Capturing metal-support interactions in situ during the reduction of a Re promoted Co/γ-Al 2 O 3 catalyst

The reduction of a Re promoted Co/γ-Al 2 O 3 catalyst was monitored in situ by synchrotron X-ray powder diffraction (XRPD) under H 2 environment. Whole powder pattern analysis revealed a non-linear expansion of the unit cell of γ-Al 2 O 3 during the reduction process, suggesting the diffusion of Co...

Full description

Saved in:
Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2016, Vol.52 (15), p.3239-3242
Main Authors: Tsakoumis, N. E., Johnsen, R. E., van Beek, W., Rønning, M., Rytter, E., . Holmen, A
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The reduction of a Re promoted Co/γ-Al 2 O 3 catalyst was monitored in situ by synchrotron X-ray powder diffraction (XRPD) under H 2 environment. Whole powder pattern analysis revealed a non-linear expansion of the unit cell of γ-Al 2 O 3 during the reduction process, suggesting the diffusion of Co cations into the structure of the support. The non-linear cell expansion coincided with the formation of a CoO phase. In addition, space resolved diffraction at the inlet and the outlet of the reactor evidenced a negative effect of the partial pressure of indigenous H 2 O (g) on the reduction process.
ISSN:1359-7345
1364-548X
DOI:10.1039/C5CC09879C