5 1 Conceptual approach 8 1.1 Scope of this thesis 8 1.2 Electronic and geometric effects in bimetallic catalysts 10 1.3 Mixed Oxides 11 1.4 (Strong) metal-support interaction 12 1.5 The role of the Pd-hydride phases 14 1.6 Oxide-supported Pd bimetallics in methanol steam reforming 14 1.7 Model Systems 21 2 Appendix: Experimental approach and methods 25 2.1 Electron Microscopy and related techn...

A fine layered nanocomposite with a total thickness of about 200 nm was formed on the surface of an Al63Cu25Fe12 quasicrystal (QC). The nanocomposite was found to exhibit high catalytic performance for steam reforming of methanol. The nanocomposite was formed by a self-assembly process, by leaching the Al-Cu-Fe QC using a 5 wt% Na2CO3 aqueous solution followed by calcination in air at 873 K. Th...

In this study, ZnFe2O4 and ZnO-ZnFe2O4 catalysts were prepared using the glycine–nitrate process (GNP). The catalyst powders characterized a scanning electron microscope, transmission XRD diffraction studies, selected area pattern studies. addition, specific surface was measured Brunauer–Emmett–Teller analysis. hydrogen reduction in different temperature ranges analyzed H2 temperature-programme...

Glycerol represents an emerging renewable bio-derived feedstock, which could be used as a source for producing hydrogen through steam reforming reaction. In this review, the state-of-the-art about glycerol production processes is reviewed, with particular focus on glycerol reforming reactions and on the main catalysts under development. Furthermore, the use of membrane catalytic reactors instea...

The thermal valorization of glycerol to produce synthesis gas has been investigated under conventional and microwave heating systems. Different processes (pyrolysis, steam reforming and dry reforming) are compared, using a commercial activated carbon as catalyst. The reforming processes that employ oxidizing agents (CO2 or H2O) were found to promote higher glycerol conversions than mere termal ...

A screening study of the steam reforming reaction on clean and oxygen covered early transitionmetal carbides surfaces is performed by means of density-functional theory calculations. It is found that carbides provide a wide spectrum of reactivities, from too reactive via suitable to too inert. Several molybdenum-based systems are identified as possible steam reforming catalysts. The findings su...