Fritz Haber Institute of the Max Planck Society

About: Fritz Haber Institute of the Max Planck Society is a facility organization based out in Berlin, Germany. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 3490 authors who have published 5017 publications receiving 183731 citations. The organization is also known as: Fritz Haber Institute of the Max Planck Society.

Local Chemical Reactivity of a Metal Alloy Surface.

Abstract: The chemical reactivity of a metal alloy surface is studied by density functional theory investigating the interaction of ${\mathrm{H}}_{2}$ with NiAl(110). The energy barrier for ${\mathrm{H}}_{2}$ dissociation is largely different over the Al and Ni sites without, however, reflecting the barriers over the single component metal surfaces. This local chemical behavior is due to the covalent nature of the ( ${\mathrm{H}}_{2}$ ${\ensuremath{\sigma}}_{g}$)-(Ni ${3d}_{{z}^{2}}$) and ( ${\mathrm{H}}_{2}$ ${\ensuremath{\sigma}}_{u}^{*}$)-(Ni ${3d}_{\mathrm{xz}}$) interactions. Thus, it cannot be described in terms of the Harris-Andersson model (i.e., Pauli repulsion and its weakening by empty $d$ states).

Design and Preparation of Highly Active Pt−Pd/C Catalyst for the Oxygen Reduction Reaction

Abstract: ORR (Oxygen Reduction Reaction) has been studied on Pt−Pd/C catalyst both experimentally and theoretically to gain insight into the promotion effect of PtPd nanoclusters to ORR and to provide guide...

Spatiotemporal self-organization in a surface reaction: from the atomic to the mesoscopic scale.

Abstract: Scanning tunneling microscopy data revealed the atomic processes in propagating reaction fronts that occur in the catalytic oxidation of hydrogen on Pt(111). The fronts were also characterized on mesoscopic length scales with respect to their velocity and width. Simulations on the basis of a reaction-diffusion model reproduce the experimental findings qualitatively well. The quantitative comparison reveals the limitations of this traditional approach to modeling spatiotemporal pattern formation in nonlinear dynamics.