Formation of a ZnO Overlayer in Industrial Cu/ZnO/Al2O3 Catalysts Induced by Strong Metal-Support Interactions

Thomas Lunkenbein; Julia Schumann; Malte Behrens; Robert Schlögl; Marc G. Willinger

doi:10.1002/anie.201411581

Formation of a ZnO Overlayer in Industrial Cu/ZnO/Al₂O₃ Catalysts Induced by Strong Metal-Support Interactions

Thomas Lunkenbein, Julia Schumann, Malte Behrens, Robert Schlögl, Marc G. Willinger

Research output: Contribution to journal › Article › peer-review

505 Scopus citations

Abstract

In industrially relevant Cu/ZnO/Al₂O₃ catalysts for methanol synthesis, the strong metal support interaction between Cu and ZnO is known to play a key role. Here we report a detailed chemical transmission electron microscopy study on the nanostructural consequences of the strong metal support interaction in an activated high-performance catalyst. For the first time, clear evidence for the formation of metastable "graphite-like" ZnO layers during reductive activation is provided. The description of this metastable layer might contribute to the understanding of synergistic effects between the components of the Cu/ZnO/Al₂O₃ catalysts.

Original language	English
Pages (from-to)	4544-4548
Number of pages	5
Journal	Angewandte Chemie International Edition in English
Volume	54
Issue number	15
DOIs	https://doi.org/10.1002/anie.201411581
State	Published - 7 Apr 2015
Externally published	Yes

Keywords

electron microscopy
energy conversion
heterogeneous catalysis
methanol synthesis

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10.1002/anie.201411581

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abstract = "In industrially relevant Cu/ZnO/Al2O3 catalysts for methanol synthesis, the strong metal support interaction between Cu and ZnO is known to play a key role. Here we report a detailed chemical transmission electron microscopy study on the nanostructural consequences of the strong metal support interaction in an activated high-performance catalyst. For the first time, clear evidence for the formation of metastable {"}graphite-like{"} ZnO layers during reductive activation is provided. The description of this metastable layer might contribute to the understanding of synergistic effects between the components of the Cu/ZnO/Al2O3 catalysts.",

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AU - Behrens, Malte

AU - Schlögl, Robert

AU - Willinger, Marc G.

PY - 2015/4/7

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AB - In industrially relevant Cu/ZnO/Al2O3 catalysts for methanol synthesis, the strong metal support interaction between Cu and ZnO is known to play a key role. Here we report a detailed chemical transmission electron microscopy study on the nanostructural consequences of the strong metal support interaction in an activated high-performance catalyst. For the first time, clear evidence for the formation of metastable "graphite-like" ZnO layers during reductive activation is provided. The description of this metastable layer might contribute to the understanding of synergistic effects between the components of the Cu/ZnO/Al2O3 catalysts.

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KW - heterogeneous catalysis

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Formation of a ZnO Overlayer in Industrial Cu/ZnO/Al₂O₃ Catalysts Induced by Strong Metal-Support Interactions

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