JP2001029791A - Catalyst carrier and production thereof - Google Patents
Catalyst carrier and production thereofInfo
- Publication number
- JP2001029791A JP2001029791A JP11204009A JP20400999A JP2001029791A JP 2001029791 A JP2001029791 A JP 2001029791A JP 11204009 A JP11204009 A JP 11204009A JP 20400999 A JP20400999 A JP 20400999A JP 2001029791 A JP2001029791 A JP 2001029791A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- alloy
- fibrous
- aluminum nitride
- containing iron
- 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 26
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 37
- 239000000956 alloy Substances 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 10
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 6
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 239000010936 titanium Substances 0.000 claims abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000835 fiber Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052769 Ytterbium Inorganic materials 0.000 abstract 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000011148 porous material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- -1 aluminum compound Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001420 photoelectron spectroscopy Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車等の排ガス
のガス処理等に用いられる触媒担体及びその製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst carrier used for gas treatment of exhaust gas from automobiles and the like, and a method for producing the same.
【０００２】[0002]
【従来の技術】一般にガス処理用の触媒は、ゼオライト
等のセラミックス系多孔質あるいは金属多孔質体等の表
面積の大きな担体に、微粉末状態で担持させて使用され
る。したがって担体に多量の触媒を担持させるために、
担体である多孔質体の孔密度を大きくしたり、触媒を粉
末状物質に担持させた上で担体に担持させる方法が採ら
れている。2. Description of the Related Art In general, a catalyst for gas treatment is used by being supported in a fine powder state on a carrier having a large surface area such as a porous ceramic material such as zeolite or a porous metal material. Therefore, in order to support a large amount of catalyst on the carrier,
A method of increasing the pore density of a porous body as a carrier, or supporting a catalyst on a powdery substance and then supporting the catalyst on a carrier has been adopted.
【０００３】[0003]
【発明が解決しようとする課題】一方ゼオライトなどの
セラミックス系多孔質体は、微細な孔を高密度に有する
ため大きな比表面積が得られるが機械的強度が低く、脆
性材料であるため熱衝撃等の衝撃にも弱いため用途が制
限され、また金属製担体はこのような短所はないが表面
が滑らかなため比表面積が小さく、触媒を多量に担持す
ることができないものである。また粉末冶金法等により
製作した金属多孔質体といえども現在実用化されている
技術では原料粉末の粒子径が数ミクロン以上であり、微
細な孔を高密度に生成させることができないため触媒を
多量に担持させることができなかった。本発明は上記の
問題に鑑みて成されたものであって、比表面積を大きく
して触媒の担持量を多くできるとともに機械的な強度及
び耐衝撃性に優れた触媒担体及びその製造方法を提供す
ることを目的とする。On the other hand, a ceramic-based porous material such as zeolite has a large specific surface area because it has fine pores at a high density, but has a low mechanical strength and is a brittle material. Although the metal carrier has no such disadvantages, it has a small surface due to its smooth surface, and cannot support a large amount of catalyst. In addition, even if it is a metal porous body manufactured by powder metallurgy, etc., with the technology currently in practical use, the particle diameter of the raw material powder is several microns or more, and it is not possible to generate fine pores at high density, so the catalyst must be used. A large amount could not be supported. The present invention has been made in view of the above-mentioned problems, and provides a catalyst carrier which can increase the specific surface area to increase the amount of supported catalyst and has excellent mechanical strength and impact resistance, and a method for producing the same. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】上記の目的を達成するた
めに本発明における触媒担体は、アルミニウム含有鉄基
合金の表面を繊維状窒化アルミニウムによって表面加飾
したことを特徴とするものであり、そのアルミニウム含
有鉄基合金が、アルミニウムを３．５〜１０重量％、ク
ロムを１５〜２５重量％、ランタン、セリウム、イット
リウム、イットリビウム、チタンの中から選ばれた１種
類以上を合計０〜０．５重量％含有することを特徴とす
る。さらに本発明における触媒担体の製造方法は、アル
ミニウム含有鉄基合金を０．００１〜５０ｍｍＨｇの窒
素ガス雰囲気中で９００〜１２５０℃で熱処理して、表
面に繊維状窒化アルミニウムを生成させて表面加飾させ
ることを特徴とするものである。Means for Solving the Problems To achieve the above object, a catalyst carrier according to the present invention is characterized in that the surface of an aluminum-containing iron-based alloy is decorated with fibrous aluminum nitride. The aluminum-containing iron-based alloy contains 3.5 to 10% by weight of aluminum, 15 to 25% by weight of chromium, and one or more selected from lanthanum, cerium, yttrium, yttrium, and titanium in total of 0 to 0. It is characterized by containing 5% by weight. Further, in the method for producing a catalyst carrier according to the present invention, the aluminum-containing iron-based alloy is heat-treated at 900 to 1250 ° C. in a nitrogen gas atmosphere of 0.001 to 50 mmHg to generate fibrous aluminum nitride on the surface and decorate the surface. It is characterized by the following.
【０００５】[0005]
【発明の実施の形態】本発明に採用する触媒担体は、ア
ルミニウムを含有する鉄基合金であって、表面が繊維状
窒化アルミニウムによって加飾されたものである。ここ
で加飾とは、表面に新しい物質を付け加えて表面処理を
することを言う。触媒は主に合金および繊維表面と繊維
同士の絡み合いが形成する空間に担持される。繊維状窒
化アルミニウムの繊維径は０．０２〜０．５μｍ、好ま
しくは０．０５〜０．２μｍ、長さは２μｍ以上、好ま
しくは５μｍ以上である。繊維径が０．０２μｍより細
いと表面に触媒を担持し難く、０．５μｍより太いと比
表面積が小さく、折損し易く、さらに作成条件が難し
い。また長さが２μｍより短いと繊維同士の絡み合いに
よる触媒担持が困難である。BEST MODE FOR CARRYING OUT THE INVENTION The catalyst carrier used in the present invention is an iron-based alloy containing aluminum, the surface of which is decorated with fibrous aluminum nitride. Here, the term "decoration" means that a new material is added to the surface to perform surface treatment. The catalyst is mainly carried in the alloy and the space where the entanglement between the fiber surface and the fiber is formed. The fiber diameter of the fibrous aluminum nitride is 0.02 to 0.5 μm, preferably 0.05 to 0.2 μm, and the length is 2 μm or more, preferably 5 μm or more. When the fiber diameter is smaller than 0.02 μm, it is difficult to carry the catalyst on the surface, and when the fiber diameter is larger than 0.5 μm, the specific surface area is small, the fiber is easily broken, and the preparation conditions are difficult. If the length is shorter than 2 μm, it is difficult to carry the catalyst due to the entanglement of the fibers.
【０００６】本発明に採用するアルミニウムを含有する
鉄基合金は、表面に繊維状窒化アルミニウムを設置する
際必要な成分組成である。たとえばアルミニウムを３．
５〜１０重量％、好ましくは４．０〜５．５重量％、ク
ロムを１５〜２５重量％、ランタン、セリウム、イット
リウム、イットリビウム、チタンの中から選ばれた１種
類以上を合計０〜０．５重量％含有する。この合金の場
合、アルミニウム含有量が２．５％未満であると表面に
繊維状窒化アルミニウムを設置することが困難であり、
１０％を超すと合金表面のアルミニウム化合物が過剰と
なる。クロム含有量が１５％未満であると耐熱性が不十
分であり、２５％を越えると結晶構造が不安定になる。
ランタン、セリウム、イットリウム、イットリビウム、
チタンの中から選ばれた１種類以上を成分とするのは、
合金と表面生成物の親和性、安定性向上のためであっ
て、含有量０．５％以下で十分効果がある。The aluminum-containing iron-based alloy used in the present invention has a necessary component composition when fibrous aluminum nitride is provided on the surface. For example, 3.
5 to 10% by weight, preferably 4.0 to 5.5% by weight, 15 to 25% by weight of chromium, and one or more selected from lanthanum, cerium, yttrium, yttrium, and titanium in total of 0 to 0. Contains 5% by weight. In the case of this alloy, if the aluminum content is less than 2.5%, it is difficult to install fibrous aluminum nitride on the surface,
If it exceeds 10%, the aluminum compound on the alloy surface becomes excessive. If the chromium content is less than 15%, the heat resistance is insufficient, and if it exceeds 25%, the crystal structure becomes unstable.
Lanthanum, cerium, yttrium, yttrium,
One or more types selected from titanium are used as components.
This is for improving the affinity and stability between the alloy and the surface product, and the content of 0.5% or less is sufficiently effective.
【０００７】アルミニウムを含有する鉄基合金を窒素含
有ガス雰囲気中で高温に加熱すると、合金中のアルミニ
ウムが表面に拡散し、雰囲気中の窒素と反応して窒化ア
ルミニウムを生成する。生成する窒化アルミニウムの形
態は、温度、雰囲気によって粉末状、板状、繊維状等と
なるが０．００１〜５０ｍｍＨｇの窒素ガス雰囲気中、
９００〜１２５０℃で熱処理すると、繊維状窒化アルミ
ニウムを生成させることができる。熱処理温度が９００
℃未満であると合金中のアルミニウムの表面への拡散が
不十分であり、１２５０℃を越えるとアルミニウム、ク
ロムの表面への拡散および雰囲気ガスとの反応が激し
く、合金が損傷してしまうことがある。[0007] When an iron-based alloy containing aluminum is heated to a high temperature in a nitrogen-containing gas atmosphere, aluminum in the alloy diffuses to the surface and reacts with nitrogen in the atmosphere to produce aluminum nitride. The form of aluminum nitride to be formed may be powdery, plate-like, fibrous, or the like depending on the temperature and atmosphere, but in a nitrogen gas atmosphere of 0.001 to 50 mmHg.
Heat treatment at 900 to 1250 ° C. can produce fibrous aluminum nitride. Heat treatment temperature is 900
If the temperature is lower than 0 ° C., the diffusion of aluminum in the alloy to the surface is insufficient. If the temperature exceeds 1250 ° C., the diffusion of aluminum and chromium to the surface and the reaction with the ambient gas are severe, and the alloy may be damaged. is there.
【０００８】この温度、ガス分圧の範囲内で、合金組
成、温度、ガス分圧、熱処理時間に応じて生成する繊維
状窒化アルミニウムの形態、生成量をある程度制御でき
るので、製造条件を選定して最適な触媒担体を作成す
る。ただし、合金が粉末あるいは繊維集合体であって粉
末径あるいは繊維径が１０μｍ程度と小さい場合、１１
００℃以上になるとアルミニウム成分のすべてが表面に
拡散、雰囲気ガスと反応して合金が脆化してしまうこと
がある。そのような場合は、雰囲気中の窒素分圧を小さ
めに、熱処理時間を短くする。なおこの熱処理時に酸素
が存在すると、一部酸化アルミニウムが生成するので、
それを避けるためには酸素分圧を０．０００５ｍｍＨｇ
以下にする。アルミニウム含有鉄基合金が、繊維集合体
あるいは粉末の場合は、たとえば加重加圧下、加圧下ま
たは加圧成形後、真空またはイナ−トガス中で焼結して
シ−ト、ブロックなど所要の形に成形してから、表面を
繊維状窒化アルミニウム加飾することも可能である。な
お、前記アルミニウム含有鉄基合金は、繊維集合体や粉
末に限らず板状に形成されたものであってもよい。[0008] Within this range of temperature and gas partial pressure, the form and amount of fibrous aluminum nitride formed according to the alloy composition, temperature, gas partial pressure and heat treatment time can be controlled to some extent. To create an optimal catalyst support. However, when the alloy is a powder or a fiber aggregate and the powder diameter or the fiber diameter is as small as about 10 μm, 11
When the temperature is higher than 00 ° C., all of the aluminum component diffuses to the surface and reacts with the atmospheric gas, whereby the alloy may be embrittled. In such a case, the heat treatment time is shortened by reducing the nitrogen partial pressure in the atmosphere. If oxygen is present during this heat treatment, aluminum oxide is partially generated,
To avoid this, the oxygen partial pressure should be 0.0005 mmHg
Do the following. When the aluminum-containing iron-based alloy is a fibrous aggregate or powder, for example, under a pressurized, pressurized, or pressurized form, it is sintered in a vacuum or inert gas to form a sheet, block, or the like. After molding, it is also possible to decorate the surface with fibrous aluminum nitride. The aluminum-containing iron-based alloy is not limited to a fiber aggregate or a powder, and may be formed in a plate shape.
【０００９】[0009]
【実施例１】厚さ０．１３ｍｍのクロム１６重量％、ア
ルミニウム５重量％、イットリウム０．３重量％を含有
するフェライト系鉄基合金（レジスタロイ社製ステンレ
ス鋼、ヘクラロイ）板を、真空電気炉中で、加熱しなが
ら空気を真空ポンプで脱気し、真空度０．１ｍｍＨｇ，
温度１２００℃の雰囲気で６０分熱処理した。熱処理後
の合金板表面の様子を、走査型電子顕微鏡（ＳＥＭ）に
写した写真（倍率５０００倍）を図１に示す。太さ０．
０４〜０．１５μｍ、長さ１０μｍ以上の繊維状物質が
多数生成しているのが観察される。この繊維状物質を光
電子分光分析（ＥＳＣＡ）法によって分析した結果、図
２に示すように窒化アルミニウムであることが判る。EXAMPLE 1 A ferrite-based iron-based alloy (stainless steel, Hecalloy, manufactured by Regroy, Inc.) containing 0.1% by weight of 16% by weight of chromium, 5% by weight of aluminum, and 0.3% by weight of yttrium was subjected to vacuum electricity. In a furnace, the air was deaerated with a vacuum pump while heating, and the degree of vacuum was 0.1 mmHg,
Heat treatment was performed in an atmosphere at a temperature of 1200 ° C. for 60 minutes. FIG. 1 shows a photograph (magnification: 5000 times) of a state of the surface of the alloy plate after the heat treatment, taken by a scanning electron microscope (SEM). Thickness 0.
It is observed that a large number of fibrous substances having a length of 04 to 0.15 μm and a length of 10 μm or more are generated. As a result of analyzing the fibrous substance by photoelectron spectroscopy (ESCA), it is found that the substance is aluminum nitride as shown in FIG.
【００１０】[0010]
【実施例２】繊維断面５０μｍ×１６μｍのクロム２０
重量％、アルミニウム５．１重量％、ランタン０．０８
重量％を含有するフェライト系鉄基合金（川崎製鉄製ス
テンレス鋼、リバ−ライトＲ２０）繊維焼結体シ−ト
（厚さ０．９ｍｍ、気孔率７９％）を実施例１と同様に
真空度０．００５ｍｍＨｇ、温度１１６０℃の雰囲気で
６０分熱処理した。熱処理後の合金繊維表面の様子を走
査型電子顕微鏡（ＳＥＭ）に写した写真（倍率１０００
倍）を図３に示す。実施例１と同様に合金表面が微細な
繊維状窒化アルミニウムによって加飾されている。Embodiment 2 Chromium 20 having a fiber cross section of 50 μm × 16 μm
Wt%, aluminum 5.1 wt%, lanthanum 0.08
A ferrite-based iron-based alloy (Stainless steel manufactured by Kawasaki Steel Co., Ltd., Riverite R20) fiber sintered body (thickness: 0.9 mm, porosity: 79%) containing 0.9% by weight was prepared in the same manner as in Example 1. Heat treatment was performed for 60 minutes in an atmosphere of 0.005 mmHg and a temperature of 1160 ° C. Photograph of the surface of the alloy fiber after heat treatment taken with a scanning electron microscope (SEM) (magnification: 1000).
3) is shown in FIG. As in Example 1, the alloy surface is decorated with fine fibrous aluminum nitride.
【００１１】[0011]
【発明の効果】本発明は上記の説明から明らかなよう
に、アルミニウム含有鉄基合金の表面を繊維状窒化アル
ミニウムによって表面加飾した触媒担体であるから、耐
熱性金属合金基を採用することにより機械的強度及び耐
熱衝撃性が高く、適用範囲が広くなり、かつ比表面積が
大きいことから多量の触媒を担持することが出来るとい
う優れた効果を奏する。またこの触媒担体は、アルミニ
ウム含有鉄基合金を真空電気炉中で所定の温度、ガス分
圧の範囲内で熱処理して繊維状窒化アルミニウムを生成
させるという簡単な方法により製造できるものである。As is clear from the above description, the present invention is a catalyst carrier in which the surface of an aluminum-containing iron-based alloy is decorated with fibrous aluminum nitride. Since the mechanical strength and the thermal shock resistance are high, the application range is wide, and the specific surface area is large, an excellent effect that a large amount of catalyst can be supported is exhibited. The catalyst carrier can be manufactured by a simple method of heat-treating an aluminum-containing iron-based alloy in a vacuum electric furnace at a predetermined temperature and within a range of a gas partial pressure to produce fibrous aluminum nitride.
【図１】実施例１で製造した合金表面に析出した繊維状
窒化アルミニウムのＳＥＭ写真（図面代用写真）であ
る。FIG. 1 is an SEM photograph (a photograph as a substitute for a drawing) of fibrous aluminum nitride precipitated on the surface of an alloy produced in Example 1.
【図２】実施例１で製造した合金表面に析出した繊維状
窒化アルミニウムのＥＳＣＡ分析結果のグラフである。FIG. 2 is a graph showing the results of ESCA analysis of fibrous aluminum nitride deposited on the surface of the alloy manufactured in Example 1.
【図３】実施例２で製造した金属繊維焼結体表面に析出
した繊維状窒化アルミニウムのＳＥＭ写真（図面代用写
真）である。FIG. 3 is an SEM photograph (a photograph as a substitute for a drawing) of fibrous aluminum nitride deposited on the surface of the metal fiber sintered body manufactured in Example 2.
フロントページの続き Ｆターム(参考） 4G069 AA01 AA08 BA17 BC16A BC16B BC40A BC40B BC42A BC42B BC43A BC58A BC58B BC66A BC66B BC68B CA03 DA06 EA03X EA03Y EA10 EB18Y FA03 Continued on front page F term (reference) 4G069 AA01 AA08 BA17 BC16A BC16B BC40A BC40B BC42A BC42B BC43A BC58A BC58B BC66A BC66B BC68B CA03 DA06 EA03X EA03Y EA10 EB18Y FA03
Claims (4)
状窒化アルミニウムによって表面加飾したことを特徴と
する触媒担体。1. A catalyst carrier, wherein the surface of an aluminum-containing iron-based alloy is decorated with fibrous aluminum nitride.
ミニウムを３．５〜１０重量％、クロムを１５〜２５重
量％、ランタン、セリウム、イットリウム、イットリビ
ウム、チタンの中から選ばれた１種類以上を合計０〜
０．５重量％含有することを特徴とする請求項１記載の
触媒担体。2. The aluminum-containing iron-based alloy contains at least one selected from 3.5 to 10% by weight of aluminum, 15 to 25% by weight of chromium, lanthanum, cerium, yttrium, yttrium, and titanium. Total 0
2. The catalyst carrier according to claim 1, which contains 0.5% by weight.
あるいは繊維集合体であることを特徴とする請求項１又
は２記載の触媒担体。3. The catalyst carrier according to claim 1, wherein the aluminum-containing iron-based alloy is a powder or a fiber aggregate.
〜５０ｍｍＨｇの窒素ガス雰囲気中で９００〜１２５０
℃で熱処理して、表面に繊維状窒化アルミニウムを生成
させて表面加飾させることを特徴とする触媒担体の製造
方法。4. An aluminum-containing iron-based alloy containing 0.001
900 to 1250 in a nitrogen gas atmosphere of ５０50 mmHg
A method for producing a catalyst carrier, comprising heat-treating at a temperature of ° C. to produce fibrous aluminum nitride on the surface and decorating the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11204009A JP2001029791A (en) | 1999-07-19 | 1999-07-19 | Catalyst carrier and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11204009A JP2001029791A (en) | 1999-07-19 | 1999-07-19 | Catalyst carrier and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001029791A true JP2001029791A (en) | 2001-02-06 |
Family
ID=16483269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11204009A Pending JP2001029791A (en) | 1999-07-19 | 1999-07-19 | Catalyst carrier and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001029791A (en) |
-
1999
- 1999-07-19 JP JP11204009A patent/JP2001029791A/en active Pending
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