JP7629410B2 - カーボンナノチューブを製造するシステムおよび方法 - Google Patents
カーボンナノチューブを製造するシステムおよび方法 Download PDFInfo
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Description
本出願は、2019年4月3日に出願された米国特許仮出願第62/828,981号明細書の優先権を主張し、その内容は全部、引用により本明細書に編入する。
なし
本開示は一般に、カーボンナノチューブを製造するためのシステムおよび方法に関する。より詳細には本開示はおよそ25:1から500:1のアスペクト比、および約1mmから約50mm、または好ましくは約25mmの長さを有する短いカーボンナノチューブファイバーの製造法に関する。
一般にカーボンナノチューブファイバーを作製する方法は、できるかぎり層流に近い流れでカーボンナノチューブの凝集を促進して、大変長いファイバーを形成することを試みている。特別な濃度および層流内で、浮動している触媒の化学気相成長(chemical vapor deposition)により成長する高いアスペクト比のカーボンナノチューブは、低密度の機械的に連結したネットワークに合体する傾向があり、この中でチューブおよびチューブの束は、もつれあいおよびファンデルワールス力の組み合わせにより負荷を移動させる。このネットワークは、反応の担体および副産物のガスで本質的に「膨らんで」いる。便宜上この固体/ガスネットワークをエアロゲルと呼ぶことができる。この自然な現象は連続フィルムおよびファイバーを形成するために有用であるが、幾つかの課題も提示する。エアロゲルは限定された塑性ひずみ範囲で壊れやすいので、産生生成物の特性は具体的な反応槽の生産率に直接依存する。例えばこの方法により形成されるテープは、反応槽の生産率に直接関連する単位長あたりの質量を有することになる。第二に、操作はこのテープを伸ばし、積層し、または凝縮できるが、限られた程度だけである。結果として、反応槽の生産率を生成物の形成工程と分ける方法が望ましい。これを達成する1つの方法は、エアロゲルの形成前、最中または後に化学気相成長反応槽の産生物から直接短いファイバーを形成することである。
Claims (8)
- 短いカーボンナノチューブファイバーの製造法であって:
(i)炭素質ガス、触媒および水素を反応槽に導入し、ここで反応槽は触媒の存在下で炭素質ガスを炭素質ガスの構成原子に分解するために十分な温度であり、そしてここで構成原子は炭素原子および水素原子を含んでなり;
(ii)炭素質ガスの炭素原子を触媒と相互作用させてカーボンナノチューブを生成し;(iii)1mmから約50mmの範囲の長さを有する短いカーボンナノチューブファイバーを形成するために、反応槽から出る前にカーボンナノチューブを、
以下(a)1もしくは複数の高速ジェットガス、(b)1もしくは複数の回転インペラ、(c)テクスチャー表面をわたるガス流、および/または(d)鈍器の配列による1もしくは複数の衝撃、の少なくとも2つに供し;そして
(iv)短いカーボンナノチューブファイバーを回収する
ことを含んでなる前記方法。 - 触媒がフェロセンである請求項1に記載の方法。
- 炭素質ガスの一部がカーボンナノチューブを形成するための触媒と反応せず、そしてそのような一部が第2反応槽へ送られる、請求項1に記載の方法。
- 触媒量が回収され、そして次に再生され、そして(i)第2反応槽へ導入されるか、または(ii)後に使用するために貯蔵されるのいずれかである、請求項1に記載の方法。
- 触媒量が回収され、そして次に再生され、そして(i)新たな触媒量と共に、第2反応槽へ導入される、請求項1に記載の方法。
- 触媒が、(i)触媒を空気中で酸化し、および/または電気化学的処理により触媒を剥離し、触媒を塩酸に溶解して塩酸塩を形成し、次いで塩酸塩をシクロペンタジエニドナトリウムと反応させる;および(ii)触媒を少なくとも2000℃に加熱して触媒を揮発させ、次いで揮発した触媒を沈着させる;
少なくとも1つにより再生される請求項4に記載の方法。 - 炭素質ガスの分解から形成される水素が分離され、そして貯蔵または転売のために回収されるか、反応槽を加熱するための燃料として使用されるか、および/または別の反応槽へ導入されるのいずれかである、請求項1に記載の方法。
- 短いカーボンナノチューブファイバーが約25:1から500:1の範囲のアスペクト比を有する請求項1に記載の方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201962828981P | 2019-04-03 | 2019-04-03 | |
| US62/828,981 | 2019-04-03 | ||
| PCT/US2020/026741 WO2020206369A1 (en) | 2019-04-03 | 2020-04-03 | System and method of producing carbon nanotubes |
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| Publication Number | Publication Date |
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| JP2022527501A JP2022527501A (ja) | 2022-06-02 |
| JP7629410B2 true JP7629410B2 (ja) | 2025-02-13 |
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| JP2021557965A Active JP7629410B2 (ja) | 2019-04-03 | 2020-04-03 | カーボンナノチューブを製造するシステムおよび方法 |
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| US (3) | US11718525B2 (ja) |
| EP (2) | EP3946725A4 (ja) |
| JP (2) | JP7629409B2 (ja) |
| KR (2) | KR20210142747A (ja) |
| CN (2) | CN113631260A (ja) |
| CA (2) | CA3133123A1 (ja) |
| MX (2) | MX2021012137A (ja) |
| MY (1) | MY210268A (ja) |
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| WO2022140416A1 (en) * | 2020-12-22 | 2022-06-30 | Nanocomp Technologies, Inc. | Two-stage system and method for producing carbon nanotubes |
| FI130805B1 (fi) * | 2022-03-24 | 2024-03-27 | Canatu Oy | Laitteisto ja menetelmä katalyyttihiukkasten tuottamiseksi |
| CN115432695A (zh) * | 2022-10-10 | 2022-12-06 | 四川天人化学工程有限公司 | 一种高浓度一氧化碳替代甲烷制造碳纳米管的方法 |
| KR102870858B1 (ko) | 2023-10-20 | 2025-10-17 | 주식회사 삼천리 | 청록수소를 활용한 에너지 최적 관리 시스템 |
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| US11718525B2 (en) | 2023-08-08 |
| MY210268A (en) | 2025-09-08 |
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| CN113631260A (zh) | 2021-11-09 |
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| JP2022526374A (ja) | 2022-05-24 |
| JP2022527501A (ja) | 2022-06-02 |
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| WO2020206369A1 (en) | 2020-10-08 |
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| US20220144642A1 (en) | 2022-05-12 |
| EP3946724A4 (en) | 2023-08-16 |
| US11820660B2 (en) | 2023-11-21 |
| CA3133123A1 (en) | 2020-10-08 |
| EP3946725A1 (en) | 2022-02-09 |
| WO2020206262A1 (en) | 2020-10-08 |
| EP3946725A4 (en) | 2023-09-20 |
| US20220177311A1 (en) | 2022-06-09 |
| US20240124311A1 (en) | 2024-04-18 |
| EP3946724A1 (en) | 2022-02-09 |
| US12187613B2 (en) | 2025-01-07 |
| MX2021012137A (es) | 2022-01-24 |
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