An in situ powder diffraction cell for high‐pressure hydrogenation experiments using laboratory X‐ray diffractometers. (1st February 2015)

• Record Type: Journal Article
• Authors: Moury, Romain; Hauschild, Klaus; Kersten, Wolfgang; Ternieden, Jan; Felderhoff, Michael; Weidenthaler, Claudia
• Is Part Of: Journal of applied crystallography. Volume 48:Part 1(2015:Feb.)
• Page Start: 79
• Page End: 84
• Publication Date: 2015-02-01
• Subjects: Crystallography -- Periodicals; 548.05
• DOI: 10.1107/S1600576714025692
• Languages: English
• ISSNs: 0021-8898

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>An <italic>in situ</italic> diffraction cell is presented which has been designed and constructed for in‐house powder diffraction experiments under high gas pressures up to 30 MPa. For a proof of principle, the <italic>in situ</italic> cell has been tested for several hydrogenation experiments under elevated pressures and temperatures. LaNi₅ was chosen as an example for hydrogenation, applying simultaneously 5.5 MPa H₂ pressure at a temperature of 423 K. For testing the high‐pressure–temperature suitability of the <italic>in situ</italic> cell, pressure–temperature experiments up to 14 MPa at 373 K were performed, studying the rehydrogenation of NaH and Al to NaAlH₄. The experimental setup enables recording of <italic>in situ</italic> X‐ray diffraction data on laboratory instruments with short data acquisition times at elevated hydrogen pressures and temperatures.</p> </abstract>