JPWO2020189632A1 - 炭素クラスター製造用の成形体とその製造方法 - Google Patents
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Abstract
Description
バイオマスの仮焼成体と、結合剤とを含む、成形された前駆体を得る工程;
任意に、前駆体を更に焼成する工程;および
前駆体を2500℃以上の温度で黒鉛化する工程。
1.炭素クラスター製造用の成形体
本発明の炭素クラスター製造用の成形体(以下、本発明の成形体ともいう。)は、バイオマスを主原料として黒鉛化されたものである。
本発明の炭素クラスター製造用の成形体の製造方法(以下、本発明の製造方法ともいう。)は、以下の工程(A)、(B)、(C)を含む。
(A)バイオマスの仮焼成体と、結合剤とを含む、成形された前駆体を得る工程
(B)任意に、前駆体を更に焼成する工程
(C)前駆体を2500℃以上の温度で黒鉛化する工程
(かさ比重)
ノギスで成形体の各辺の長さを測り、それぞれ各辺の平均寸法から体積を求め、重量を測った。重量÷体積によりかさ比重を算出した。
JIS R 7222に規定されたケルビンダブルブリッジ法により測定した。
粉末X線回折法(装置名:MiniFlex II、X線源:CuKα、出力:0.45kW、取込み幅:0.02°)により回折パターンを得て、各サンプルの2θの26〜27°の間のピークを比較して黒鉛化度合を判定した(〇:明瞭な1本のピークあり、×:ピークなし、あるいは、他のピークが重なっており、他のピークの2倍以上の強度がない)。
JIS Z 7302−4に従って測定した。すなわち原料を粉砕し、その1gを試料として、空気中で815℃±10℃に加熱したとき残留する灰の質量を試料に対する重量百分率で示した値を灰分とした。
アーク放電は、次の方法によって行った。
炭素材料からなる成形体を断面が46mm×46mmの直方体状に加工し、Heガス中で直流アーク放電により蒸発させることで合成を行い、フラーレン類を含有する煤を得た。ロッドが割れていても、可能な場合には、24mm×24mmの直方体状に切り出してアーク放電を行った。合成は壁面を水冷した密閉容器内で行った。この際、炭素材料の蒸発に合わせて、電極間距離を制御し、出力を一定に安定させるようにした。
Claims (8)
- バイオマスを主原料とし、前記バイオマスと結合剤とを由来原料に含み黒鉛化され、電気比抵抗が100μΩm以下であり、かつ、粉末X線回折法による回折パターンが、2θ(θはブラッグ角)が26〜27°の間に1本のピークを有するとともに前記ピークの1/3幅÷底辺の値が0.68以下となることを特徴とする炭素クラスター製造用の成形体。
- かさ比重が0.8〜2g/cm3である、請求項1に記載の成形体。
- 黒鉛化前の前駆体を作製するときの水分の含有量が前駆体全体の3.2質量%より大きく、12.6質量%より小さい、請求項1又は2に記載の成形体。
- 黒鉛化前の灰分が15質量%以下である請求項1から3のいずれかに記載の成形体。
- 前記結合剤が糖類を含む、請求項1から4のいずれかに記載の成形体。
- 炭素クラスターはフラーレンである、請求項1から5のいずれかに記載の成形体。
- 以下の工程を含む、請求項1から6のいずれかに記載の炭素クラスター製造用の成形体の製造方法:
バイオマスの仮焼成体と、結合剤とを含む、成形された前駆体を得る工程;
任意に、前記前駆体を更に焼成する工程;及び
前記前駆体を2500℃以上の温度で黒鉛化する工程。 - 前記バイオマスの仮焼成体は、1300℃以下の温度で焼成したものである、請求項7に記載の製造方法。
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PCT/JP2020/011497 WO2020189632A1 (ja) | 2019-03-20 | 2020-03-16 | 炭素クラスター製造用の成形体とその製造方法 |
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WO2024041721A1 (de) * | 2022-08-22 | 2024-02-29 | Nippon Kornmeyer Carbon Group Gmbh | Verfahren zum herstellen von graphit aus papier |
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CN101000955B (zh) * | 2006-01-09 | 2010-11-03 | 英耐时有限公司 | 锂离子二次电池用负极碳材料及其制造方法 |
WO2010137592A1 (ja) * | 2009-05-26 | 2010-12-02 | 株式会社インキュベーション・アライアンス | 炭素材料及びその製造方法 |
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JP2000219506A (ja) * | 1999-01-29 | 2000-08-08 | Chugoku Seiko Kk | フラーレンの製法 |
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