DOI: 10.1016/j.watres.2018.10.053
Scopus记录号: 2-s2.0-85055560273
论文题名: New insight into the reactivity of Mn(III) in bisulfite/permanganate for organic compounds oxidation: The catalytic role of bisulfite and oxygen
作者: Zhong S. ; Zhang H.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 148 起始页码: 198
结束页码: 207
语种: 英语
英文关键词: Bisulfite and permanganate
; Bisulfite/oxygen reaction
; Disproportionation
; Mn(III) catalyst
; Mn(III) oxidant
; Water treatment
Scopus关键词: Catalysis
; Catalysts
; Catalytic oxidation
; Knowledge management
; Manganese removal (water treatment)
; Organic compounds
; Oxidation
; Oxygen
; Potash
; Sodium compounds
; Water treatment
; Bisulfite and permanganate
; Bisulfite/oxygen reaction
; Catalytic reactions
; Catalytic role
; Contaminant removal
; Disproportionations
; Rapid oxidation
; Reaction system
; Manganese compounds
; bisulfite
; manganese
; organic compound
; oxygen
; permanganate potassium
; phenol
; catalysis
; catalyst
; chemical property
; chemical reaction
; manganese
; organic compound
; oxidant
; oxidation
; oxygen
; sulfite
; water treatment
; Article
; catalysis
; catalyst
; oxidation
; priority journal
; reaction analysis
; waste component removal
英文摘要: A recently discovered bisulfite(HSO 3 − )/permanganate(MnO 4 − ) system was reported to produce highly reactive free Mn(III) that can oxidize organic compounds in milliseconds. However, this characteristic reactivity was not found in all other known reaction systems that can also produce free Mn(III). Why can Mn(III) in NaHSO 3 /KMnO 4 be so active? Here, we found NaHSO 3 and O 2 acted as catalysts for the reaction between Mn(III) and organic compounds. Without O 2 , 0% of organic compounds were oxidized in NaHSO 3 /KMnO 4 , indicating the absence of O 2 inactivated Mn(III) reactivity. When the reaction between NaHSO 3 and KMnO 4 was monitored in air, Mn(III) catalyzed rapid oxidation of NaHSO 3 by O 2 . Then, the Mn(III) that could oxidize organic compounds was found to be the ones involved in the catalytic reaction between NaHSO 3 and O 2 , thus the link between O 2 and Mn(III) reactivity was established. Finally, NaHSO 3 /O 2 can be viewed as catalysts for the reaction between Mn(III) and organic compounds because 1) when Mn(III) was involved in oxidizing organic compounds, it stopped being the catalyst for the reaction between NaHSO 3 and O 2 so that they were consumed to a much smaller extent; and 2) without NaHSO 3 and O 2 , Mn(III) lost its oxidation ability. To the best of our knowledge, this is the first report on “catalytic role exchange” where Mn(III) is the catalyst for NaHSO 3 /O 2 reaction while NaHSO 3 /O 2 are the catalysts for Mn(III)/organic compounds reaction. Understanding the critical role of oxygen in NaHSO 3 /KMnO 4 will enable us to apply this technology more efficiently toward contaminant removal. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122213
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Civil Engineering, Case Western Reserve University, 2104 Adelbert Road, Cleveland, OH 44106-7201, United States
Recommended Citation:
Zhong S.,Zhang H.. New insight into the reactivity of Mn(III) in bisulfite/permanganate for organic compounds oxidation: The catalytic role of bisulfite and oxygen[J]. Water Research,2019-01-01,148