Modulated synthesis of MnO2-decorated Fe-Mn composite oxides: synergistic effects on boosting the performance of toluene oxidation

被引：6

作者：

Ren, Lingling ^{[1
]}

Feng, Nengjie ^{[1
]}

Yu, Jiahuan ^{[1
]}

Zhao, Peng ^{[2
]}

Zhang, Xi ^{[1
]}

Wan, Hui ^{[1
]}

Guan, Guofeng ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Chem Engn,Jiangsu Collaborat Innovat Ctr Adv, Jiangsu Natl Synerget Innovat Ctr Adv Mat, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

[2] Sinopec Yangzi Petrochem Co Ltd, Res Inst, Nanjing 210048, Jiangsu, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2023年 / 326卷

基金：

中国国家自然科学基金;

关键词：

Iron-manganese oxides; Manganese dioxide; Synergistic effects; Toluene; Catalytic combustion; CATALYTIC PERFORMANCE; MANGANESE OXIDES; CO3O4; NANOPARTICLES; COMBUSTION; REMOVAL; CO; CE; REDUCTION; PYROLYSIS; STRATEGY;

D O I：

10.1016/j.jssc.2023.124244

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

MnO2-decorated iron-manganese composite oxides were prepared via a novel method combining hydrolysis driving redox reaction and hydrothermal approach. The differences in physicochemical properties and micro-structures were controlled by modulating the ratio of MnO2 to 5Mn1Fe (The molar ratio of Mn to Fe was 5:1). Characterization results displayed that the excellent efficiency of toluene removal over 3MnO2/5Mn1Fe catalyst was attributable to the special structure, strong low-temperature reducibility, high surface Mn3+/Mn4+ and Oads/ Olatt molar ratios. The interaction between MnO2 and 5Mn1Fe played a predominant role in outstanding catalytic efficiency of the hetero-nanostructures. Among all as-prepared catalysts, the highest activity was achieved over the bayberry-like 3MnO2/5Mn1Fe catalyst with corresponding T90 of 233 degrees C, much lower than MnO2 for 313 degrees C and 5Mn1Fe for 280 degrees C. This successful strategy could not only be applied to VOCs catalytic oxidation but also provide a novel synthetic path for other catalysis systems.

引用

页数：10

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