催化作用
碳纤维
无定形碳
化学
有机化学
无定形固体
光化学
材料科学
复合数
复合材料
作者
Mai Okamura,Atsushi Takagaki,Masakazu Toda,Junko N. Kondo,Kazunari Domen,Takashi Tatsumi,Michikazu Hara,Shigenobu Hayashi
摘要
Carbonization of d-glucose at 573−723 K followed by sulfonation produces a functionalized amorphous carbon material with acid catalytic activity as a solid-acid replacement for sulfuric acid. The carbon material contains phenolic hydroxyl, carboxylic acid, and sulfonic acid groups and exhibits high catalytic performance for liquid-phase acid-catalyzed reactions. Carbonization at higher temperature followed by sulfonation also results in amorphous carbon, but the resultant does not exhibit catalytic activity although the amorphous carbon has sufficient amount of sulfonic acid groups. Structural and active site analyses suggest that the marked difference in catalytic activity is due to the accessibility of reactants to sulfonic acid groups in the carbon structure.
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