relation: http://publicatio.bibl.u-szeged.hu/13122/
title: Tuning the activity and selectivity of phenylacetylene hydrosilylation with triethylsilane in the liquid phase over size controlled Pt nanoparticles
creator:  Dobó Dorina Gabriella
creator:  Sipos Dániel
creator:  Sápi András
creator:  London Gábor
creator:  Juhász Koppány Levente
creator:  Kukovecz Ákos
creator:  Kónya Zoltán
subject: 01.04. Kémiai tudományok
subject: 05.07. Társadalom- és gazdaságföldrajz
description: Pt nanoparticles with controlled sizes between 1.6–7.0 nm were anchored onto the surface and pores of SBA-15 silica support. The catalysts were characterized by TEM-ED, BET, XRD, and ICP-MS techniques and were tested in liquid phase hydrosilylation of phenylacetylene with triethylsilane. The activity of the 7.0 nm Pt nanoparticles anchored onto the surface of SBA-15 in hydrosilylation (TOF = 0.107 molecules·site−1·s−1) was ~2 times higher compared to the 5.0 nm Pt/SBA-15 (TOF = 0.049 molecules·site−1·s−1) catalyst and ~10 times higher compared to the 1.6 nm Pt/SBA-15 (TOF = 0.017 molecules·site−1·s−1) catalyst. Regarding the selectivity, bigger nanoparticles produced more vinylsilane-type products (α- and β-(E)-products) and less side products (mainly ditriethylsilane, triethyl(1-phenylethyl)silane and triethyl(phenethyl)silane derived likely from the reduction of the vinylsilane products). However, the selectivity towards the β-(E)-triethyl(styryl)silane was higher in the case of 1.6 nm Pt/SBA-15 catalyst compared to 5.0 nm Pt/SBA-15 and 7.0 nm Pt/SBA-15, respectively, which can be attributed to the beneficial effect of the size differences of the Pt nanoparticles as well as the differences of the quality and quantity of Pt/SiO2 interfaces.
date: 2018
type: Folyóiratcikk
type: PeerReviewed
format: text
identifier: http://publicatio.bibl.u-szeged.hu/13122/1/Catalysts8201822_u.pdf
identifier:     Dobó Dorina Gabriella;  Sipos Dániel;  Sápi András;  London Gábor;  Juhász Koppány Levente;  Kukovecz Ákos;  Kónya Zoltán: Tuning the activity and selectivity of phenylacetylene hydrosilylation with triethylsilane in the liquid phase over size controlled Pt nanoparticles.   CATALYSTS, 8 (1).  Terjedelem: 9 p.-Azonosító: 22.  ISSN 2073-4344 (2018)     
identifier: doi:10.3390/catal8010022
relation: 3316615
language: eng