Controllable construction of Ce-Mn-Oxwith tunable oxygen vacancies and active species for toluene catalytic combustion

被引：18
|
作者：
Huang, Zhenzhen [1 ]
Zhao, Jinggang [2 ]
Song, Zhongxian [3 ,4 ]
Liu, Wei [2 ]
Zhang, Xuejun [2 ]
Mao, Yanli [4 ]
Zhao, Heng [2 ]
Zhao, Min [2 ]
Liu, Shuixia [5 ]
Wang, Zhaodong [4 ]
机构：
[1] Zhengzhou Univ, Sch Water Conservancy & Engn, Zhengzhou 450001, Peoples R China
[2] Shenyang Univ Chem Technol, Shenyang 110142, Peoples R China
[3] Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China
[4] Henan Univ Urban Construct, Fac Environm & Municipal Engn, Henan Key Lab Water Pollut Control & Rehabil Tech, Pingdingshan 467036, Peoples R China
[5] Henan Key Lab Polyamide Intermediates, Pingdingshan 467000, Peoples R China
来源：
APPLIED ORGANOMETALLIC CHEMISTRY | 2020年 / 34卷 / 12期
基金：
中国国家自然科学基金;
关键词：
catalytic oxidation; hydrothermal conditions; redox capacity; structure defects; surface adsorption oxygen; VOLATILE ORGANIC-COMPOUNDS; MIXED-OXIDE CATALYSTS; MN CHEMICAL VALENCE; CHLORINATED VOCS; HYDROTHERMAL SYNTHESIS; THERMAL-STABILITY; MANGANESE OXIDES; HIGH-PERFORMANCE; METAL CATALYSTS; TOTAL OXIDATION;
D O I：
10.1002/aoc.5958
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A series of Ce-Mn-O(x)catalysts synthesized under different hydrothermal conditions were evaluated by catalytic removal of toluene. The results of characterization showed that the contents of oxygen vacancies and active species in catalysts were crucial for the catalytic oxidation process. The concentration of Ce3+, Mn3+, and adsorbed oxygen associated with structural defects in Ce-Mn-O(x)catalysts could be controlled by hydrothermal conditions, which were considered to promote redox capacity and improve catalytic oxidation performance. In addition, suitable synthetic conditions could increase theS(BET)andV(p)of catalysts. Among the prepared catalysts, CM-100 showed the best catalytic performance due to the generation of more defective oxygen and active species (Ce3+, Mn3+, and surface-adsorbed oxygen). In addition, the CM-100 catalyst showed satisfactory water resistance and stability.
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页数：12
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