Dehydrogenation of Some Alcohols by the Molten Metal Catalysts
Dehydrogenation of Some Alcohols by the Molten Metal Catalysts
复制标题
熔融金属催化剂对某些醇的脱氢
DOI：
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发表时间：
1972
期刊：
影响因子：
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通讯作者：
Y. Ogino
中科院分区：
文献类型：
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作者：
Yasuo Saito;N. Hiramatsu;N. Kawanami;Y. Ogino
熔融金属的催化活性，即。e.以醇类（乙醇、正丙醇、异丙醇、烯丙醇、环己醇、苄醇）的脱氢反应为试验反应，测定了锌、镓和铟的含量，发现除了烯丙醇通过副反应大量转化为丙醛外，所有醇类在熔融金属催化剂上都具有较高的脱氢选择性。在三种熔融金属中，熔融锌显示出对所有醇的最高活性。此外，熔融锌表现出最高的选择性，几乎所有的醇除了乙醇的脱氢。从实验数据，一级动力学参数E（活化能）和A（频率因子）进行了评估。一个单一的直线log A-E关系被发现不仅适用于本工作的数据，而且适用于以前的工作的数据（丁醇的数据）。
Catalytic activities of the molten metals, i. e. zinc, gallium and indium were measured by employing the dehydrogenation reactions of alcohols (ethanol, n-, isopropanol, allylalcohol, cyclohexanol, benzylalcohol) as the test reaction.Except allylalcohol which converted considerably to propionaldehyde via a side reaction, all alcohols were dehydrogenated with considerably high selectivities by the molten metal catalysts. Among the three molten metals, the molten zinc showed the highest activity for all alcohols. Further, the molten zinc showed the highest selectivity for the dehydrogenation of almost all alcohols except ethanol.From the experimental data, the first order kinetic parameter E (activation energy) and A (frequency factor) were evaluated. A single straight line log A-E relationship was found to hold not only for the data of the present work but also for the data of the preceding work (data for butanols).