DICP OpenIR
Revealing the Highly Catalytic Performance of Spinel CoMn2O4 for Toluene Oxidation: Involvement and Replenishment of Oxygen Species Using In Situ Designed-TP Techniques
Dong, Cui1; Qu, Zhenping1; Qin, Yuan1; Fu, Qiang2; Sun, Hongchun1; Duan, Xiaoxiao1
Corresponding AuthorQu, Zhenping(quzhenping@dlut.edu.cn)
Keywordtoluene oxidation spinel CoMn2O4 oxygen species in situ designed-TP techniques in situ DRIFTS
Source PublicationACS CATALYSIS
2019-08-01
ISSN2155-5435
DOI10.1021/acscatal.9b01324
Volume9Issue:8Pages:6698-6710
Funding ProjectNational Nature Science Foundation of China[21876019] ; National Nature Science Foundation of China[21806017] ; Programme of Introducing Talents of Discipline to Universities[B13012] ; State Key Laboratory of Catalysis in DICP[Y401010502]
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordOXIDE CATALYSTS ; LOW-TEMPERATURE ; MANGANESE OXIDES ; OMS-2 CATALYST ; SURFACE-AREA ; MIXED OXIDES ; CO ; MN ; REDUCTION ; CU
AbstractThe catalytic oxidation of toluene to CO2 and H2O over nanoflower spinel CoMn2O4, synthesized by the oxalic acid sol-gel method has been investigated, and it demonstrates lower activation energy (35.5 kJ/mol) for toluene oxidation compared with that using the metal oxides (Co3O4, MnOx and Co3O4/MnOx), which shows nearly 100% conversion of toluene at 220 degrees C in the presence or absence of water vapor (2.0 vol %). Compared with the metal oxides (Co3O4/MnO MnOx, and Co3O4), the obtained spinel CoMn2O4 has a larger surface area, rich cationic vacancy, and high mobility of oxygen species, which are the reasons for its high activity for toluene oxidation. The different oxygen species shows the different role in VOCs oxidation, and the in situ designed-TP techniques are conducted to investigate the involvement of surface lattice oxygen, bulk lattice oxygen, and gaseous oxygen in catalytic oxidation of toluene over the spinel CoMn2O4 and Co3O4/MnOx catalysts. For spinel CoMn2O4, the surface lattice oxygen is the reactive oxygen species, which first induces the catalytic reaction. Furthermore, the gaseous oxygen moves to the bulk phase lattice and then migrates to the surface to form the surface lattice oxygen, which is different from the mixed-metal oxides Co3O4/MnOx that dissociates and activates gaseous oxygen only on the surface of the catalyst and requires a higher temperature. In addition, it is found that the toluene oxidation occurs via the benzyl alcohol benzoate anhydride acetate reaction pathway over spinel CoMn2O4, and the conversion of the surface anhydride is the rate-controlling step, especially at 200-210 degrees C, which is also different from the mixed-metal oxides Co3O4/MnOx, These results could provide a considerable experimental basis for understanding the mechanism by which oxygen species participate in toluene oxidation.
Language英语
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Programme of Introducing Talents of Discipline to Universities ; Programme of Introducing Talents of Discipline to Universities ; State Key Laboratory of Catalysis in DICP ; State Key Laboratory of Catalysis in DICP
WOS IDWOS:000480503700011
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/173511
Collection中国科学院大连化学物理研究所
Corresponding AuthorQu, Zhenping
Affiliation1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Dong, Cui,Qu, Zhenping,Qin, Yuan,et al. Revealing the Highly Catalytic Performance of Spinel CoMn2O4 for Toluene Oxidation: Involvement and Replenishment of Oxygen Species Using In Situ Designed-TP Techniques[J]. ACS CATALYSIS,2019,9(8):6698-6710.
APA Dong, Cui,Qu, Zhenping,Qin, Yuan,Fu, Qiang,Sun, Hongchun,&Duan, Xiaoxiao.(2019).Revealing the Highly Catalytic Performance of Spinel CoMn2O4 for Toluene Oxidation: Involvement and Replenishment of Oxygen Species Using In Situ Designed-TP Techniques.ACS CATALYSIS,9(8),6698-6710.
MLA Dong, Cui,et al."Revealing the Highly Catalytic Performance of Spinel CoMn2O4 for Toluene Oxidation: Involvement and Replenishment of Oxygen Species Using In Situ Designed-TP Techniques".ACS CATALYSIS 9.8(2019):6698-6710.
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