Steam Reforming of Ethanol to Acetaldehyde and Acetone Over Al-Doped ZnO Catalysts.

ABSTRACT: Ethanol steam reforming with a water to ethanol molar ratio of 7:1 was investigated over pure ZnO and Al-doped ZnO catalysts with up to 10 mol% Al³⁺ synthesized via coprecipitation. This synthesis route yielded wurtzite ZnO, with Al being incorporated into the ZnO lattice at low doping levels. Al doping was found to alter the reaction pathway of ethanol steam reforming by suppressing the consecutive acetaldehyde conversion to acetic acid and further to acetone. Continuous kinetic experiments using a plug flow reactor resulted in almost full conversion and an acetone selectivity of 53% at 450°C over pure ZnO. Feeding acetaldehyde and acetic acid confirmed a consecutive multistep reaction network starting with ethanol dehydrogenation to acetaldehyde, followed by its conversion to

SUBMITTER: Muller AS 

PROVIDER: S-EPMC12766874 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature