| DOI: | 10.1016/j.watres.2017.10.035
|
| Scopus记录号: | 2-s2.0-85032709845
|
| 论文题名: | Reaction of 2-propanol with ozone in aqueous media |
| 作者: | Reisz E.; von Sonntag C.; Tekle-Röttering A.; Naumov S.; Schmidt W.; Schmidt T.C.
|
| 刊名: | Water Research
|
| ISSN: | 431354
|
| 出版年: | 2018
|
| 卷: | 128 | | 起始页码: | 171
|
| 结束页码: | 182
|
| 语种: | 英语
|
| 英文关键词: | 2-Propanol
; Activation energy
; Hydride transfer
; Ozone
; Pre-exponential factor
; Rate constant
|
| Scopus关键词: | Acetone
; Hydrides
; Ozone
; Rate constants
; Temperature distribution
; 2-propanol
; Aqueous media
; Aqueous system
; Hydride transfers
; Oxidation products
; Preexponential factor
; Second-order rate constants
; Temperature dependence
; Activation energy
; 2 propanol
; acetaldehyde
; acetic acid
; acetone
; formaldehyde
; formic acid
; hydrogen peroxide
; ozone
; 2 propanol
; formic acid derivative
; ozone
; water
; activation energy
; anion
; aqueous solution
; chemical compound
; chemical reaction
; hydrogen peroxide
; oxidation
; ozone
; reaction kinetics
; reaction rate
; thermodynamics
; aqueous solution
; Article
; chemical reaction
; electrophilicity
; energy
; kinetic parameters
; oxidation
; priority journal
; rate constant
; reaction analysis
; temperature dependence
; thermodynamics
; chemistry
; kinetics
; oxidation reduction reaction
; temperature
; 2-Propanol
; Acetone
; Formates
; Hydrogen Peroxide
; Kinetics
; Oxidation-Reduction
; Ozone
; Temperature
; Thermodynamics
; Water
|
| 英文摘要: | This paper deals with reactions occurring in the aqueous system of 2-propanol/ozone. The considered reactions are discussed from thermodynamic and kinetic points of view. The major finding refers to the fact that 2-propanol reacts with O3 mainly via hydride transfer: (HO)(H3C)2C–H + O3 → [(HO)(H3C)2C+ + HO3 −]cage → (HO)(H3C)2C+ + HO3 − → (H3C)2C[dbnd6]O + H2O + O2 Arguments supporting this proposed mechanism are: high exergonicity of reaction (ΔG = −234 kJ mol−1 for the first two steps), low HO[rad] yield - (2.4 ± 0.5)% and high acetone yield - (87.2 ± 1.5)%. Other oxidation products detected within the system are acetaldehyde - (1.4 ± 0.1)%, formaldehyde - (4.0 ± 0.1)%, acetic acid - (2.8 ± 0.2)%, formic acid - (0.6 ± 0.2)% and hydrogen peroxide - (1.5 ± 0.1)%. The temperature dependence of the second order rate constant for the reaction 2-propanol + O3 → products is ln kII = 29.64–8500 × T−1. The activation energy and pre-exponential factor derived from this relationship are (71 ± 3) kJ mol−1 and (7.5 ± 6.4) × 1012 M−1 s−1, respectively. At 23 °C, the second order rate constant is kII = (2.7 ± 0.1) M−1 s−1. The low reaction rate can be explained by the transfer of one hydride ion from 2-propanol to electrophilic ozone. © 2017 Elsevier Ltd |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/113135
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | University “Politehnica” of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering, Bulevardul Vasile Pârvan Nr. 6, Timişoara, 300223, Romania; Max Planck Institut für Bioanorganische Chemie, Stiftstrasse 34-36, Mülheim an der Ruhr, 45470, Germany; Westfälische Hochschule Gelsenkirchen, Neidenburger Strasse 10, Gelsenkirchen, 45877, Germany; Leibniz Institut für Oberflächenmodifizierung (IOM), Permoserstrasse 15, Leipzig, 04318, Germany; Universität Duisburg-Essen, Instrumentelle Analytische Chemie, Universitätsstrasse 5, Essen, 45117, Germany
|
| Recommended Citation: | |
Reisz E.,von Sonntag C.,Tekle-Röttering A.,et al. Reaction of 2-propanol with ozone in aqueous media[J]. Water Research,2018-01-01,128
|
|
|