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Polymers 2018, 10(8), 865; https://doi.org/10.3390/polym10080865

PDDA-Montmorillonite Composites Loaded with Ru Nanoparticles: Synthesis, Characterization, and Catalytic Properties in Hydrogenation of 2-Butanone

1
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
2
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059 Krakow, Poland
3
Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-845 36 Bratislava, Slovakia
*
Author to whom correspondence should be addressed.
Received: 11 July 2018 / Revised: 27 July 2018 / Accepted: 1 August 2018 / Published: 4 August 2018
(This article belongs to the Special Issue Polymer-Clay (Nano)Composites)
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Abstract

The effect of synthesis parameters on the physicochemical properties of clay/ polydiallyldimethylammonium (PDDA)/Ru composites and their applicability in hydrogenation of 2-butanone under very mild conditions (room temperature, atmospheric pressure, and aqueous solution) was studied. Three synthetic procedures were employed, differing in the order of addition of components and the stage at which metallic Ru species were generated. The materials were characterized with XRD (X-ray diffraction), XRF (X-ray fluorescence), EDS (energy-dispersive spectroscopy), AFM (atomic force microscopy), TEM/HRTEM (transmission electron microscopy/high resolution transmission electron microscopy), and TG/DSC (thermal gravimetry/differential scanning microscopy techniques. The study revealed that the method of composite preparation affects its structural and thermal properties, and controls the distribution and size of Ru particles. All catalysts are active in hydrogenation of 2-butanone. For best catalytic performance (100% conversion within 30 min) both the size of Ru particles and the load of polymer had to be optimized. Superior catalytic properties were obtained over the composite with intermediate crystal size and intermediate PDDA load, prepared by generation of metallic Ru species in the polymer solution prior to intercalation. This method offers an easy way of controlling the crystal size by modification of Ru/PDDA ratio. View Full-Text
Keywords: polymer-clay composite; montmorillonite; polydiallyldimethylammonium; Ru nanoparticles; Ru catalyst; 2-butanone hydrogenation polymer-clay composite; montmorillonite; polydiallyldimethylammonium; Ru nanoparticles; Ru catalyst; 2-butanone hydrogenation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Serwicka, E.M.; Zimowska, M.; Duraczyńska, D.; Napruszewska, B.D.; Nattich-Rak, M.; Mordarski, G.; Lityńska-Dobrzyńska, L.; Palkova, H. PDDA-Montmorillonite Composites Loaded with Ru Nanoparticles: Synthesis, Characterization, and Catalytic Properties in Hydrogenation of 2-Butanone. Polymers 2018, 10, 865.

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