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G. Parkinson:
"Atomic Scale Insights into Single-Atom Catalysis";
Vacuum, 30 (2018), 5; S. 45 - 49.

"SingleAtom"
Catalysis (SAC) is a rapidly
emerging field aimed at minimizing
the amount of precious metals
required to perform important catalytic
reactions. Modern heterogeneous
catalysts already utilize nanoparticles
containing 100s to 1000s of atoms on
an inexpensive support, but the dream
of SAC is to do the same chemistry with
single atoms. The concept is firmly
entrenched, and SAC systems have
demonstrated activity for a variety of
reaction, metal, and support combinations.
Nevertheless, the topic remains
controversial because it is extremely
difficult to characterize a catalyst
based on single atom active sites, and
even harder to figure out how they
work. In our group in Vienna, we study
model SAC systems in a highly controlled
ultrahigh vacuum environment
using a variety of stateoftheart
surfacescience
techniques to discover
what makes a stable single atom catalyst,
the mechanisms underlying their
catalytic activity, and the processes
leading to their deactivation.

http://dx.doi.org/10.1002/vipr.201800695