Issue 37, 2016

Hysteresis phenomenon in a reaction system of nanocrystalline iron and a mixture of ammonia and hydrogen

Abstract

During nitriding of nanocrystalline iron and reduction of iron nitrides with NH3/H2 mixtures, at the stationary states a hysteresis phenomenon is observed where two phases coexist, according to the extended phase rule of Gibbs due to the presence of an additional degree of freedom associated with the size of the nanocrystallites. Nanocrystallites transform from the biggest ones to the smallest due to differences in energy demand.

Graphical abstract: Hysteresis phenomenon in a reaction system of nanocrystalline iron and a mixture of ammonia and hydrogen

Supplementary files

Article information

Article type
Communication
Submitted
01 Jul 2016
Accepted
25 Aug 2016
First published
25 Aug 2016

Phys. Chem. Chem. Phys., 2016,18, 25796-25800

Hysteresis phenomenon in a reaction system of nanocrystalline iron and a mixture of ammonia and hydrogen

W. Arabczyk, E. A. Ekiert and R. Pelka, Phys. Chem. Chem. Phys., 2016, 18, 25796 DOI: 10.1039/C6CP04606A

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