锰基UIO-66催化气化H_(2)O_(2)协同氧化甲苯的研究  

Catalysis of Toluene by Manganese Based UIO-66 Synergistic Vapor Hydrogen Peroxide

作　　者：周梦长 杜朝辉 阮玮 刘浩云 徐欣蓉 祁元 周长松 Zhou Mengchang;Du Chaohui;Ruan Wei;Liu Haoyun;Xu Xinrong;Qi Yuan;Zhou Changsong(School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210046,China)

机构地区：[1]南京师范大学能源与机械工程学院,南京210046

出　　处：《燃烧科学与技术》2023年第4期467-474,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51906114);江苏省高校自然科学基金资助项目(23KJB480006).

摘　　要：利用原位沉积法制备了不同掺杂比例的Mn负载UIO-66材料并协同气化过氧化氢脱除甲苯气体.采用XRD、SEM、TEM、XPS、ICP等技术对Mn-UIO-66的物理化学特性进行了表征.催化实验确定了Mn-UIO-66/H_(2)O_(2)的最佳反应温度、过氧化氢浓度,同时还探究了质量空速变化对甲苯催化降解的影响.EPR测试揭示了Mn-UIO-66/H_(2)O_(2)体系中羟基自由基产量与催化剂中锰元素的负载量呈正比例关系.GC-MS分析了甲苯脱除过程中的中间产物,并提出甲苯脱除过程中可能的反应路径.Mn supported UIO-66 materials with different doping ratios were prepared by in-situ deposition method and applied to the removal of toluene gas with vapor hydrogen peroxide.The physical and chemical properties of Mn-UIO-66 were characterized by XRD,SEM,TEM,XPS and ICP.The optimal reaction temperature and hy-drogen peroxide concentration of Mn-UIO-66/H_(2)O_(2) were determined by experiments.Meanwhile,the effect of mass space velocity on the catalytic degradation of toluene was also investigated.EPR test revealed that the yield of hydroxyl radical in Mn-UIO-66/H_(2)O_(2) system was positively proportional to the amount of manganese in the catalyst.The intermediate products in the reaction were analyzed by GC-MS,and the possible reaction paths were proposed.

关 键 词：锰 UIO-66 羟基自由基 甲苯脱除 

分 类 号：X511[环境科学与工程—环境工程]