Water-Gas Shift over Pt Nanoparticles Dispersed on CeO and Gadolinium-Doped Ceria (GDC) Supports with Specific Nano-Configurations.

The water-gas shift (WGS) reaction is one of the most significant reactions in hydrogen technology since it can be used directly to produce hydrogen from the reaction of CO and water; it is also a side reaction taking place in the hydrocarbon reforming processes, determining their selectivity towards H production. The development of highly active WGS catalysts, especially at temperatures below ~450 °C, where the reaction is thermodynamically favored but kinetically limited, remains a challenge. From a fundamental point of view, the reaction mechanism is still unclear.

Propylene Production via Oxidative Dehydrogenation of Propane with Carbon Dioxide over Composite MO-TiO Catalysts.

The CO-assisted oxidative dehydrogenation of propane (ODP) was investigated over titania based composite metal oxides, 10% MO-TiO (M: Zr, Ce, Ca, Cr, Ga). It was found that the surface basicity of composite metal oxides was significantly higher than that of bare TiO and varied in a manner which depended strongly on the nature of the MO modifier. The addition of metal oxides on the TiO surface resulted in a significant improvement of catalytic performance induced by a synergetic interaction between MO and TiO support.

Nanocatalysis for Environmental Protection, Energy, and Green Chemistry.

Nowadays, nanoscience and nanotechnology depict cutting-edge areas of modern science and technology across an array of applications, including heterogeneous catalysis [...

Support Induced Effects on the Ir Nanoparticles Activity, Selectivity and Stability Performance under CO Reforming of Methane.

The production of syngas (H and CO)-a key building block for the manufacture of liquid energy carriers, ammonia and hydrogen-through the dry (CO2-) reforming of methane (DRM) continues to gain attention in heterogeneous catalysis, renewable energy technologies and sustainable economy. Here we report on the effects of the metal oxide support (γ-AlO, alumina-ceria-zirconia (ACZ) and ceria-zirconia (CZ)) on the low-temperature (ca. 500-750 ∘C) DRM activity, selectivity, resistance against carbon deposition and iridium nanoparticles sintering under oxidative thermal aging.

Support Effects on the Activity of Ni Catalysts for the Propane Steam Reforming Reaction.

The catalytic performance of supported Ni catalysts for the propane steam reforming reaction was investigated with respect to the nature of the support. It was found that Ni is much more active when supported on ZrO or YSZ compared to TiO, whereas AlO and CeO-supported catalysts exhibit intermediate performance. The turnover frequency (TOF) of CH conversion increases by more than one order of magnitude in the order Ni/TiO < Ni/CeO < Ni/AlO < Ni/YSZ < Ni/ZrO, accompanied by a parallel increase of the selectivity toward the intermediate methane produced.

Liquid-Phase Catalytic Transfer Hydrogenation of Furfural over Homogeneous Lewis Acid-Ru/C Catalysts.

The catalytic performance of homogeneous Lewis acid catalysts and their interaction with Ru/C catalyst are studied in the catalytic transfer hydrogenation of furfural by using 2-propanol as a solvent and hydrogen donor. We find that Lewis acid catalysts hydrogenate the furfural to furfuryl alcohol, which is then etherified with 2-propanol. The catalytic activity is correlated with an empirical scale of Lewis acid strength and exhibits a volcano behavior.