Liquid phase hydrogenation of tetralin on Ni/Al2O3
Liquid phase hydrogenation of tetralin on Ni/Al2O3
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DOI：
10.1016/s0009-2509(00)00346-8
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发表时间：
2001-02
影响因子：
4.7
通讯作者：
Petri A. Rautanen;J. Aittamaa;A. Krause
中科院分区：
文献类型：
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作者：
Petri A. Rautanen;J. Aittamaa;A. Krause
在 Ni/γ-Al2O3 催化剂上研究了在 85–160°C 的温度范围和 20–40 bar 的压力范围内，癸烷中四氢化萘加氢的动力学。氢化通过从四氢化萘到顺式和反式十氢化萘的连续步骤进行，并形成八氢化萘作为反应中间体。除了氢化之外，除了严重的催化剂失活之外，还观察到一些脱氢成萘。对于四氢化萘，氢化遵循低级速率，而对于氢则接近一级速率。所提出的基于 Langmuir-Hinshelwood 型机理的动力学模型包括四氢化萘通过中间步骤氢化成顺式和反式十氢化萘。该模型能够充分描述实验结果并给出具有物理意义的参数。
The kinetics of the tetralin hydrogenation in decane was studied on a Ni/γ-Al2O3catalyst over a temperature range of 85–160°C and a pressure range of 20–40 bar . The hydrogenation occurred by sequential steps from tetralin to cis- and trans-decalins with the formation of octalins as reaction intermediates. Besides the hydrogenation some dehydrogenation to naphthalene was observed in addition to severe catalyst deactivation. The hydrogenation followed low-order rate towards tetralin and close to first-order towards hydrogen. The proposed kinetic model based on a Langmuir–Hinshelwood-type mechanism included the tetralin hydrogenation through intermediate steps to cis- and trans-decalin. The model was able to describe the experimental results adequately and gave physically meaningful parameters.