On the Relationships between the Kinetics and Mechanisms of Gaseous Hydrogen Reduction of Solid Nickel Oxide

T. Hidayat; M. A. Rhamdhani; E. Jak; P. C. Hayes

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On the Relationships between the Kinetics and Mechanisms of Gaseous Hydrogen Reduction of Solid Nickel Oxide

机译：固体氧化镍气态氢还原反应动力学与机理的关系

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Analysis has been undertaken on the kinetics of gaseous hydrogen reduction of solid nickel oxide by considering elementary steps commonly found in gas-solid reactions, i.e., gas-film mass transfer, gas pore diffusion, and chemical reaction. It is demonstrated that these reaction steps alone cannot account for the observed rates. The analysis has therefore been extended to include recently obtained microstructural information on the reduction product. The study provides strong evidence for direct links between the overall reduction kinetics and the changes to the reduction product microstructures generated at the Ni-NiO interface.

机译：通过考虑通常在气固反应中发现的基本步骤，即气膜传质，气孔扩散和化学反应，对固体氧化镍气态氢还原的动力学进行了分析。证明仅这些反应步骤不能解释观察到的速率。因此，分析已扩展到包括最近获得的有关还原产物的微观结构信息。该研究为整体还原动力学与在Ni-NiO界面处生成的还原产物微观结构的变化之间的直接联系提供了有力的证据。

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《Metallurgical and Materials Transactions B》 |2009年第4期|474-489|共16页
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T. Hidayat; M. A. Rhamdhani; E. Jak; P. C. Hayes;
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Pyrometallurgy Research Centre The University of Queensland Brisbane QLD 4072 Australia;

Pyrometallurgy Research Centre The University of Queensland Brisbane QLD 4072 Australia;

Pyrometallurgy Research Centre The University of Queensland Brisbane QLD 4072 Australia;

Pyrometallurgy Research Centre The University of Queensland Brisbane QLD 4072 Australia;

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On the Relationships between the Kinetics and Mechanisms of Gaseous Hydrogen Reduction of Solid Nickel Oxide

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