JP7284149B2 - カーボンナノチューブの合成のための方法及び装置 - Google Patents
カーボンナノチューブの合成のための方法及び装置 Download PDFInfo
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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
- C01B32/164—Preparation involving continuous processes
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/06—Multi-walled nanotubes
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/08—Aligned nanotubes
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/30—Purity
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/34—Length
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
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Description
本出願は、米国特許法第119条(e)の下で、全て参照によりその全体が本明細書に組み込まれている、2017年8月22日に出願された米国仮特許出願第62/548,942号、2017年8月22日に出願された米国仮特許出願第62/548,945号及び2017年8月22日に出願された米国仮特許出願第62/548,952号に対する優先権を主張する。
他に定義しない限り、本明細書において使用される全ての技術用語及び科学用語は、本発明が属する当業者が一般に理解するのと同じ意味を有する。本明細書においてある用語について複数の定義が存在する場合、他に断りのない限り、このセクションにおけるものが優先する。
CNTの炭素純度及び熱安定性を、熱重量分析器(TGA)であるTA instruments、Q500を使用して試験した。試料を、空気雰囲気(Praxair AI NDK)下にて温度から900℃まで10℃/分の速度で加熱し、900℃にて10分間保持し、その後、冷却した。炭素純度は、(全ての炭素質材料の重量)/(全ての炭素質材料の重量+触媒の重量)として定義される。屈曲点は、熱分解がその最大値に達する温度である。開始点は、材料の約10%が高温によって分解する温度である。図10は、本明細書に記載されている方法及び装置によって作製された多重壁のカーボンナノチューブについての熱安定性データを例示する。本明細書において作製された多重壁のカーボンナノチューブは、5~8つの壁及び10μm~200μmのカスタマイズ可能な長さを伴って約5nmの内径を有する。400℃未満の領域は、乏しい耐熱性を有するアモルファス炭素及び炭素質材料が分解した場所である。グラフから見ることができるように、本明細書に記載されている方法及び装置によって作製された多重壁のカーボンナノチューブ中にアモルファス炭素及び炭素質材料は殆ど存在しない。屈曲点は、721℃であり、開始点は、644℃であり、炭素純度は、99.4%超である。対照的に、NC7000(図示せず)、市販のCNTにおいて、屈曲点は、643℃であり、開始点は、583℃であり、炭素純度は、90%である。
10mgのCNTを、約100mLのメタノールに懸濁し、黒っぽい溶液を形成させた。次いで、このように得られた懸濁液を約10分間超音波処理し、CNTの薄層がラマンスペクトルのために必要とされるため、懸濁液にCNTを均一に分散させた。次いで、懸濁液をSi基板上に広げ、薄層を形成させた。次いで、コーティングされたSi基板を、オーブン中に130℃にて10分間入れ、試料から分散化剤を蒸発させた。次いで、ラマンスペクトルを、532nmのレーザー放射、50sの積分、10×対物レンズ及び24mWのレーザーを伴うThermos Nicolet Dispersive XRラマン顕微鏡で記録した。D及びGバンド強度の比は、CNTの構造的完全性を検証する診断手段として使用されることが多い。
Claims (10)
- 多重壁のカーボンナノチューブを合成する方法であって、
常に動いている基板上に触媒を連続的に堆積させる堆積ステップと、
前記基板上に多重壁のカーボンナノチューブを形成させる形成ステップと、
前記基板から多重壁のカーボンナノチューブを分離する分離ステップと、
多重壁のカーボンナノチューブを収集する収集ステップとからなり、
ここで、前記基板は、前記堆積ステップ、前記形成ステップ、前記分離ステップ及び前記収集ステップを通して常に逐次的に動き、
前記多重壁のカーボンナノチューブの純度は、95%超である、方法。 - 前記多重壁のカーボンナノチューブが、均一な長さのものであり、前記均一な長さは、前記多重壁のカーボンナノチューブの長さの平均値+/-10%の範囲である、請求項1に記載の方法。
- 前記平均値は、50μm、100μm、150μmおよび200μmからなる群より選ばれるいずれかの長さである、請求項2に記載の方法。
- 前記多重壁のカーボンナノチューブは、99%超の純度のものである、請求項1に記載の方法。
- 前記多重壁のカーボンナノチューブは、99%超の純度のものであり、前記平均値は、50μm、100μm、150μmおよび200μmからなる群より選ばれるいずれかの長さのものである、請求項2に記載の方法。
- 前記多重壁のカーボンナノチューブは、99.5%超の純度のものである、請求項1に記載の方法。
- 前記多重壁のカーボンナノチューブは、99.9%超の純度のものである、請求項1に記載の方法。
- 前記多重壁のカーボンナノチューブが、99.5%超の純度のものであり、前記平均値は、50μm、100μm、150μmおよび200μmからなる群より選ばれるいずれかの長さのものである、請求項2に記載の方法。
- 前記多重壁のカーボンナノチューブが、99.9%超の純度のものであり、前記平均値は、50μm、100μm、150μmおよび200μmからなる群より選ばれるいずれかの長さのものである、請求項2に記載の方法。
- 前記多重壁のカーボンナノチューブのラマンスペクトルは、0.76のI g /I d 比である、請求項1に記載の方法。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762548942P | 2017-08-22 | 2017-08-22 | |
US201762548945P | 2017-08-22 | 2017-08-22 | |
US201762548952P | 2017-08-22 | 2017-08-22 | |
US62/548,942 | 2017-08-22 | ||
US62/548,945 | 2017-08-22 | ||
US62/548,952 | 2017-08-22 | ||
PCT/US2018/047283 WO2019040468A1 (en) | 2017-08-22 | 2018-08-21 | METHODS AND DEVICES FOR SYNTHESIS OF CARBON NANOTUBES |
Publications (2)
Publication Number | Publication Date |
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JP2020531391A JP2020531391A (ja) | 2020-11-05 |
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US10714293B1 (en) * | 2018-10-17 | 2020-07-14 | Government Of The United States, As Represented By The Secretary Of The Air Force | Carbon nanotube fiber carpet structure |
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US11511995B2 (en) | 2022-11-29 |
CN115818624A (zh) | 2023-03-21 |
CN111373073A (zh) | 2020-07-03 |
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US20190062163A1 (en) | 2019-02-28 |
MX2020002071A (es) | 2020-09-03 |
AU2018321482A1 (en) | 2020-03-19 |
WO2019040468A1 (en) | 2019-02-28 |
KR102592871B1 (ko) | 2023-10-20 |
MY201583A (en) | 2024-03-02 |
EP3673097A4 (en) | 2021-05-26 |
RU2020111571A3 (ja) | 2021-12-08 |
KR20200044071A (ko) | 2020-04-28 |
JP2020531391A (ja) | 2020-11-05 |
SG11202001521SA (en) | 2020-03-30 |
KR20220148334A (ko) | 2022-11-04 |
US20200062595A1 (en) | 2020-02-27 |
AU2018321482B2 (en) | 2024-02-29 |
CA3073689A1 (en) | 2019-02-28 |
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