高表面積のゼオライトのような炭素材料の強化された水素貯蔵能力
Zhuxian Yang1, Yongde Xia, Robert Mokaya
1School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK.
Journal of the American Chemical Society
|January 25, 2007
まとめ
強化された水素貯蔵のための高表面積の新種のゼオライトのような炭素材料を合成しました. これらの材料は有望な可逆性水素吸収能力を示しており,多孔性材料で報告されている最高値の1つです.
科学分野:
- マテリアルサイエンス 材料科学
- ナノテクノロジー ナノテクノロジー
- 化学工学は化学工学というものです.
背景:
- 先進的な多孔性の材料の開発は,エネルギー貯蔵アプリケーションにとって極めて重要です.
- 高い表面積と制御された多孔性は,効率的なガス吸収の鍵です.
研究 の 目的:
- 新しいゼオライトのような炭素材料を合成し,特徴づけること.
- 水素貯蔵容量とエネルギー利用の可能性を評価する.
主な方法:
- ゼオライトベータをテンプレートとして,アセトニトリルを前駆体として使用した化学蒸気堆積 (CVD).
- 粉末X線 difrraction (XRD) と構造分析のための伝送電子顕微鏡 (TEM).
- 表面積と毛穴サイズ分布を決定する窒素ソープション分析.
主要な成果:
- よく解像度XRDパターンと高表面積 (3200 m2/gまで) を有するゼオライトのような炭素材料が合成されました.
- 材料は微小孔性 (0.6-0.8 nm 孔) を有しており,表面積と孔の容量が大きい.
- -196°C,20barで最大6.9% (推定8.33%),1barで2.6%の可逆水素貯蔵能力を達成した.
結論:
- 合成されたゼオライトのような炭素は,優れた多孔性と表面積を持っています.
- これらの材料は,他の多孔性材料と比較して優れた水素貯蔵能力を示しています.
- この発見は,先進的な水素貯蔵ソリューションのためのこれらの炭素の潜在能力を強調しています.
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