JP4129459B2 - 改質触媒用不織布および織布 - Google Patents

改質触媒用不織布および織布 Download PDF

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JP4129459B2
JP4129459B2 JP2005034712A JP2005034712A JP4129459B2 JP 4129459 B2 JP4129459 B2 JP 4129459B2 JP 2005034712 A JP2005034712 A JP 2005034712A JP 2005034712 A JP2005034712 A JP 2005034712A JP 4129459 B2 JP4129459 B2 JP 4129459B2
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noble metal
reforming catalyst
polymer
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nonwoven fabric
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JP2006218413A (ja
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正道 三倉
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有限会社末富エンジニアリング
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/36—Matrix structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/25—Metal
    • D03D15/258—Noble metal
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/275—Carbon fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/002—Inorganic yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2835—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support fibrous
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/10—Inorganic fibres based on non-oxides other than metals
    • D10B2101/12—Carbon; Pitch
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/20—Metallic fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/30—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel reformer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/14—Wire mesh fabric, woven glass cloth or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/10—Fibrous material, e.g. mineral or metallic wool
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/18—Composite material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/20—Plastics, e.g. polymers, polyester, polyurethane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • Y10T442/3089—Cross-sectional configuration of strand material is specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/609—Cross-sectional configuration of strand or fiber material is specified
    • Y10T442/611—Cross-sectional configuration of strand or fiber material is other than circular

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  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)
  • Nonwoven Fabrics (AREA)
  • Fuel Cell (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Description

この発明は、燃料電池に用いる水素燃料を得る際に、改質触媒として用いる不織布等に関する。
近年新たなエネルギー発電装置として、燃料電池が脚光を浴びている。燃料電池は、燃料となる水素と、空気中の酸素とを化学反応させることにより電気を作り出す仕組みであり、その発電効率の高さと環境に対する負荷の低さから、さまざまな利用法が模索されている。
ここで燃料となる水素は空気中にほとんど存在しないため、通常は都市ガスに含まれるメタノール等に水蒸気を反応させて作り出されており、その際に触媒として白金等の貴金属が用いられる。
例えば、特許文献１には、白金を担持した所定の元素とＺｒとの複合酸化物を含有する改質触媒が提案されている。
しかしこのような構成では、貴金属の量が多くなるため、結果的に水素燃料の製造コストが高くなる問題があった。
特開２００２−１２１００６号公報
そこでこの発明の解決しようとする課題は、燃料電池用の水素燃料を得るための都市ガス等の改質触媒において、貴金属の量を減らすことで水素燃料製造コストの低減を図ることである。
上記した課題を解決するため、この発明は、カーボン繊維の外周面に、一定の間隔をおいて長さ方向に連続する複数の凹入面を設け、各凹入面に長さ方向に連続する筋状貴金属部を埋没させた、断面円形の複合繊維からなる改質触媒用不織布を形成したのである。ここで貴金属とは白金、パラジウム、ロジウム、イリジウム、ルテニウム等希少でありかつ化学的に安定した触媒に用いるのに好適な金属をいう。
また、この発明は、カーボン繊維の外周面に、一定の間隔をおいて長さ方向に連続する複数の凹入面を設け、各凹入面に長さ方向に連続する筋状貴金属部を埋没させた、断面円形の複合繊維からなる改質触媒用織布を形成したのである。
前記繊維の径は５μｍ〜１００μｍであるのが好ましい。
改質触媒用不織布または織布を、カーボン繊維の外周面に、一定の間隔をおいて長さ方向に連続する複数の凹入面を設け、各凹入面に長さ方向に連続する筋状貴金属部を埋没させた、断面円形の複合繊維から形成することにより、外周面は貴金属で覆われているため、改質触媒としての性能は維持しつつも、貴金属の量が従来の金属板等からなる改質触媒とは比較にならないほど減少させることができる。そのため、結果的に水素燃料製造コストを低減することができる。また、同じく貴金属の減量により改質触媒の重量を軽減することができる。さらに、改質触媒が主にカーボン繊維で出来ているため柔軟で加工が容易となり、製品としての応用範囲が広がる。
また、改質触媒を不織布とすることで表面積を従来の金属板等に比べて飛躍的に増大させることができるため、触媒反応の効率を上げることができる。
繊維の径を５μｍ〜１００μｍとすることで、製品として繰り返しの使用に耐える強度を保持しつつ、表面積を増大させ触媒反応の効率を上げることができる。
以下、図面を参照しつつこの発明の実施の形態について説明する。ここでは、この発明にかかる改質触媒用不織布１２を、メルトブロー法により製造する方法を述べる。
まず、原料となるポリマー１０ａと貴金属粉末を混入したポリマー１０ｂを用意する。ポリマー１０ａとしては、石油ピッチ、石炭ピッチおよびエポキシ樹脂、フェノール樹脂等の熱硬化性樹脂または、硬化剤を混入した溶融紡糸可能な樹脂が用いられる。貴金属としては、白金、パラジウム、ロジウム、イリジウム、ルテニウムなどが用いられ、後に還元処理することを条件に塩化白金、酸化白金などの金属塩で代替することもできる。貴金属粉末の粒径は３μ以下であるのが好ましく、ポリマーへの混入率は４０容量％未満であるのが好ましい。
この原料１０ａ、１０ｂを図１に示すようにホッパ２０ａ、２０ｂに投入し、押出機３０ａ、３０ｂで加熱溶融し、ダイ４０に供給して繊維１１として紡出し、紡出した繊維１１を捕集ネットからなるコンベア５０上にシート状に堆積させこれをコンベア５０から剥離しながら、場合によりカレンダロール６０を通過させた後、巻取機７０で巻き取って不織布１２を製造するのがメルトブロー法の概略工程である。
繊維１１を、図２のようにポリマー１０ａからなる軸繊維１１ａの外周に、等間隔に４つの断面円弧状の凹入面を設け、そこに貴金属を混入したポリマー１０ｂからなる内周が前記凹入面の断面円弧状に対応して円弧状に膨らみ、外周が軸繊維１１ａ外周の凹入面を除いた部分の両端を延長した断面円形に対応して円弧状に膨らんだ筋状部１１ｂを埋没させ、全体として断面円形となる複合繊維とするには、図３（ａ）、(ｂ)のようなダイ４０を用いる。
図３（ａ）のようにダイ４０は、軸ポリマー導入口４０ａから導入された溶融したポリマー１０ａと、貴金属混入ポリマー導入口４０ｂから導入された溶融した貴金属混入ポリマー１０ｂとを複合部４０ｃで合流させる。図３(ｂ)のように複合部４０ｃでは、外周等間隔に四方が凹入した直進する軸ポリマー流路４０ｄと、前記凹入した四方を埋め合わせるように、４つの貴金属混入ポリマー流路４０ｅが形成され、溶融した貴金属を混入したポリマーが溶融したポリマーを軸としてその四方に埋没して取り巻くようにして合流し、全体として断面円形を形成するようになっている。さらに図３（ａ）のように、こうしてできたものを紡糸口４０ｆから吐出し、熱風導入口４０ｇを経て熱風吐出スリット４０ｈから噴出した高温のエアーで紡出する仕組みとなっている。なお、このようにして形成された複合繊維１１は、ポリマーからなる軸繊維１１ａの一部が外周面に露出しているため、メルトブロー法による繊維の自己接着積層に支障が生じない。
こうしてできた不織布１２をさらに、１５００℃から１６００℃の間で焼成し、黒鉛化処理を施してポリマーをカーボン繊維にすることで改質触媒用不織布が完成する。このようにしてできた改質触媒は、従来の金属板等と異なり柔軟なカーボン繊維から成る不織布でできているため、加工が容易で製品としての応用範囲が広がる。なお、貴金属の替わりに貴金属塩を用いた場合には、同時に金属還元処理を施して金属単体に還元する。また、必要に応じて不融化処理を施してもよい。
この実施の形態では不織布１２をメルトブロー法により製造したがこれに限られず、ニードルパンチ法、スパンレース法、スパンボンド法など公知の製法で製造することができる。また、複合繊維１１で織布を製造してもよく、その場合も織機を使った公知の製法が用いられる。
このようにして形成された繊維の径は、製品として使用に耐える十分な強度を保持しつつも、触媒効率を考えると可能な限り小さくすることが望ましいため、約１μｍ〜５０μｍとするのがよい。
メルトブロー法の概略図 複合繊維の拡大斜視図 （ａ）はダイの縦断面図、(ｂ)はその矢印横断面図
符号の説明
１０ａ ポリマー
１０ｂ 貴金属混入ポリマー
１１ 繊維
１１ａ 軸繊維
１１ｂ 筋状部
１２ 不織布
２０ａ、２０ｂ ホッパ
３０ａ、３０ｂ 押出機
４０ ダイ
４０ａ 軸ポリマー導入口
４０ｂ 貴金属混入ポリマー導入口
４０ｃ 複合部
４０ｄ 軸ポリマー流路
４０ｅ 貴金属混入ポリマー流路
４０ｆ 紡糸口
４０ｇ 熱風導入口
４０ｈ 熱風吐出スリット
５０ コンベア
６０ カレンダロール
７０ 巻取機

Claims (3)

  1. カーボン繊維の外周面に、一定の間隔をおいて長さ方向に連続する複数の凹入面を設け、各凹入面に長さ方向に連続する筋状貴金属部を埋没させた、断面円形の複合繊維からなる改質触媒用不織布。
  2. カーボン繊維の外周面に、一定の間隔をおいて長さ方向に連続する複数の凹入面を設け、各凹入面に長さ方向に連続する筋状貴金属部を埋没させた、断面円形の複合繊維からなる改質触媒用織布。
  3. 前記複合繊維の径は５μｍ〜１００μｍである請求項１に記載の不織布または請求項２に記載の織布。
JP2005034712A 2005-02-10 2005-02-10 改質触媒用不織布および織布 Expired - Fee Related JP4129459B2 (ja)

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US11/325,426 US20060178068A1 (en) 2005-02-10 2006-01-05 Non-woven and woven fabric for use as reforming catalyst

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US4583299A (en) * 1984-12-20 1986-04-22 Trw Inc. Fluidization aid for cohesive materials
US5037697A (en) * 1986-01-22 1991-08-06 Nitto Boseki Co., Ltd. Carbon fiber and process for producing the same
US5326633A (en) * 1986-03-24 1994-07-05 Ensci, Inc. Coated substrates
EP0421944A3 (en) * 1989-08-31 1992-06-17 Tanaka Kikinzoku Kogyo K.K. Composite carbon fibre and process for preparing same
WO1998053897A1 (en) * 1997-06-02 1998-12-03 Hitco Carbon Composites, Inc. High performance filters
FR2771309B1 (fr) * 1997-11-24 2000-02-11 Messier Bugatti Elaboration de support de catalyseur en fibres de carbone active
AU2003252658A1 (en) * 2002-07-17 2004-02-02 Bussan Nanotech Research Institute Inc. Method for producing fine carbon fiber
US7501012B2 (en) * 2003-08-26 2009-03-10 Auburn University Microfibrous entrapment of small reactive particulates and fibers for high contacting efficiency removal of contaminants from gaseous or liquid streams

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