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Higher Oxidation State Responsible for Ozone Decomposition at Room Temperature over Manganese and Cobalt Oxides: Effect of Calcination Temperature
Alternative TitleOzone-Sci. Eng.
Tang, Wen-Xiang1,2; Liu, Hai-Di1; Wu, Xiao-Feng1; Chen, Yun-Fa1
2014
Source PublicationOZONE-SCIENCE & ENGINEERING
ISSN0191-9512
Volume36Issue:5Pages:502-512
AbstractThe heterogeneous catalytic decomposition of ozone was investigated over unsupported manganese and cobalt oxide at room temperature. All catalysts were characterized by X-ray diffraction (XRD), N-2 adsorption-desorption (Brunauer-Emmet-Teller method), H-2-temperature programmed reduction (H-2-TPR) and X-ray photoelectron spectroscopy (XPS). The catalytic activity test indicated that these oxides had a good activity on ozone conversion meanwhile the catalysts remained highly active over time under reaction conditions. The treated temperature of the catalyst had a significant impact on the performance of ozone abatement and the samples treated at lower temperature showed higher activity. The surface area decreased obviously when developing the calcination temperature and H-2-TPR results demonstrated that much higher oxidation state of metal ions and active oxygen species were maintained on the surface under low treated temperature. XPS analysis showed that there were higher oxidation states of metal ions (Mn4+ and Co3+) and adsorbed oxygen species on the surface of catalysts treated at lower temperature, both of which play a significant role in ozone decomposition. However, the activity of manganese oxide was higher than that of cobalt oxide and the possible reason for this phenomenon was discussed.; The heterogeneous catalytic decomposition of ozone was investigated over unsupported manganese and cobalt oxide at room temperature. All catalysts were characterized by X-ray diffraction (XRD), N-2 adsorption-desorption (Brunauer-Emmet-Teller method), H-2-temperature programmed reduction (H-2-TPR) and X-ray photoelectron spectroscopy (XPS). The catalytic activity test indicated that these oxides had a good activity on ozone conversion meanwhile the catalysts remained highly active over time under reaction conditions. The treated temperature of the catalyst had a significant impact on the performance of ozone abatement and the samples treated at lower temperature showed higher activity. The surface area decreased obviously when developing the calcination temperature and H-2-TPR results demonstrated that much higher oxidation state of metal ions and active oxygen species were maintained on the surface under low treated temperature. XPS analysis showed that there were higher oxidation states of metal ions (Mn4+ and Co3+) and adsorbed oxygen species on the surface of catalysts treated at lower temperature, both of which play a significant role in ozone decomposition. However, the activity of manganese oxide was higher than that of cobalt oxide and the possible reason for this phenomenon was discussed.
KeywordOzone Ozone Decomposition Catalysis Oxidation State Thermal Treatment
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1080/01919512.2014.894454
URL查看原文
Indexed BySCI
Language英语
WOS KeywordBOND VALENCE SUMS ; COORDINATION CHEMISTRY ; AIR-POLLUTION ; O BONDS ; CATALYSTS ; GAS ; NOX ; CO ; SPECTROSCOPY ; COMPLEXES
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000342320800012
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11653
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Tang, Wen-Xiang,Liu, Hai-Di,Wu, Xiao-Feng,et al. Higher Oxidation State Responsible for Ozone Decomposition at Room Temperature over Manganese and Cobalt Oxides: Effect of Calcination Temperature[J]. OZONE-SCIENCE & ENGINEERING,2014,36(5):502-512.
APA Tang, Wen-Xiang,Liu, Hai-Di,Wu, Xiao-Feng,&Chen, Yun-Fa.(2014).Higher Oxidation State Responsible for Ozone Decomposition at Room Temperature over Manganese and Cobalt Oxides: Effect of Calcination Temperature.OZONE-SCIENCE & ENGINEERING,36(5),502-512.
MLA Tang, Wen-Xiang,et al."Higher Oxidation State Responsible for Ozone Decomposition at Room Temperature over Manganese and Cobalt Oxides: Effect of Calcination Temperature".OZONE-SCIENCE & ENGINEERING 36.5(2014):502-512.
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