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Catalytic oxidation of benzene over ruthenium-cobalt bimetallic catalysts and study of its mechanism
Liu, Xiaolong1; Zeng, Junlin1; Shi, Wenbo1,2; Wang, Jian1; Zhu, Tingyu1,3; Chen, Yunfa1
2017
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume7Issue:1Pages:213-221
Abstract

In this work, ruthenium-based bimetallic catalysts of the formula Ru-5M/TiO2 (M = Mn, Co, Ce, Cu, Fe) were prepared and evaluated in benzene oxidation, and Ru-Co-5/TiO2 exhibited the lowest complete oxidation temperature (220 degrees C), demonstrating Co3O4 as the best dopant. The influence of the Ru and Co contents on the catalytic activity was also studied, and 1 wt% Ru and 5 wt% Co3O4 were confirmed. Water vapor showed an inhibition effect on benzene oxidation at 210 degrees C, whereas the catalytic efficiency was barely influenced at a higher temperature (230 degrees C). STEM analyses revealed that Ru-Co bimetallic species showed similar distributions on the catalytic surface. Based on the correlation of the catalytic results with various characterization techniques, the synergistic effect between Ru and Co was well demonstrated, and a four-step transformation in the oxidation process was concluded. Besides, systematic in situ FTIR studies for benzene oxidation over Ru/TiO2, Co/TiO2, and Ru-5Co/TiO2 were conducted and compared, and many organic intermediates were observed in the in situ FTIR spectra. Accordingly, the reaction mechanism for benzene oxidation over the Ru-Co bimetallic catalyst was proposed.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c6cy02141g
Indexed BySCI
Language英语
WOS KeywordVolatile Organic-compounds ; Preferential Oxidation ; V2o5/tio2 Catalysts ; Low-temperatures ; Oxygen Mobility ; Oxide Catalysts ; Carbon-monoxide ; Gold Catalysts ; Ethyl-acetate ; Doped Ceria
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNatural Science Foundation of China(21607154) ; Beijing Natural Science Foundation(8164063)
WOS IDWOS:000392399900019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21876
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
2.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaolong,Zeng, Junlin,Shi, Wenbo,et al. Catalytic oxidation of benzene over ruthenium-cobalt bimetallic catalysts and study of its mechanism[J]. CATALYSIS SCIENCE & TECHNOLOGY,2017,7(1):213-221.
APA Liu, Xiaolong,Zeng, Junlin,Shi, Wenbo,Wang, Jian,Zhu, Tingyu,&Chen, Yunfa.(2017).Catalytic oxidation of benzene over ruthenium-cobalt bimetallic catalysts and study of its mechanism.CATALYSIS SCIENCE & TECHNOLOGY,7(1),213-221.
MLA Liu, Xiaolong,et al."Catalytic oxidation of benzene over ruthenium-cobalt bimetallic catalysts and study of its mechanism".CATALYSIS SCIENCE & TECHNOLOGY 7.1(2017):213-221.
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