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A DRIFTS study of the morphology and surface adsorbate composition of an operating methanol synthesis catalyst

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Abstract

The nature of the species adsorbed on a Cu/ZnO/Al2O3 catalyst while it was producing methanol has been elucidated in this study using DRIFTS. The species are carbonates, formate, CO, oxygen atoms (∼ 2% of a monolayer) and methoxy on the Cu and methoxy on the ZnO. The frequencies observed for the C-O stretch on Cu, 2076, 2092, 2105 and 2132 cm−1, have revealed the morphology of the copper component of the operating catalyst. The surface of the copper is predominantly the (111) face (∼ 65%) (the 2076 cm−1 peak) with the (755) (the 2092 cm−1 peak) and the (311) (the 2105 cm−1 peak) faces occupying roughly 20% and 15%, respectively, of the copper area. The 2132 cm−1 peak derives from CO adsorbed on Cu+ site on the copper which is ∼ 2% of a monolayer.

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Authors and Affiliations

  1. ICIKatalco, PO Box 1, 231LB, Billingham, Cleveland, TS, UK

    S. Bailey

  2. Laboratorium voor Petrochemische Techniek, Rijksuniversiteit, Krijgslaan 281, B-9000, Ghent, Belgium

    G. F. Froment & J. W. Snoeck

  3. Department of Chemistry, UMIST, Sackville Street, PO Box 88, M601QD, Manchester, UK

    K. C. Waugh

Authors
  1. S. Bailey
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  2. G. F. Froment
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  3. J. W. Snoeck
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  4. K. C. Waugh
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Bailey, S., Froment, G.F., Snoeck, J.W. et al. A DRIFTS study of the morphology and surface adsorbate composition of an operating methanol synthesis catalyst. Catal Lett 30, 99–111 (1994). https://doi.org/10.1007/BF00813676

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  • DOI: https://doi.org/10.1007/BF00813676

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