Catalytic decarboxylation of acetic acid with zirconia catalyst in supercritical water

Masaru Watanabe; Hiroshi Inomata; Richard Lee Smith; Kunio Arai

doi:10.1016/S0926-860X(01)00677-9

Catalytic decarboxylation of acetic acid with zirconia catalyst in supercritical water

Masaru Watanabe, Hiroshi Inomata, Richard Lee Smith, Kunio Arai

Tohoku University

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

65 Citations (Scopus)

Abstract

Reactions of acetic acid were conducted with alkali (KOH) and zirconia (ZrO₂) catalysts in supercritical water (SCW) (673K and 25MPa-40MPa). For comparison, we also conducted the experiments without catalyst and/or water at the same reaction conditions. Decarboxylation of acetic acid with zirconia in supercritical water formed acetone, CO₂, and water without forming any other compound. On the other hand, decomposition of acetic acid with alkali produced methane (CH₄) and CO₂ with acetone. Without water and/or catalyst, the main products were also CO₂ and CH₄ (without catalyst) or acetone (with ZrO₂); however, by-products, such as a water-insoluble compound were formed. The structure of zirconia was changed during reaction in supercritical water. The rate of decarboxylation of acetic acid exerted an effect on the particle size of zirconia.

Original language	English
Pages (from-to)	149-156
Number of pages	8
Journal	Applied Catalysis A: General
Volume	219
Issue number	1-2
DOIs	https://doi.org/10.1016/S0926-860X(01)00677-9
Publication status	Published - 2001 Oct 5

Keywords

Acetic acid
Alkali
Decarboxylation
Supercritical water
Zirconia

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title = "Catalytic decarboxylation of acetic acid with zirconia catalyst in supercritical water",

abstract = "Reactions of acetic acid were conducted with alkali (KOH) and zirconia (ZrO2) catalysts in supercritical water (SCW) (673K and 25MPa-40MPa). For comparison, we also conducted the experiments without catalyst and/or water at the same reaction conditions. Decarboxylation of acetic acid with zirconia in supercritical water formed acetone, CO2, and water without forming any other compound. On the other hand, decomposition of acetic acid with alkali produced methane (CH4) and CO2 with acetone. Without water and/or catalyst, the main products were also CO2 and CH4 (without catalyst) or acetone (with ZrO2); however, by-products, such as a water-insoluble compound were formed. The structure of zirconia was changed during reaction in supercritical water. The rate of decarboxylation of acetic acid exerted an effect on the particle size of zirconia.",

keywords = "Acetic acid, Alkali, Decarboxylation, Supercritical water, Zirconia",

author = "Masaru Watanabe and Hiroshi Inomata and Smith, {Richard Lee} and Kunio Arai",

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T1 - Catalytic decarboxylation of acetic acid with zirconia catalyst in supercritical water

AU - Watanabe, Masaru

AU - Inomata, Hiroshi

AU - Smith, Richard Lee

AU - Arai, Kunio

PY - 2001/10/5

Y1 - 2001/10/5

N2 - Reactions of acetic acid were conducted with alkali (KOH) and zirconia (ZrO2) catalysts in supercritical water (SCW) (673K and 25MPa-40MPa). For comparison, we also conducted the experiments without catalyst and/or water at the same reaction conditions. Decarboxylation of acetic acid with zirconia in supercritical water formed acetone, CO2, and water without forming any other compound. On the other hand, decomposition of acetic acid with alkali produced methane (CH4) and CO2 with acetone. Without water and/or catalyst, the main products were also CO2 and CH4 (without catalyst) or acetone (with ZrO2); however, by-products, such as a water-insoluble compound were formed. The structure of zirconia was changed during reaction in supercritical water. The rate of decarboxylation of acetic acid exerted an effect on the particle size of zirconia.

AB - Reactions of acetic acid were conducted with alkali (KOH) and zirconia (ZrO2) catalysts in supercritical water (SCW) (673K and 25MPa-40MPa). For comparison, we also conducted the experiments without catalyst and/or water at the same reaction conditions. Decarboxylation of acetic acid with zirconia in supercritical water formed acetone, CO2, and water without forming any other compound. On the other hand, decomposition of acetic acid with alkali produced methane (CH4) and CO2 with acetone. Without water and/or catalyst, the main products were also CO2 and CH4 (without catalyst) or acetone (with ZrO2); however, by-products, such as a water-insoluble compound were formed. The structure of zirconia was changed during reaction in supercritical water. The rate of decarboxylation of acetic acid exerted an effect on the particle size of zirconia.

KW - Acetic acid

KW - Alkali

KW - Decarboxylation

KW - Supercritical water

KW - Zirconia

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JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

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ER -

Catalytic decarboxylation of acetic acid with zirconia catalyst in supercritical water

Abstract

Keywords

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