Mn_(3)O_(4)/AC催化剂的制备及其催化甲苯燃烧性能研究  

Preparation of Mn_(3)O_(4)/AC catalyst and its performance study on catalytic toluene combustion

作　　者：董永利 李硕 王凡 李志翔 宋微娜 Dong Yongli;Li Shuo;Wang Fan;Li Zhixiang;Song Weina(School of Environmental&Chemical Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学环境与化工学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2024年第2期195-200,共6页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省自然科学基金项目(LH2022F051)。

摘　　要：为制备高效环保的过渡金属催化剂,促进甲苯氧化,利用原位生长法、原位氧化还原沉淀法和沉淀沉积法合成了三种不同的Mn_(3)O_(4)/AC催化剂。采用XRD、SEM、N_(2)吸附-脱附、TPR、TPD等表征手段,分析Mn_(3)O_(4)/AC催化剂的结构,并通过甲苯的转化率评估其对甲苯的催化性能。结果表明,采用原位氧化还原沉淀法合成的Mn_(3)O_(4)/AC-RP催化剂具有最高效的催化甲苯燃烧活性,在质量空速为20000 mL/(g·h),甲苯体积分数为1000×10^(-10)的条件下,在210℃时实现了对甲苯的完全转化,这与其优异的氧化还原能力和晶格氧移动性有关。This paper seeks to prepare an efficient and environmentally friendly transition metal catalysts for better toluene oxidation.The study involves synthesizing three different Mn_(3)O_(4)/AC catalysts with the in-situ growth method,in-situ redox precipitation method and deposition-precipitation method,performing the structural analysis of Mn_(3)O_(4)/AC catalysts by using the characterized methods,such as XRD,SEM,N_(2) adsorption-desorption,TPR and TPD,and evaluating the catalytic performance on toluene based on toluene conversion.The results show that Mn_(3)O_(4)/AC-RP catalyst synthesized by in-situ redox precipitation method has the most efficient catalytic toluene combustion activity,the complete conversion of toluene is at 210℃under the condition of the weight hourly space velocity of 20000 mL/(g·h)and the toluene volume fraction of 1000×10^(-10),as which is related to its excellent redox ability and lattice oxygen mobility.

关 键 词：催化甲苯燃烧 锰氧化物 活性炭 晶格氧移动性 

分 类 号：TQ426.8[化学工程] X701[环境科学与工程—环境工程]