JP2010511580A - カーボンナノ構造化材料を製造するための複合触媒および方法 - Google Patents
カーボンナノ構造化材料を製造するための複合触媒および方法 Download PDFInfo
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- JP2010511580A JP2010511580A JP2009533422A JP2009533422A JP2010511580A JP 2010511580 A JP2010511580 A JP 2010511580A JP 2009533422 A JP2009533422 A JP 2009533422A JP 2009533422 A JP2009533422 A JP 2009533422A JP 2010511580 A JP2010511580 A JP 2010511580A
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- catalyst layer
- composite catalyst
- substrate
- carbon nanotubes
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- 238000004519 manufacturing process Methods 0.000 title description 2
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- 238000000034 method Methods 0.000 claims abstract description 124
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/16—Preparation
- C01B32/162—Preparation characterised by catalysts
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- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
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- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
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- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
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- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
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Abstract
Description
1つの実施形態では、鉄はその低い融点と、その他の第8族元素に比べて低いコストの点で好ましい触媒である。
Claims (40)
- 複数のカーボンナノチューブを基材に形成する方法であって、
第8族元素と、ナノチューブの成長に単独では触媒作用を及ぼさない1つの金属から成る非触媒元素とから成る複合触媒層を、前記基材に蒸着する工程と、
前記複合触媒層を酸化して、酸化した複合触媒層を形成する工程と、
前記酸化した複合触媒層を還元して、還元された複合触媒層を形成する工程と、
前記還元された複合触媒層の上に、前記カーボンナノチューブを成長させる工程とを含むことを特徴とする、方法。 - 前記第8族元素は少なくとも、Fe,Co,Ni,Ru,Pd,Os,Ir,又はPt又はそれらの組合せから成る、請求項1に記載の方法。
- 前記非触媒元素はランタノイドから成る、請求項1に記載の方法。
- 前記非触媒元素はGdから成る、請求項1に記載の方法。
- 前記非触媒元素はLaから成る、請求項1に記載の方法。
- 前記非触媒元素はEuから成る、請求項1に記載の方法。
- 前記非触媒元素はAuから成る、請求項1に記載の方法。
- 前記複合触媒層は約0.5nmよりも大きい厚みを有する、請求項1に記載の方法。
- 前記複合触媒層は約1nmと約2nmとの間の厚みを有する、請求項1に記載の方法。
- 前記カーボンナノチューブは化学蒸着反応炉で形成される、請求項1に記載の方法。
- 前記複合触媒層を蒸着する間に、前記第8族元素及び前記非触媒元素は、略同時に前記基板の上に蒸着される、請求項1に記載の方法。
- 前記複合触媒層は、少なくとも約5wt%の前記第8族元素を包含する、請求項11に記載の方法。
- 前記複合触媒層は少なくとも約50wt%の前記第8族元素を包含する、請求項11に記載の方法。
- 前記複合触媒層は少なくとも約95wt%の前記第8族元素を包含する、請求項11に記載の方法。
- 複数の前記第8族元素と前記非触媒元素との交互の層を前記基板に蒸着する、請求項1に記載の方法。
- 前記複合触媒層は、塗布されていない領域の約0.01mmから約3mmの領域によって分離されている複数の塗布された領域から成るパターンを有する不連続な層である、請求項1に記載の方法。
- 前記塗布された領域は直径約1mmである、請求項16に記載の方法。
- 前記複合触媒層を酸化する間に、前記複合触媒層は約300℃と約900℃の間の焼き鈍し温度に加熱される、請求項1に記載の方法。
- 前記複合触媒層を酸化する間に、前記複合触媒層は約300℃と約500℃の間の焼き鈍し温度に加熱される、請求項1に記載の方法。
- 前記酸化複合触媒層の還元は、前記酸化複合触媒層を約600℃と約800℃との間に加熱することを含む、請求項1に記載の方法。
- 請求項1に記載の方法で成長させたことを特徴とするカーボンナノチューブ。
- 複数のカーボンナノチューブを基材に形成する方法であって、
約1nmと約2nmとの間の厚みを有する、第8族元素とナノチューブの成長に単独では触媒作用を及ぼさない1つの金属から成る非触媒元素とから成る複合触媒層を、前記基板の上に蒸着する工程と、
前記複合触媒層を約300℃と約900℃との間の焼き鈍し温度に加熱することによって、前記複合触媒層を酸化して、酸化複合触媒層を形成する工程と、
前記酸化した複合触媒層を還元ガスの中で、約600℃と約800℃との間に加熱して前記酸化複合触媒層を還元して、還元した複合触媒層を形成する工程と、
前記還元した複合触媒層の上に前記カーボンナノチューブを成長させる工程と
を含むことを特徴とする、方法。 - 前記複合触媒層を蒸着する間、前記第8族元素及び前記非触媒元素が、前記基板の上に、略同時に蒸着される、請求項22の方法。
- 前記第8族元素と前記非触媒元素との複数の交互の層を前記基板の上に蒸着する、請求項22の方法。
- 前記交互の層の数は奇数である、前記24に記載の方法。
- 複数の微粒子状基板を使用してカーボンナノチューブを形成する方法であって、
少なくともFe,Co,Ni,Ru,Rh,Pd,Os,Ir,またはその組み合わせを含む第8族元素と、ランタノイドを含む非触媒元素との複数の交互の層を含む複合触媒層を、前記微粒子状基板の上に蒸着する工程と、
前記複合触媒層の上に前記カーボンナノチューブを成長させる工程と
を含むことを特徴とする、方法。 - 複数のカーボンナノチューブのバルク合成の為の微粒子状基板であって、
酸化微粒子と、
前記酸化微粒子を覆う複合触媒層とから成り、
前記複合触媒層は第8族元素と非触媒元素の複数の交互の層を含むことを特徴とする、微粒子状基板。 - 前記第8族元素は少なくとも、Fe,Co,Ni,Ru,Pd,Os,Ir,又はPt又はそれらの組合せから成る、請求項27に記載の微粒子状基板。
- 前記非触媒元素はランタノイドから成る、請求項27に記載の微粒子状基板。
- 前記非触媒元素はガドリニウムから成る、請求項27に記載の微粒子状基板。
- 前記非触媒元素はランタンから成る、請求項27に記載の微粒子状基板。
- 元素形態の第8族金属と元素形態の非触媒金属とから成る複合触媒層の上に、前記カーボンナノチューブを成長させる工程を含むことを特徴とする、カーボンナノチューブを形成する方法。
- 前記非触媒元素はランタノイドから成る、請求項32に記載の方法。
- 複数のカーボンナノチューブを基材に形成する方法であって、
前記基板の上の、第8族元素から成る触媒層を処理する工程と、
前記触媒層を酸化して、酸化触媒層を形成する工程と、
前記酸化触媒層を還元して、還元触媒層を形成する工程と、
前記還元された触媒層の上に、化学蒸着で、前記カーボンナノチューブを成長させる工程と
を含むことを特徴とする、方法。 - 前記触媒層は約1nmと約2nmとの間の厚みを有する、請求項34に記載の方法。
- 前記基板はシリコン基板である、請求項34に記載の方法。
- 触媒塗布を有する基板の上にカーボンナノチューブを成長させる方法であって、
前記基板の上に前記カーボンナノチューブを化学蒸着で成長させる工程と、
前記基板から前記カーボンナノチューブを取り外す工程と、
前記基板から前記触媒塗布を取り外さないで、前記基板の上に付加的カーボンナノチューブを成長させる工程と
を含むことを特徴とする、方法。 - 浮遊触媒を使用して複数のカーボンナノチューブを形成する方法であって、
第8族元素から成るガスを反応炉に流す工程と、
非触媒元素から成るガスを前記反応炉に流す工程であって、前記第8族元素と前記非触媒元素は反応して、前記浮遊触媒を形成する、工程と、
複数の反応性ガスを前記反応炉に流して、前記カーボンナノチューブを形成する工程と
を含むことを特徴とする、方法。 - 前記非触媒元素はランタノイドであり、前記浮遊触媒は前記ランタノイドの質量に対して約5から約95%である、請求項38に記載の方法。
- 複数のカーボンナノチューブを基材に形成する方法であって、
第8族元素と、ナノチューブの成長に単独では触媒作用を及ぼさない1つの金属から成る非触媒元素とから成る複合触媒層を、前記基材の第一の側と第二の側とに蒸着する工程と、
前記複合触媒層を酸化して、酸化した複合触媒層を形成する工程と、
前記酸化した複合触媒層を還元して、還元された複合触媒層を形成する工程と、
前記基板の前記第一の側と前記第二の側の前記還元された複合触媒層の上に前記カーボンナノチューブを成長させるように前記基板を位置させる工程と、
前記基板の前記第一の側と前記第二の側との上に前記カーボンナノチューブを同時に成長させる工程と
を含むことを特徴とする、方法。
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JP2012213716A (ja) * | 2011-03-31 | 2012-11-08 | Nippon Zeon Co Ltd | カーボンナノチューブ配向集合体製造用基材、カーボンナノチューブ配向集合体の製造方法、及びカーボンナノチューブ配向集合体製造用基材の製造方法 |
JP2015520717A (ja) * | 2012-04-16 | 2015-07-23 | シーアストーン リミテッド ライアビリティ カンパニー | 炭素酸化物触媒変換器中で金属触媒を使用するための方法 |
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EP2155384A2 (en) | 2010-02-24 |
US20140295098A1 (en) | 2014-10-02 |
US20080095695A1 (en) | 2008-04-24 |
JP5345061B2 (ja) | 2013-11-20 |
WO2008105936A2 (en) | 2008-09-04 |
US9845243B2 (en) | 2017-12-19 |
CN101952036B (zh) | 2013-11-27 |
CN101952036A (zh) | 2011-01-19 |
WO2008105936A3 (en) | 2010-01-14 |
US8753602B2 (en) | 2014-06-17 |
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