Kinetics and Mechanisms of Supercritical Water Oxidation of Methylamines
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概要
- 論文の詳細を見る
Supercritical water oxidation (SCWO) of dimethylamine (DMA) and trimethylamine (TMA) was conducted at 400–450°C and 25 MPa in the presence of excess O2. An apparent induction time was experimentally observed only in the oxidation of DMA. Monomethylamine (MMA) was the common major product in both oxidations of DMA and TMA in spite of the different numbers of substituted methyl groups, suggesting that the oxidations of two amines were via different reaction mechanisms. The SCWO of DMA was considered as a radical chain reaction that proceeded via such a peroxyl radical as CH3NHCH2O2, leading to the appearance of the induction time. In contrast, the SCWO of TMA mainly proceed via formation of N-methyl methanimine (CH2=NCH3) followed by its hydrolysis to form MMA and formaldehyde. We proposed global reaction mechanisms that can reasonably explain the experimental observations in DMA and TMA oxidation in supercritical water.
- 社団法人 化学工学会の論文
- 2006-09-01
著者
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Oshima Yoshito
Department Of Environment Systems Graduate School Of Frontier Sciences The University Of Tokyo
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Oshima Yoshito
Department Of Chemical Engineering Facutly Of Engineering The University Of Tokyo
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Li Hong
Department Of Agricultural And Biosystems Engineering Iowa State University
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Li Hong
Department Of Chemical System Engineering School Of Engineering The University Of Tokyo
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Oshima Yoshito
Dep. Of Environment Systems Graduate School Of Frontier Sciences The Univ. Of Tokyo
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