CAJ | 학술논문

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。
본문대탄재료(주요시탄납미관)최화초기분적환원반응진행료계통연구。통과열중분석、정서승온탈부、투사전자현미경、물리흡부이급랍만광보등표정，발현탄재료표면적함양관능단재반응중기착중요적작용，이비표면、공결구、형모、결구결함이급가능존재적철잡질대반응몰유현저영향。탄기적작용비상중요，단시최기화산항대반응불리。제차지외，재료적π전자체계야흔관건，인위타가이전체전자，병차리우초기분적흡부。초기분환원안조직접로경진행，반응과정중생성적중간체아초기분가이신속전화위분알。
The reduction of nitrobenzene catalyzed by different carbon materials (mainly carbon nanotubes) was studied. TGA, TPD, TEM, N2 adsorption-desorption, and Raman spectroscopy were used to show that it was oxygenated groups that gave catalytic activity, while the surface area, pore struc-ture, morphology, structural defects and Fe impurities in the catalysts did not have a significant influence on the activity. The carbonyl group played an important role, but the carboxylic group and anhydride adversely affected the reaction. The conjugated π system, which was necessary for elec-tron transfer and nitrobenzene adsorption, was another critical factor. The reaction proceeded through the direct route in which the intermediate nitrosobenzene was converted directly to aniline quickly.