JP6879914B2 - 天然炭水化物からの微多孔質炭素吸着剤 - Google Patents
天然炭水化物からの微多孔質炭素吸着剤 Download PDFInfo
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- JP6879914B2 JP6879914B2 JP2017529980A JP2017529980A JP6879914B2 JP 6879914 B2 JP6879914 B2 JP 6879914B2 JP 2017529980 A JP2017529980 A JP 2017529980A JP 2017529980 A JP2017529980 A JP 2017529980A JP 6879914 B2 JP6879914 B2 JP 6879914B2
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Description
本願は、2014年8月23日に出願された、「天然炭水化物からの高容積ガス貯蔵容量微多孔質モノリス」についての米国仮特許出願第62/041057号の優先権の利益を米国特許法第119条の下で主張するものである。米国仮特許出願第62/041057号の開示は、すべての目的のためにその全体が参照により本明細書に援用される。
本発明は、概して熱分解炭素材(carbon pyrolyzate material)に関し、より詳細には炭素吸着剤、例えば再生可能な天然源から調製される高純度微多孔質の炭素吸着剤、そのような炭素吸着剤を製造する方法、並びにそのような熱分解炭素材を利用するシステム及びプロセスに関する。そのようなシステム及びプロセスは、例えば天然ガス車両用の天然ガスのための、又は半導体製品、フラットパネルディスプレイ、ソーラーパネル等の製造用のプロセスガスを供給するための、又は吸着剤ベースの加熱冷却システム及びプロセスのための、又は電気化学電池、ガス捕捉、ガス隔離、ガス分離等を伴うシステム及びプロセスにおける使用のための流体貯蔵分配システム及びプロセスを含み得る。
天然に存在する炭水化物源物質に由来;
ASTM D2866−11の手順で決定して、1%未満の総灰分量;
0.50g/ccから1.40g/ccの範囲内の片密度;
750m2/gmより大きいN2 BET表面積;及び
21℃、35barの圧力で100V/Vを超えるメタン吸着容量
を特徴とする熱分解炭素に関する。
天然に存在する炭水化物源物質に由来;
モノリス又は粒状形態;
ASTM D2866−11の手順で決定して、1% 未満の総灰分量;
0.50g/ccから1.40g/ccの範囲内の片密度;
750m2/gmより大きいN2 BET表面積;及び
21℃、35barの圧力で100V/Vを超えるメタン吸着容量
を特徴とする熱分解炭素に関する。
天然に存在する炭水化物源物質に由来;
ASTM D2866−11の手順で決定して、1%未満の総灰分量;
0.50g/ccから1.40g/ccの範囲内の片密度;
750m2/gmより大きいN2 BET表面積;及び
21℃、35barの圧力で100V/Vを超えるメタン吸着容量
を特徴とする熱分解炭素に関する。
天然に存在する炭水化物源物質に由来;
モノリス形態;
ASTM D2866−11の手順で決定して、1%未満の総灰分量;
0.50g/ccから1.40g/ccの範囲内の片密度;
750m2/gmより大きいN2 BET表面積;及び
21℃、35barの圧力で100V/Vを超えるメタン吸着容量
を特徴とする熱分解炭素に関する。
天然のトウモロコシデンプンの供給を得、この供給物から採取したデンプン試料を秤量し、実験用エアーオーブン中195℃に加熱して、そのような前駆体物質を乾燥及び固定させた。次いで、乾燥したデンプンを、600℃の管状炉中、流動窒素下で熱分解させた。冷却後、デンプン由来の熱分解炭素のN2 BET表面積は、Micromeritics ASAP 2420 Porosimeterを用いて1グラム当たり578m2と測定された。
天然スクロース、フルクトース、デキストロース、及びラクトースの供給が得られた。これらの物質を実験用エアーオーブン中90℃で乾燥させ、次いで管状炉に充填し、そこで600℃の温度で流動窒素パージで熱分解させた。室温に冷却後、試料を取り出し、乳鉢と乳棒で粉砕して微細粉末を得た。Micromeritics ASAP 2420 Porosimeterを用い、糖由来の炭素粉末のN2 BET表面積を分析した。前記表面積測定の結果を表1に示す。
表1.糖由来炭素の表面積
表2.糖由来炭素タブレットデータ−タブレット密度及び表面積(SA)
天然ジャガイモデンプンの供給が得られた。デンプンの試料を秤量し、実験用エアーオーブン中で加熱乾燥させ、195℃の温度で前記試料を固定させた。次いで、乾燥したデンプンを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、Micromeritics ASAP 2420 Porosimeterを用い、ジャガイモデンプン由来炭素のN2 BET表面積を分析した。1グラム当たり498m2の表面積が決定された。
実施例3で論じた同じジャガイモデンプンの別の試料を秤量し、約223MPa(〜32,346psi)下で円筒形のタブレット形態に圧縮し、プリフォームタブレットを得た。タブレットを秤量し、測定し、片密度が計算可能となった。圧縮ジャガイモデンプンタブレットは、1.33グラム/ccの平均片密度を有した。複数のジャガイモデンプンタブレットを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、得られた炭素タブレットを秤量し、測定し、片密度を計算した。ジャガイモデンプン由来の炭素タブレットの平均片密度は、1.14グラム/ccであった。ジャガイモデンプン由来の炭素タブレットのN2 BET表面積を分析し、1グラム当たり475m2の表面積を有することが見出された。
天然の小麦デンプンの供給が得られた。デンプンの試料を秤量し、実験用エアーオーブン中で加熱乾燥させ、235℃の温度で前記試料を固定させた。次いで、乾燥したデンプンを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、Micromeritics ASAP 2420 Porosimeterを用い、小麦デンプン由来炭素のN2 BET表面積を分析した。1グラム当たり543m2の表面積が決定された。
実施例1で論じた同じ天然トウモロコシデンプンの別の試料を秤量し、約185MPa(〜26,841psi)下で円筒形のタブレット形態に圧縮し、プリフォームタブレットを得た。タブレットを秤量し、測定し、片密度が計算可能となった。圧縮したトウモロコシデンプンタブレットは、1.32グラム/ccの平均片密度を有した。複数のトウモロコシデンプンタブレットを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、得られた炭素タブレットを秤量し、測定し、片密度を計算した。トウモロコシデンプン由来の炭素タブレットの平均片密度は、0.99グラム/ccであった。トウモロコシデンプン由来の炭素タブレットのN2 BET表面積を分析し、1グラム当たり537m2の表面積を有することが見出された。
天然のキャッサバデンプンの供給が得られた。前記デンプンの試料を秤量し、実験用エアーオーブン中で加熱乾燥させ、215℃の温度で前記試料を固定させた。次いで、乾燥したデンプンを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、Micromeritics ASAP 2420 Porosimeterを用い、キャッサバデンプン由来炭素のN2 BET表面積を分析した。1グラム当たり572m2の表面積が決定された。
工業用トウモロコシデンプン由来のマルトデキストリンの供給が得られた。前記マルトデキストリンの試料を秤量し、実験用エアーオーブン中で加熱乾燥させ、235℃の温度で前記試料を固定させた。次いで、乾燥したマルトデキストリンを、600℃の温度で管状炉中、流動窒素下で熱分解させた。冷却後、Micromeritics ASAP 2420 Porosimeterを用い、トウモロコシデンプン由来のマルトデキストリン炭素の、N2 BET表面積を分析した。1グラム当たり465m2の表面積が決定された。
実施例8で論じたトウモロコシデンプン由来のマルトデキストリンと混合した実施例1及び6で論じた天然トウモロコシデンプンを様々な比率で組み合わせた円筒形のタブレットを、28から338MPa(〜4050psiから49,000psi)の間の圧縮条件の範囲で成形し、プリフォームタブレットを得た。タブレットを秤量し、強度及び他の重要な物理的特性についていくつかの方法で測定及び評価した。ブレンドされた物質は、純粋なトウモロコシデンプン又は純粋なマルトデキストリンのいずれかを用いて得られた特性と非常に強い混合物の線形規則の関係に則った。
三フッ化ホウ素の吸着容量の試験のためにいくつかのデンプン由来炭素の試料が選択された。なぜなら、この大きな平らな分子は、微多孔質炭素中のスリット状気孔の良好な評価を提供するためである。すべてのデンプン由来の炭素試料は、600℃の温度の管状炉内で流動窒素下で熱分解されていた。次いで、それぞれを600℃から1000℃の間の温度でCO2中で酸化的に活性化し、表面積を1グラム当たり1000平方メートル超に増加させた。
表4.選択された炭水化物由来炭素吸着剤の三フッ化ホウ素容量データ
Claims (5)
- 熱分解炭素吸着剤であって、
天然に存在する炭水化物源物質に由来すること;
0.50g/cc〜1.40g/ccの範囲内の片密度;
750m 2 /gmより大きいN2 BET表面積;および
21℃、35barの圧力で100V/Vを超えるメタン吸着容量
により特徴付けられ、
天然に存在する炭水化物源物質が、デンプン又はマルトデキストリンであり、
熱分解炭素吸着剤が活性化型であり、かつバインダーレスである、
熱分解炭素吸着剤。 - 粒状形態の、請求項1に記載の熱分解炭素吸着剤。
- モノリス形態の、請求項1に記載の熱分解炭素吸着剤。
- ガス供給パッケージ中のガス貯蔵媒体としての、請求項1に記載の熱分解炭素吸着剤。
- 請求項1に記載の熱分解炭素吸着剤を保持するガス供給容器を含むガス供給パッケージ。
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WO2017035086A1 (en) * | 2015-08-22 | 2017-03-02 | Entegris, Inc. | Carbohydrate pyrolyzate adsosrbent and systems and processes utilizing same |
US20190001299A1 (en) * | 2015-08-22 | 2019-01-03 | Entegris, Inc. | Microcrystalline cellulose pyrolyzate adsorbent and gas supply packages comprising same |
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EP3183056A1 (en) | 2017-06-28 |
KR102130196B1 (ko) | 2020-07-03 |
US20180221851A1 (en) | 2018-08-09 |
WO2016032915A1 (en) | 2016-03-03 |
EP3183056A4 (en) | 2018-04-11 |
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