کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
65701 | 48400 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of pyruvic acid by vapour phase catalytic oxidative dehydrogenation of lactic acid Synthesis of pyruvic acid by vapour phase catalytic oxidative dehydrogenation of lactic acid](/preview/png/65701.png)
• 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.
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Journal: Journal of Molecular Catalysis A: Chemical - Volume 377, October 2013, Pages 123–128