Modelling a kinetic deviation of the magnesium hydrogenation reaction at conditions close to equilibrium
Modelling a kinetic deviation of the magnesium hydrogenation reaction at conditions close to equilibrium
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DOI：
10.1016/j.ijhydene.2019.04.036
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发表时间：
2019-11-08
影响因子：
7.2
通讯作者：
Walker, Gavin S.
中科院分区：
文献类型：
--
作者：
Adams, Marcus;Grant, David M.;Walker, Gavin S.
在接近平衡的条件下，导出了镁加氢反应的模型。反应机理涉及一个吸附元素，该模型是Langmuir吸附模型的扩展。引入了站点可用性（sigma(s)）的概念，它具有降低反应速率的能力。为了改进σ (s)的表示，我们开发了一个适应性的半经验方程。作为表面反应的补充，导出了考虑阻力影响的反应速率方程。在接近平衡时，表面阻力占主导地位。Crown Copyright (C) 2019由Elsevier Ltd代表Hydrogen Energy Publications LLC出版。
A model has been derived for the magnesium hydrogenation reaction at conditions close to equilibrium. The reaction mechanism involves an adsorption element, where the model is an extension of the Langmuir adsorption model. The concept of site availability (sigma(s)) is introduced, whereby it has the capability to reduce the reaction rate. To improve representation of sigma(s), an adaptable semi-empirical equation has been developed. Supplement to the surface reaction, a rate equation has been derived considering resistance effects. It was found that close to equilibrium, surface resistance dominated the reaction. Crown Copyright (C) 2019 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.