Dehydrogenation Kinetics and Modeling Studies of MgH<sub>2</sub> Enhanced by Transition Metal Oxide Catalysts Using Constant Pressure Thermodynamic Driving Forces

Andrew J. Goudy; Saidi Temitope Sabitu

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Dehydrogenation Kinetics and Modeling Studies of MgH₂ Enhanced by Transition Metal Oxide Catalysts Using Constant Pressure Thermodynamic Driving Forces

机译：恒压热力学驱动力的过渡金属氧化物催化剂增强MgH _{2 的脱氢动力学和模型研究}

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The influence of transition metal oxide catalysts (ZrO₂, CeO₂, Fe₃O₄ and Nb₂O₅) on the hydrogen desorption kinetics of MgH₂ was investigated using constant pressure thermodynamic driving forces in which the ratio of the equilibrium plateau pressure (p_m) to the opposing plateau (p_op) was the same in all the reactions studied. The results showed Nb₂O₅ to be vastly superior to other catalysts for improving the thermodynamics and kinetics of MgH₂. The modeling studies showed reaction at the phase boundary to be likely process controlling the reaction rates of all the systems studied.

机译：过渡金属氧化物催化剂（ZrO _{2 ，CeO _{2 ，Fe _{3 O _{4 和Nb 2 O _{5 ）对MgH _{2 的氢解吸动力学，其中平衡平台压之比（p在所有研究的反应中，对立高原（p _{op ）的_{m ）相同。结果表明，Nb _{2 O _{5 在改善MgH _{2 的热力学和动力学方面远远优于其他催化剂。建模研究表明，相边界处的反应很可能是控制所有研究系统的反应速率的过程。}}}}}}}}}}}

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《Metals》 |2012年第3期|共10页
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Andrew J. Goudy; Saidi Temitope Sabitu;
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Dehydrogenation Kinetics and Modeling Studies of MgH2 Enhanced by Transition Metal Oxide Catalysts Using Constant Pressure Thermodynamic Driving Forces

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Dehydrogenation Kinetics and Modeling Studies of MgH₂ Enhanced by Transition Metal Oxide Catalysts Using Constant Pressure Thermodynamic Driving Forces