DOI > 10.5291/ILL-DATA.5-24-613

This proposal is publicly available since 10/08/2023

Title

Reaction pathways of hydrogenation-dehydrogenation of InPd3 and FePd3 by in situ neutron diffraction

Abstract

The hydrogen-induced atomic rearrangements in intermetallic compounds MPd3 (M = In, Fe) will be studied by in situ neutron powder diffraction. A user-supplied gas-pressure cell with laser heating installed on D20 will provide the means to collect diffraction patterns as a function of temperature (up to 600 K) and deuterium gas pressure (up to 100 bar) with a time resolution of two minutes. This will allow to identify intermediates including deuterium positions in the crystal structures and provide an understanding of the underlying principle of hydrogen-induced rearrangement in intermetallics. For InPd3, the series of superstructures of the cubic-close packing (ccp) TiAl3 type - ZrAl3 type - PbTl2Pd9 type - AuCu3 type is to be monitored upon hydrogen uptake. For FePd3, the effect of atomic order (Fe/Pd, AuCu3 type and Cu type) on hydrogenation and hydrogen-induced ordering will be elucidated. These reactions are of importance in hydrogen embrittlement of materials and in catalytic processes.

Experimental Report

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Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

Holger Kohlmann; FINGER Raphael; GOETZE André; Thomas C. Hansen; PFLUG Christian and WERWEIN Anton. (2018). Reaction pathways of hydrogenation-dehydrogenation of InPd3 and FePd3 by in situ neutron diffraction. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-613

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Metadata

Experiment Parameters

  • Environment temperature

    300-600K
  • Experiment energy

    187 pm
  • Experiment res energy

    high-resolution mode

Sample Parameters

  • Formula

    • FePd3
    • InPd3