毛益萍,潘华,王晟康,杨仲余,张鼎盛,施耀

• 1:树人大学生物与环境工程学院
• 2:浙江大学化学工程与生物工程学院

摘要(Abstract)：

以甲苯为研究对象,通过水热合成法制备了一系列MnO_x催化剂,结合催化活性评价和催化表征手段,考察了MnO_x催化氧化甲苯的构-效关系。研究表明:在不同制备温度的MnO_x催化剂中,催化活性的顺序为MnO_x-70>MnO_x-90> MnO_x-120,MnO_x-70催化剂具有最低的起燃温度(T_(50)=196℃),其在256℃下甲苯的转化效率可稳定在90%。催化剂的活性与比表面积、孔体积、Mn~(3+)/Mn~(4+)和Olatt/Osurf的比值有关。催化剂的比表面积和孔体积大小为MnO_x-70>MnO_x-90>MnO_x-120。催化剂中锰以Mn~(4+)和Mn~(3+)的形式存在,3种催化剂表面Mn~(3+)/Mn~(4+)的比值依次为MnO_x-120>MnO_x-90>MnO_x-70。3种催化剂表面Olatt/Osurf的比值依次为MnO_x-70> MnO_x-90> MnO_x-120。说明催化剂表面Mn~(4+)和晶格氧含量越多,催化剂活性越好。

关键词(KeyWords)： 催化氧化;锰氧化物;甲苯;构-效关系

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金(LY19E080023);; 浙江树人大学中青年学术团队项目(XKJ0516205);浙江树人大学科研启动基金(KXJ0517102);; 国家级大学生创新创业训练计划项目(201811842020)

作者(Author): 毛益萍,潘华,王晟康,杨仲余,张鼎盛,施耀

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