大连理工大学学报2017，Vol.57Issue(5)：447-452,6.DOI:10.7511/dllgxb201705002
介孔二氧化锰制备及其催化臭氧氧化草酸研究
Preparation of mesoporous MnO2 for catalytic ozonation of oxalic acid
摘要
Abstract
A mesoporous MnO2 is prepared by the nanocasting method,and its performance as a catalyst for catalytic ozonation of oxalic acid is investigated.The ordered nanorods with high surface area (142 m2 · g-1 )benefit the active sites exposition and the mass adsorption,thus enhance the efficiency of catalytic ozonation.In the catalytic ozonation,hydroxyl radical is identified as the main reactive oxygen species,and the productive rate of hydroxyl radical by the mesoporous MnO2 is about 2 times as high as that by the non-mesoporous MnO2 .The adsorption capacity of oxalic acid by the mesoporous MnO2 is 9.42 times as high as that by the non-mesoporous MnO2 calculated by the Langmuir adsorption model. The pseudo first-order reaction kinetics constant of the catalytic ozonation of oxalic acid by the mesoporous MnO2 is 3 times as much as that by the non-mesoporous MnO2 .关键词
介孔二氧化锰/催化臭氧氧化/羟基自由基/草酸Key words
mesoporous MnO2/catalytic ozonation/hydroxyl radical/oxalic acid分类
资源环境引用本文复制引用
张建琳,陈硕,全燮,于洪涛,张耀斌..介孔二氧化锰制备及其催化臭氧氧化草酸研究[J].大连理工大学学报,2017,57(5):447-452,6.基金项目
国家自然科学基金资助项目(21590813). （21590813）
