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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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碳材料催化硝基苯还原反应
DOI: 10.1016/S1872-2067(14)60102-9, PP. 914-921
Keywords: 碳材料,氧官能团,活性位,硝基苯,还原
Abstract:
？本文对碳材料(主要是碳纳米管)催化硝基苯的还原反应进行了系统研究.通过热重分析、程序升温脱附、透射电子显微镜、物理吸附以及拉曼光谱等表征,发现碳材料表面的含氧官能团在反应中起着重要的作用,而比表面、孔结构、形貌、结构缺陷以及可能存在的铁杂质对反应没有显著影响.羰基的作用非常重要,但是羧基和酸酐对反应不利.除此之外,材料的π电子体系也很关键,因为它可以传递电子,并且利于硝基苯的吸附.硝基苯还原按照直接路径进行,反应过程中生成的中间体亚硝基苯可以迅速转化为苯胺.
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