Capturing metal-support interactions in situ during the reduction of a Re promoted Co/γ-Al2O3 catalyst.
- Resource Type
- Academic Journal
- Authors
- Tsakoumis NE; Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. nikolaos.tsakoumis@ntnu.no.; Johnsen RE; Department of Energy Conversion and Storage, Technical University of Denmark, DK-4000 Roskilde, Denmark.; van Beek W; Swiss-Norwegian Beamlines at ESRF, BP 220, Grenoble 38043, France.; Rønning M; Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. nikolaos.tsakoumis@ntnu.no.; Rytter E; Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. nikolaos.tsakoumis@ntnu.no and SINTEF Materials and Chemistry, NO-7465 Trondheim, Norway.; Holmen A; Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway. nikolaos.tsakoumis@ntnu.no.
- Source
- Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 9610838 Publication Model: Print Cited Medium: Internet ISSN: 1364-548X (Electronic) Linking ISSN: 13597345 NLM ISO Abbreviation: Chem Commun (Camb) Subsets: PubMed not MEDLINE
- Subject
- Language
- English
The reduction of a Re promoted Co/γ-Al2O3 catalyst was monitored in situ by synchrotron X-ray powder diffraction (XRPD) under H2 environment. Whole powder pattern analysis revealed a non-linear expansion of the unit cell of γ-Al2O3 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 H2O(g) on the reduction process.