Analysis of the density effect on partial oxidation of methane in supercritical water

Takafumi Sato; Masaru Watanabe; Richard Lee Jr. Smith; Tadafumi Adschiri; Kunio Arai

doi:10.1016/S0896-8446(03)00008-1

Analysis of the density effect on partial oxidation of methane in supercritical water

Takafumi Sato, Masaru Watanabe, Richard Lee Jr. Smith, Tadafumi Adschiri, Kunio Arai

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Partial oxidation of methane was conducted in supercritical water at O ₂ /CH ₄ ratios of 0.03 at 673 K with a flow-type reactor. The main products were CO, methanol, formaldehyde and a small amount of CO ₂ and H ₂ . With increasing water density, methane conversion increased due to the formation of formaldehyde. A free radical reaction model was applied to this reaction and it was confirmed that the dependence of selectivities for CO and CO ₂ on pressure could be well described. The experimental results and model prediction shows that an increase of water density shifted product distribution to partial oxidation products and formaldehyde was found to play an important role in the product selectivity and the partial oxidation chemistry.

Original language	English
Pages (from-to)	69-77
Number of pages	9
Journal	Journal of Supercritical Fluids
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/S0896-8446(03)00008-1
Publication status	Published - 2004 Jan 1

Keywords

Aldehyde
Kinetics
Methane
Oxidation
Supercritical water

ASJC Scopus subject areas

Chemical Engineering(all)
Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Analysis of the density effect on partial oxidation of methane in supercritical water",

abstract = " Partial oxidation of methane was conducted in supercritical water at O 2 /CH 4 ratios of 0.03 at 673 K with a flow-type reactor. The main products were CO, methanol, formaldehyde and a small amount of CO 2 and H 2 . With increasing water density, methane conversion increased due to the formation of formaldehyde. A free radical reaction model was applied to this reaction and it was confirmed that the dependence of selectivities for CO and CO 2 on pressure could be well described. The experimental results and model prediction shows that an increase of water density shifted product distribution to partial oxidation products and formaldehyde was found to play an important role in the product selectivity and the partial oxidation chemistry.",

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T1 - Analysis of the density effect on partial oxidation of methane in supercritical water

AU - Sato, Takafumi

AU - Watanabe, Masaru

AU - Smith, Richard Lee Jr.

AU - Adschiri, Tadafumi

AU - Arai, Kunio

PY - 2004/1/1

Y1 - 2004/1/1

N2 - Partial oxidation of methane was conducted in supercritical water at O 2 /CH 4 ratios of 0.03 at 673 K with a flow-type reactor. The main products were CO, methanol, formaldehyde and a small amount of CO 2 and H 2 . With increasing water density, methane conversion increased due to the formation of formaldehyde. A free radical reaction model was applied to this reaction and it was confirmed that the dependence of selectivities for CO and CO 2 on pressure could be well described. The experimental results and model prediction shows that an increase of water density shifted product distribution to partial oxidation products and formaldehyde was found to play an important role in the product selectivity and the partial oxidation chemistry.

AB - Partial oxidation of methane was conducted in supercritical water at O 2 /CH 4 ratios of 0.03 at 673 K with a flow-type reactor. The main products were CO, methanol, formaldehyde and a small amount of CO 2 and H 2 . With increasing water density, methane conversion increased due to the formation of formaldehyde. A free radical reaction model was applied to this reaction and it was confirmed that the dependence of selectivities for CO and CO 2 on pressure could be well described. The experimental results and model prediction shows that an increase of water density shifted product distribution to partial oxidation products and formaldehyde was found to play an important role in the product selectivity and the partial oxidation chemistry.

KW - Aldehyde

KW - Kinetics

KW - Methane

KW - Oxidation

KW - Supercritical water

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Analysis of the density effect on partial oxidation of methane in supercritical water

Abstract

Keywords

ASJC Scopus subject areas

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