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
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DOI：
10.1016/j.molcata.2013.05.006
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发表时间：
2013-10-01
影响因子：
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通讯作者：
Katryniok, Benjamin
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文献类型：
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作者：
Lomate, Samadhan;Bonnotte, Thomas;Katryniok, Benjamin
以不同Ni/Nb比的镍铌混合氧化物为催化剂，研究了乳酸氧化脱氢制丙酮酸的反应。并用XRD、ICP、TPR和氮吸附对催化剂进行了表征。因此，发现还原性和表面生产率与Ni/Nb比直接相关，从而发现Nb量的增加有利于催化性能。此外，对副产物的形成进行了研究，表明乙醛是由乳酸和催化氧化生成的乙酸热脱羧形成的。(c) 2013 Elsevier B.V.版权所有
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. (c) 2013 Elsevier B.V. All rights reserved.