| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 65701 | Journal of Molecular Catalysis A: Chemical | 2013 | 6 Pages |
•Linear relationship for reducibility and Ni/Nb atomic ratio.•Specific productivity correlates to Ni/Nb ratio.•Low reaction temperature inhibits decarboxylation to acetaldehyde.
The oxidative dehydrogenation of lactic acid to pyruvic acid was studied over nickel–niobium mixed oxide catalysts with different Ni/Nb ratios. Furthermore the catalysts were characterized by XRD, ICP, TPR and nitrogen adsorption. Thus, it was found that the reducibility and the surface productivity were directly correlated to the Ni/Nb ratio, whereby increased Nb amount was found favourable for the catalytic performance. Furthermore, the formation of by-products was studied showing that acetaldehyde was formed by thermal decarboxylation of lactic acid and acetic acid yielded from the catalytic oxidation of the as-formed acetaldehyde.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (138 K)Download as PowerPoint slide
