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Non-noble intermetallic compounds have shown promising properties as inexpensive catalyst alternatives to Pt-group metals for alkyne and alkene hydrogenation. In this work, the gas-phase hydrogenation of 1,3-butadiene over the Al13Fe4(010) surface was investigated in the 0.2–2kPa total pressure range at 20–200°C in a batch-type reactor coupled with an ultrahigh-vacuum setup allowing for Auger electron...