Abstract
This work investigates 2.5 – 30 nm gold nanoparticles immobilized on Al2O3. It shows that they possess high activity and stability in selective hydrogenation of phenylacetylene into styrene from a phenylacetylene-styrene mixture at 423 K. Strong dependences of the activity and selectivity of Au/ Al2O3 on the gold size were revealed: as the size of supported gold nanoparticles was decreased from 30 to 2.5 nm, the TOF of phenylacetylene hydrogenation increased from 0.028 to 0.142 s−1 and the selectivity of styrene formation increased by an order of magnitude. The nature of the identified dependences is discussed in terms of “Geometric” and “Electronic” size-effect points.
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Professor Smirnov Vladimir Valentinovich is the Head of Laboratory of Kinetics of Homogeneous Catalytic Reactions at the M.V. Lomonosov Moscow State University (Moscow). His research interest involves homogeneous and heterogeneous catalysis, chemical reaction engineering and new experimental methods to discover catalysts and materials. During his scientific practice he trained 16 PhDs and published about 280 scientific articles.
PhD Nikolaev Sergey Alexandrovich is a young scientist of the M.V. Lomonosov Moscow State University (Moscow) where he specializes in heterogeneous catalysis by metal nanoparticles, mainly in catalysis by gold, palladium and nickel.
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Nikolaev, S.A., Smirnov, V.V. Selective hydrogenation of phenylacetylene on gold nanoparticles. Gold Bull 42, 182–189 (2009). https://doi.org/10.1007/BF03214932
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DOI: https://doi.org/10.1007/BF03214932