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412 LIQUID PHASE HYDROSILYLATION OVER SIZE-CONTROLLED Pt NANOPARTICLES

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(1)22nd International Symposium on Analytical and Environmental Problems. LIQUID PHASE HYDROSILYLATION OVER SIZE-CONTROLLED Pt NANOPARTICLES Dániel Sipos, András Sápi, Dorina G. Dobó Department of Applied and Environmental Chemistry, University of Szeged, 1 Rerrich square, H-6720 Szeged, Hungary Abstract Hydrosilylation reactions give important materials as high potential medical transfer molecules or additives in the rubber industry [1,2]. These reactions were based on homogeneous catalysts in the second half of the last century. Noble metal based heterogeneous catalysts were tested for such reactions since the 90’s [3], however the effect of size controlled nanoparticles is unknown. In this study, Platinum nanoparticles with a diameter of 1.6, 4.8, 8.3 nm were anchored onto SBA-15 silica support and tested in phenylacetylene hydrosilylation with triethylene silane. The catalysts were characterized with Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) and Transmission Electron Microscope (TEM). The effect of the size of the Pt nanoparticles on the activity and selectivity of the liquid phase reactions were tested and monitored by Gas Cromatography (GC-MS). Based on our results it can be stated, that the 8.3 nm Pt nanoparticles is 10 times more active compared to the 1.6 nm Pt NPs. We also experienced striking differences in the selectivity of the products based on different sized Pt nanoparticles. Size controlled Pt nanoparticles can be the future for governing hydrosilylation reactions towards high activity and 100% selectivity. Figure 1.: Schematic of the hydrosylilation reaction. [1] F. Alonso, et al., Journal of Organometallic Chemistry, 2010 [2] B. Marciniec, J. Gulinski, W. Urbaniak, Z.W. Kornetka, Comprehensive Handbook on Hydrosilylation, B. Marciniec (ed) Pergamon Press, Oxford, 754 (1992) [3] Mario Pagliaro, Rosaria Ciriminna, Valerica Pandarus, and François Béland Eur. J. Org. Chem. 6227–6235, (2013). 412.

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b Department of Physical Chemistry and Material Science, University of Szeged, 1 Rerrich Béla tér, H–6720 Szeged, Hungary.. c Department of Chemistry, Babes-Bolyai University,

PROCEEDINGS OF THE

University of Szeged, Department of Inorganic and Analytical Chemistry, H-6720 Szeged, Dóm tér 7, Hungary.

PROCEEDINGS OF THE

University of Szeged, Department of Inorganic and Analytical Chemistry, H-6720 Szeged, Dóm tér 7, Hungary.

PROCEEDINGS OF THE

University of Szeged, Department of Inorganic and Analytical Chemistry, H-6720 Szeged, Dóm tér 7, Hungary.

PROCEEDINGS OF THE

University of Szeged, Department of Inorganic and Analytical Chemistry, H-6720 Szeged, Dóm tér 7, Hungary.

Supplementary Materials

1 MTA-SZTE Lendület Biocolloids Research Group, Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary.. 2

Triethylsilane in the Liquid Phase over Size Controlled Pt Nanoparticles

Size controlled Pt nanoparticles showed size-dependent activity and selectivity in the case of phenylacetylene hydrosilylation with triethylsilane in the liquid phase.. 7.0 nm

Triethylsilane in the Liquid Phase over Size Controlled Pt Nanoparticles

Size controlled Pt nanoparticles showed size-dependent activity and selectivity in the case of phenylacetylene hydrosilylation with triethylsilane in the liquid phase.. 7.0 nm