Mechanism of the oxygen-stimulated deactivation of RuyTi1−y-oxide overlayers on Ti studied by XPS,SEM and electrochemical techniques

By means of wet oxygen exposure the stability of RTO anodes has been observed. The deactivation is due to ruthenium loss via unstable higher surface oxides in a long time regime. As follows after uneffective subsurface annealing procedure the catalytic durability is reduced drastically by erosion stimulated increasing ruthenium loss of inhomogeneous active layer surfaces.     

Commutator conditions implying the convergence of the Lie-Trotter products

In this paper we investigate commutator conditions for two strongly continuous semigroups and on a Banach space implying the convergence of the Lie-Trotter products . The results are then applied to various examples and, in particular, to the Ornstein-Uhlenbeck operator.

     

The role of applications within the reviewing service zbMATH

Zentralblatt MATH (zbMATH) is the world's most comprehensive and longest-running abstracting and reviewing service in pure and applied mathematics. The database contains more than 3.6 million bibliographic entries, starting from the 18th century. The presentation during the DMV/GAMM meeting gave a short introduction to the search engine with emphasis on selected fields of applied mathematics. This is a shortened version of the talk without details about the database itself. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)     

Combined surface analytical and electrochemical investigations of Ru?Ti?Sn mixed oxide electrocatalysts

Using a galvanostatic oxygen exposure, it can be shown by XPS and SEM that admixtures of Sn (2 at.%) to RTO anodes inhibit the corrosion of both the bulk ruthenium species and the titanium substrate interface. The inhibitor effect is strongly dependent on the Sn segregation to the surface region blocking the channels of oxygen diffusion in incoherent active layers for Cl₂ evolution.