Catalytic liquid-phase oxidation of acetaldehyde to acetic acid over a Pt/CeO2-ZrO2-SnO2/γ-alumina catalyst

Pil-Gyu Choi; Takanobu Ohno; Toshiyuki Masui; Nobuhito Imanaka

doi:10.1016/j.jes.2015.04.017

Catalytic liquid-phase oxidation of acetaldehyde to acetic acid over a Pt/CeO2-ZrO2-SnO2/γ-alumina catalyst

J Environ Sci (China). 2015 Oct 1:36:63-6. doi: 10.1016/j.jes.2015.04.017. Epub 2015 Jul 7.

Authors

Pil-Gyu Choi¹, Takanobu Ohno², Toshiyuki Masui², Nobuhito Imanaka³

Affiliations

¹ Department of Applied Chemistry, Faculty of Engineering, Osaka University, Osaka 565-0871, Japan. Electronic address: CHOI-PG@chem.eng.osaka-u.ac.jp.
² Department of Applied Chemistry, Faculty of Engineering, Osaka University, Osaka 565-0871, Japan.
³ Department of Applied Chemistry, Faculty of Engineering, Osaka University, Osaka 565-0871, Japan. Electronic address: imanaka@chem.eng.osaka-u.ac.jp.

PMID: 26456607
DOI: 10.1016/j.jes.2015.04.017

Abstract

Pt/CeO2-ZrO2-SnO2/γ-Al2O3 catalysts were prepared by co-precipitation and wet impregnation methods for catalytic oxidation of acetaldehyde to acetic acid in water. In the present catalysts, Pt and CeO2-ZrO2-SnO2 were successfully dispersed on the γ-Al2O3 support. Dependences of platinum content and reaction time on the selective oxidation of acetaldehyde to acetic acid were investigated to optimize the reaction conditions for obtaining both high acetaldehyde conversion and highest selectivity to acetic acid. Among the catalysts, a Pt(6.4wt.%)/Ce0.68Zr0.17Sn0.15O2.0(16wt.%)/γ-Al2O3 catalyst showed the highest acetaldehyde oxidation activity. On this catalyst, acetaldehyde was completely oxidized after the reaction at 0°C for 8hr, and the selectivity to acetic acid reached to 95% and higher after the reaction for 4hr and longer.

Keywords: Acetaldehyde; Catalyst; Liquid-phase oxidation; Rare earths.

MeSH terms

Acetaldehyde / chemistry*
Acetic Acid / chemistry*
Catalysis
Oxidation-Reduction
Waste Disposal, Fluid / methods*
Water Pollutants, Chemical / chemistry*

Substances

Water Pollutants, Chemical
Acetaldehyde
Acetic Acid