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Cover Picture Tomographic Energy Dispersive Diffraction Imaging as a Tool To Profile in Three Dimensions the Distribution and Composition of Metal Oxide Species in Catalyst Bodies (Angew. Chem. Int. Ed. 462007)

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Cover Picture
Andrew M. Beale, Simon D. M. Jacques, Jaap A. Bergwerff,
Paul Barnes, and Bert M. Weckhuysen*
Like an eye on the inside tomographic energy dispersive diffraction imaging is used
to obtain 3D information on the phase and element distribution of metal oxides in
catalyst extrudate bodies (the pellets in the cover picture). In the Communication on
page 8832 ff., B. M. Weckhuysen and co-workers use Co–Mo/Al2O3
hydrodesulfurization catalysts to showcase the technique and its capacity to
discriminate between crystalline and noncrystalline phases. They show that 1D and
2D studies oversimplify the challenge of relating catalyst performance to a
preparation method.
Natural Products
In their minireview on page 8748 ff., K. A. Scheid and C. V. Galliford present the
3,3’-pyrrolidinyl-spirooxindole system as a privileged heterocyclic motif for the
development of potential medicinal agents or biological probes.
Single-Cell Investigations
In the Review on page 8760 ff., W. Schuhmann and A. Schulte explain how single
cells can be investigated with the aid of precisely positionable voltammetric
ultramicroelectrodes. The method can be applied in membrane biology, physiology,
neuroscience, pathology, and pharmacology.
Dinitrogen Activation
When a solution of the hydride complex shown in the picture is exposed to N2, as
H. Kawaguchi and co-workers describe in their Communication on page 8778 ff., a
nitride complex and H2 form with concomitant cleavage of the dinitrogen bond.
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species, profil, dimensions, distributions, tomography, energy, tool, diffraction, three, bodies, dispersion, int, cover, angel, oxide, chem, metali, imagine, picture, composition, catalyst, 462007
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