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

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 r...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental sciences (China) 2015-10, Vol.36 (10), p.63-66
Main Authors: Choi, Pil-Gyu, Ohno, Takanobu, Masui, Toshiyuki, Imanaka, Nobuhito
Format: Article
Language:English
Subjects:
Acetaldehyde
Acetaldehyde - chemistry
Acetic Acid - chemistry
Catalysis
Catalyst
Liquid-phase oxidation
Oxidation-Reduction
Rare earths
SnO2
Waste Disposal, Fluid - methods
Water Pollutants, Chemical - chemistry
ZrO2
γ-Al2O3
乙酸
乙醛
反应条件
氧化铝催化剂
液相催化氧化
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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（6.4 wt.%）/Ce0.68Zr0.17Sn0.15O2.0（16 wt.%）/γ-Al2O3 catalyst showed the highest acetaldehyde oxidation activity. On this catalyst, acetaldehyde was completely oxidized after the reaction at 0°C for 8 hr, and the selectivity to acetic acid reached to 95%and higher after the reaction for 4 hr and longer.
ISSN:1001-0742
1878-7320
DOI:10.1016/j.jes.2015.04.017