Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation

M. Armbrüster, K. Kovnir, M. Friedrich, D. Teschner, G. Wowsnick, M. Hahne, P. Gille, L. Szentmiklósi, M. Feuerbacher, M. Heggen, F. Girgsdies, D. Rosenthal, R. Schlögl, Yu Grin

Research output: Contribution to journalArticle

195 Citations (Scopus)

Abstract

Replacing noble metals in heterogeneous catalysts by low-cost substitutes has driven scientific and industrial research for more than 100 years. Cheap and ubiquitous iron is especially desirable, because it does not bear potential health risks like, for example, nickel. To purify the ethylene feed for the production of polyethylene, the semi-hydrogenation of acetylene is applied (80 × 10 6 tons per annum; refs,). The presence of small and separated transition-metal atom ensembles (so-called site-isolation), and the suppression of hydride formation are beneficial for the catalytic performance. Iron catalysts necessitate at least 50 bar and 100 °C for the hydrogenation of unsaturated C-C bonds, showing only limited selectivity towards semi-hydrogenation. Recent innovation in catalytic semi-hydrogenation is based on computational screening of substitutional alloys to identify promising metal combinations using scaling functions and the experimental realization of the site-isolation concept employing structurally well-ordered and in situ stable intermetallic compounds of Ga with Pd (refs 15-19). The stability enables a knowledge-based development by assigning the observed catalytic properties to the crystal and electronic structures of the intermetallic compounds. Following this approach, we identified the low-cost and environmentally benign intermetallic compound Al 13 Fe 4 as an active and selective semi-hydrogenation catalyst. This knowledge-based development might prove applicable to a wide range of heterogeneously catalysed reactions.

Original languageEnglish
Pages (from-to)690-693
Number of pages4
JournalNature Materials
Volume11
Issue number8
DOIs
Publication statusPublished - Aug 2012

Fingerprint

Palladium
Hydrogenation
hydrogenation
palladium
Intermetallics
intermetallics
Costs
catalysts
Catalysts
isolation
Iron
Industrial research
iron
Acetylene
Health risks
Polyethylene
Precious metals
bears
Nickel
noble metals

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics
  • Materials Science(all)
  • Chemistry(all)

Cite this

Armbrüster, M., Kovnir, K., Friedrich, M., Teschner, D., Wowsnick, G., Hahne, M., ... Grin, Y. (2012). Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation. Nature Materials, 11(8), 690-693. https://doi.org/10.1038/nmat3347

Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation. / Armbrüster, M.; Kovnir, K.; Friedrich, M.; Teschner, D.; Wowsnick, G.; Hahne, M.; Gille, P.; Szentmiklósi, L.; Feuerbacher, M.; Heggen, M.; Girgsdies, F.; Rosenthal, D.; Schlögl, R.; Grin, Yu.

In: Nature Materials, Vol. 11, No. 8, 08.2012, p. 690-693.

Research output: Contribution to journalArticle

Armbrüster, M, Kovnir, K, Friedrich, M, Teschner, D, Wowsnick, G, Hahne, M, Gille, P, Szentmiklósi, L, Feuerbacher, M, Heggen, M, Girgsdies, F, Rosenthal, D, Schlögl, R & Grin, Y 2012, 'Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation', Nature Materials, vol. 11, no. 8, pp. 690-693. https://doi.org/10.1038/nmat3347
Armbrüster M, Kovnir K, Friedrich M, Teschner D, Wowsnick G, Hahne M et al. Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation. Nature Materials. 2012 Aug;11(8):690-693. https://doi.org/10.1038/nmat3347
Armbrüster, M. ; Kovnir, K. ; Friedrich, M. ; Teschner, D. ; Wowsnick, G. ; Hahne, M. ; Gille, P. ; Szentmiklósi, L. ; Feuerbacher, M. ; Heggen, M. ; Girgsdies, F. ; Rosenthal, D. ; Schlögl, R. ; Grin, Yu. / Al 13 Fe 4 as a low-cost alternative for palladium in heterogeneous hydrogenation. In: Nature Materials. 2012 ; Vol. 11, No. 8. pp. 690-693.
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