硝基芳烃的连续流催化还原反应及反应机理研究综合实验设计  

Comprehensive experimental design of continuous flow catalysis toward nitroaromatics reduction and the reaction mechanism

作　　者：奚江波[1] 王刚[1] 孙琦 陈伟[1] XI Jiangbo;WANG Gang;SUN Qi;CHEN Wei(School of Chemistry and Environmental Engineering,National Experimental Teaching Demonstration Center for Environmental and Chemical Engineering Clean Production,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学环境与化工清洁生产国家级实验教学示范中心化学与环境工程学院,湖北武汉430205

出　　处：《实验技术与管理》2023年第4期114-118,共5页Experimental Technology and Management

基　　金：中国高等教育学会2021年度“实验室管理研究”专项课题(21SYYB03);武汉工程大学教学研究项目(X202041);武汉工程大学研究生教育教学改革项目(2021JYYM21,2021JYXM30);湖北高校省级教学改革研究项目(2022300)。

摘　　要：该实验制备了氮掺杂石墨烯-硅酸铝纤维组装体催化剂,并利用该催化剂构筑了连续流催化系统,研究了其对硝基芳烃的无金属催化还原反应机理。实验以氧化石墨烯、氨水和硅酸铝纤维为原料,经水热法合成了氮掺杂石墨烯-硅酸铝纤维组装体催化填料,通过扫描电子显微镜、透射电子显微镜、X射线光电子能谱等对其结构、形貌和元素组成进行了表征,并通过紫外可见吸收光谱、高效液相色谱和气相-质谱联用研究其催化硼氢化钠还原硝基芳烃的转化率和反应历程。In this experiment,a nitrogen-doped graphene(NG)-aluminum silicate microfibers(ASMFs)assembly catalyst is prepared.A continuous flow catalytic system is constructed based on the resultant NG-ASMFs catalyst,and its metal-free catalytic reduction mechanism for nitroaromatics is also studied.The NG-ASMFs packing catalyst is synthesized via a hydrothermal method using graphene oxide,ammonium hydroxide and ASMFs as raw materials.Its structure,morphology and elemental composition are characterized by scanning electron microscopy,transmission electron microscopy,and X-ray photoelectron spectroscopy.The conversion and reaction mechanism of nitroaromatics reduction by sodium borohydride are investigated by and UV-visible absorption spectroscopy,high performance liquid chromatography and gas chromatography-mass spectrometry.

关 键 词：综合实验 连续流 氮掺杂石墨烯 硝基芳烃还原 反应机理 

分 类 号：O69[理学—化学]