caa a22 4500 463252063 CHVBK 20180405153343.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10562-007-9242-2 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9242-2 Characteristics and Catalytic Properties of Pd/SiO2 Synthesized by One-step Flame Spray Pyrolysis in Liquid-phase Hydrogenation of 1-Heptyne [Elektronische Daten] [Sirima Somboonthanakij, Okorn Mekasuwandumrong, Joongjai Panpranot, Tarit Nimmanwudtipong, Reto Strobel, Sotiris Pratsinis, Piyasan Praserthdam] In this study, Pd/SiO2 catalysts with 0.5-10wt.% Pd loadings were prepared by one-step flame spray pyrolysis (FSP) and characterized by N2 physisorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), CO chemisorption, and X-ray photoelectron spectroscopy (XPS). The average cluster/particles size of Pd as revealed by TEM were ca. 0.5-3nm. The turnover frequencies (TOFs) of the flame-made catalysts decreased from 66.2 to 4.3 per s as Pd loading increased from 0.5 to 10wt.%, suggesting that the catalytic activity was dependent on Pd particle/cluster size. However, there were no appreciable influences on 1-heptene selectivity. The flame-made Pd/SiO2 showed better properties than the conventional prepared catalysts. Their advantages are not only the presence of large pores that facilitates diffusion of the reactants and products, but also the high-catalytic activity of as-synthesized catalysts so that further pretreatment is not necessary. Springer Science+Business Media, LLC, 2007 Flame spray pyrolysis nationallicence Pd/SiO2 nationallicence Liquid phase hydrogenation nationallicence 1-Heptyne hydrogenation nationallicence Pd nanoparticle nationallicence Somboonthanakij Sirima Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut Mekasuwandumrong Okorn Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, 73000, Nakorn Pathom, Thailand aut Panpranot Joongjai Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut Nimmanwudtipong Tarit Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut Strobel Reto Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zentrum, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland aut Pratsinis Sotiris Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zentrum, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland aut Praserthdam Piyasan Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut Catalysis Letters Springer US; http://www.springer-ny.com 119/3-4(2007-12-01), 346-352 1011-372X 119:3-4<346 2007 119 10562 https://doi.org/10.1007/s10562-007-9242-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9242-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Somboonthanakij Sirima Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut NATIONALLICENCE 700 1- Mekasuwandumrong Okorn Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, 73000, Nakorn Pathom, Thailand aut NATIONALLICENCE 700 1- Panpranot Joongjai Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut NATIONALLICENCE 700 1- Nimmanwudtipong Tarit Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut NATIONALLICENCE 700 1- Strobel Reto Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zentrum, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland aut NATIONALLICENCE 700 1- Pratsinis Sotiris Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zentrum, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland aut NATIONALLICENCE 700 1- Praserthdam Piyasan Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Bangkok, Thailand aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 119/3-4(2007-12-01), 346-352 1011-372X 119:3-4<346 2007 119 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer