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Journal Article

Subsurface-Controlled CO2 Selectivity of PdZn Near-Surface Alloys in H2 Generation by Methanol Steam Reforming

MPS-Authors
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Rameshan,  Christoph
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Hävecker,  Michael
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21378

Blume,  Raoul
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22013

Rocha,  Tulio
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22163

Teschner,  Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Knop-Gericke,  Axel
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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478147.pdf
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Citation

Rameshan, C., Stadlmayr, W., Weilach, C., Penner, S., Lorenz, H., Hävecker, M., et al. (2010). Subsurface-Controlled CO2 Selectivity of PdZn Near-Surface Alloys in H2 Generation by Methanol Steam Reforming. Angewandte Chemie International Edition, 49(18), 3224-3227. doi:10.1002/anie.200905815.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-F5F8-3
Abstract
More than skin deep: In spite of their identical 1:1 surface composition, the geometric and electronic structures of a multilayer and monolayer PdZn surface alloy are different, as are their catalytic selectivities. The CO2 selective multilayer alloy features surface ensembles of PdZn exhibiting a Zn-up/Pd-down corrugation (see picture). These act as bifunctional active sites both for water activation and for the conversion of methanol into CO2. On the monolayer alloy CO and not CO2 is produced.