Oxygen step-response experiments for methane oxidation over Pd/Al2O3: An in situ XAFS study
Journal article, 2018
Methane oxidation over Pd/Al2O3 has been investigated by in situ XAFS characterization during oxygen step-response experiments. With a net-reducing feed gas, Pd is in a reduced state and the introduction of oxygen leads to oxidation of palladium as well as increased methane conversion. When the rate of Pd oxidation is slow, a transient surface oxidized state is observed with low activity for methane oxidation. The activity increases when palladium is further oxidized and the highest activity is observed for palladium oxide.
XAFS
Step-response
in situ spectroscopy
Palladium
Methane oxidation
Author
Johan Nilsson
Competence Centre for Catalysis (KCK)
Chalmers, Chemistry and Chemical Engineering
Per-Anders Carlsson
Competence Centre for Catalysis (KCK)
Chalmers, Chemistry and Chemical Engineering
Natalia Mihaela Martin
Chalmers, Chemistry and Chemical Engineering
Competence Centre for Catalysis (KCK)
Peter Velin
Chalmers, Chemistry and Chemical Engineering
Debora Motta Meira
European Synchrotron Radiation Facility (ESRF)
Henrik Grönbeck
Competence Centre for Catalysis (KCK)
Chalmers, Physics, Chemical Physics
Magnus Skoglundh
Chalmers, Chemistry and Chemical Engineering
Competence Centre for Catalysis (KCK)
Catalysis Communications
1566-7367 (ISSN)
Vol. 109 24-27Time-resolved in situ methods for design of catalytic sites within sustainable chemistry
Swedish Research Council (VR) (2013-567), 2013-01-01 -- 2016-12-31.
Unravelling catalytically active sites with X-ray absorption spectroscopy
Swedish Research Council (VR) (2011-5009), 2012-01-01 -- 2015-12-31.
Fundamental studies on the influence of water on oxidation catalysts for biogas applications
Swedish Energy Agency (P40274-1), 2015-04-01 -- 2019-03-31.
Driving Forces
Sustainable development
Areas of Advance
Nanoscience and Nanotechnology
Transport
Energy
Materials Science
Subject Categories
Chemical Process Engineering
Materials Chemistry
Condensed Matter Physics
DOI
10.1016/j.catcom.2018.02.011