Enhanced low temperature catalytic activity for toluene oxidation over core-shell LaMnO3@α-MnO2 catalyst with oxygen vacancies
Enhanced low temperature catalytic activity for toluene oxidation over core-shell LaMnO3@α-MnO2 catalyst with oxygen vacancies
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氧空位核壳LaMnO3@α-MnO2催化剂增强甲苯氧化低温催化活性
DOI:
10.1016/j.chphi.2022.100117
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发表时间:
2022-10
影响因子:
2.2
通讯作者:
Haibao Huang
中科院分区:
文献类型:
--
作者:
Jing Huang;Ruimei Fang;Xinyue Huang;Xiao'ai Luo;Yanjuan Sun;Fan Dong;Haibao Huang
Engineering oxygen vacancies is an effective strategy to enhance the catalytic activity of MnO2based composite oxides in heterogenous reactions, such as volatile organic compounds (VOCs) oxidation reaction. Core-shell structure LaMnO3@α-MnO2catalysts were prepared by hydrothermal method via varying the concentrations of LaMnO3and used in toluene oxidation reaction. Irregular core-shell structure L@M-10 catalyst exhibits excellent low temperature catalytic activity and stability, achieving 100% toluene removal efficiency at 200 °C. The light-off temperature (T50) and complete conversion temperature (T90) are 235 and 271 °C even after five repetitive cycles, respectively. The interfacial effect of L@M-10 sample promotes the generation of oxygen vacancies, facilitating the formation of active oxygen species. A possible oxidation reaction mechanism of toluene over L@M-10 catalyst was proposed in combination with thein-situDRIFTS results. Fast ring-opening reaction and quick transformation of carboxylate or anhydride species into final products CO2and H2O explains the superior catalytic property and stability of L@M-10 sample. This work highlights the effect of interface on the catalytic activity and stability of LaMnO3@α-MnO2catalyst towards toluene oxidation and can offer a new insight into the utilization of interfacial effect in thermocatalytic reactions.
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影响因子:
3.7
作者:
Tang Wenxiang;Deng Yuzhou;Li Wenhui;Li Shuangde;Wu Xiaofeng;Chen Yunfa
通讯作者:
Chen Yunfa
DOI:
10.1016/j.apcata.2016.06.001
发表时间:
2016-08
期刊:
Applied Catalysis A: General
影响因子:
--
作者:
Wu Mingzhou;Zhan Wangcheng;Guo Yanglong;Guo Yun;Wang Yunsong;Wang Li;Lu Guanzhong
通讯作者:
Lu Guanzhong
影响因子:
29.4
作者:
Liu, Ying;Ma, Chao;Dai, Zhihui
通讯作者:
Dai, Zhihui
影响因子:
13.6
作者:
Dong, Cui;Qu, Zhenping;Ren, Yewei
通讯作者:
Ren, Yewei
影响因子:
15.1
作者:
Peng, Ruosi;Sun, Xibo;Ye, Daiqi
通讯作者:
Ye, Daiqi