Published 2009
| Version v1
Publication
Hydrogen production by ethanol steam reforming over Ni catalysts derived from hydrotalcite-like precursors: catalyst characterization, catalytic activity and reaction path
Description
IR spectroscopy of low temperature adsorbed CO and CO + NO has been used to characterize the surface
species on a 5% Ni-YSZ catalyst. Dispersed surface Ni species are present on the fresh catalyst, essentially
formed by Ni2+, although it is evident that these species are very easily reduced in very mild conditions to
zerovalent atomic nickel. Reduction in stronger conditions gives rise to small Ni metal particles, which
are however easily reoxidized to bivalent nickel. This work has demonstrated how elastic is the redox
state of this catalyst. This is supposed to be a key properties explaining the behaviour of this catalyst in
converting ethanol in the presence of water.
Additional details
Identifiers
- URL
- http://hdl.handle.net/11567/247402
- URN
- urn:oai:iris.unige.it:11567/247402
Origin repository
- Origin repository
- UNIGE