アルミナ，シリカ，チタニア，酸化ニオブおよび酸化タンタルを担体としたニッケル触媒によるプロピオンアルデヒド水素添加反応の動力学

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  • Kinetics of propionaldehyde hydrogenation with nickel catalysts supported on Al2O3, SiO2, TiO2, Nb2O5 and Ta2O5.
  • アルミナ シリカ チタニア サンカ ニオブ オヨビ サンカ タンタル オ タン

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Among the support effects on metal catalyst, strong interaction between metal and support (SMSI) is an attractive and up-to-date subject. In the study of this effect, specific activity at a definitive reaction condition is usually used. But for more precise examination, an analysis using rate parameters, such as rate constant, equilibrium constant, activation energy and heat of adsorption is required. In this study, the hydrogenation of propionaldehyde with nickel catalysts supported on various oxides was studied kinetically over a wide range of reaction conditions. The effect of SMSI on the reaction was tested. The supports were Al2O3, SiO2, TiO2, Nb2O5 and Ta2O5. At the condition in which the minor reactions were negligible the rate equation was derived and the rate parameters were determined. The experimental results for all catalysts used were well represented by this rate equation. In addition, the activation energy and the heat of adsorption were the same even for the SMSI state of the catalyst.

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