ISIS Neutron and Muon Source Data Journal

Determination of the on-top vibrational mode of the surface hydride in PdH.

Abstract: Finely divided supported palladium particles are used as catalysts in many technical processes. Using MAPS we have recently investigated the interaction of hydrogen with the Lindlar catalyst (PdPb/CaCO3) and commercial carbon supported Pd-based catalysts used for the selective hydrogenation of nitro-arenes to amino-arenes. In addition to the presence of the modes of the (expected) hydrogen-in-metal system β-PdH near 500 cm-1, we observed an additional very weak mode at ~2100 cm-1 on Pd(20 wt%)/C and Pd black. In view of their commercial importance, palladium hydrogenation catalysts have been extensively studied for more than 50 years, so the detection of a new catalytic site is very significant. Our experience is that MERLIN has an approximately tenfold advantage in signal-to-noise ratio over MAPS and we wish to use the greater sensitivity of MERLIN to confirm this novel result.

Principal Investigator: Dr Peter Albers
Experimenter: Professor Stewart Parker
Local Contact: Dr Helen Walker

DOI: 10.5286/ISIS.E.RB1510145

ISIS Experiment Number: RB1510145

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Peter Albers et al; (2015): Determination of the on-top vibrational mode of the surface hydride in PdH., STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510145

Data is released under the CC-BY-4.0 license.