the carrier by immersing the catalyst in a solvent B that is compatible with the solvent A, and then removing the solvent B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25268285A JPS62114659A (en) | 1985-11-13 | 1985-11-13 | Preparation of catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25268285A JPS62114659A (en) | 1985-11-13 | 1985-11-13 | Preparation of catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62114659A true JPS62114659A (en) | 1987-05-26 |
| JPH0480744B2 JPH0480744B2 (en) | 1992-12-21 |
Family
ID=17240773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25268285A Granted JPS62114659A (en) | 1985-11-13 | 1985-11-13 | Preparation of catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62114659A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286698A (en) * | 2007-05-18 | 2008-11-27 | Toyota Motor Corp | Analytical method for trace amount of metal |
-
1985
- 1985-11-13 JP JP25268285A patent/JPS62114659A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286698A (en) * | 2007-05-18 | 2008-11-27 | Toyota Motor Corp | Analytical method for trace amount of metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0480744B2 (en) | 1992-12-21 |
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