Another example of catalyst that has been widely reported to be active at low temperature is a catalyst based on sulfated zirconia [8, 9, 10, 11, 12, 13].
Although there is evidence for greater complexity in the structure of these catalysts than has been incorporated in DFT models, these results provide an important additional example of catalyst identification and design from first principles.
Particularly, examples of catalyst supports with thermal stability, and new combustion catalysts, substitute hexaaluminates, are presented.
Typical examples of catalyst deactivation are presented, showing the phenomena that may be encountered in commercial hydroprocessing units.
5– 8 Based on the BEP relations, some successful examples of catalyst design from first-principles calculations, that is, the activities were plotted against the adsorption energies of key intermediates (see, for example, Refs. 9, 10), were reported.
Examples of catalysts include finely divided Cu/CuO or FeO/Fe2O3 supported on γ-alumina.
The purpose of this brief review is to discuss recent results on model ceria-based catalysts using CeO2(1 1 1), VOx/CeO2(1 1 1), and Ni/CeO2(1 1 1) as examples of catalysts for partial alkyne hydrogenation, oxidative dehydrogenation, and hydrogen production, respectively.
This argument is developed on the basis of examples of catalysts that are less complex structurally than typical industrial solid catalysts; the examples include metal complexes bonded to supports, through tethers or metal oxygen bonds, and crystalline porous materials such as zeolites.
The process is known as ammonia selective catalytic reduction (NH3-SCR) and examples of catalysts are Fe-ZSM-5, Fe-beta and Cu-SSZ-13, although small-pore zeolites such as SSZ-13 were found to be most active.
We envision that the approach described here may be an example of elegant catalyst design to efficiently overcome difficult problems in active-metal encapsulation and to dramatically enhance catalytic activity by taking advantage of the unique aspects of microfluidic methods.
Finally, as an example of environmental catalysts, the NOx storage reduction type three-way automobile catalyst, is introduced.
