Journal ArticleDOI
Pd nanoparticles prepared by "controlled colloidal synthesis" in solid/liquid interfacial layer on silica. I. Particle size regulation by reduction time
Andrea Beck,Anita Horváth,A. Szűcs,Zoltán Schay,Zsolt Endre Horváth,Z. Zsoldos,Imre Dékány,L. Guczi +7 more
TLDR
Controlled colloidal synthesis (CCS) was developed to prepare monodisperse palladium particles in the nano-scale range on suspended SiO2 particles in an ethanol-toluene mixture as mentioned in this paper.Abstract:
Controlled colloidal synthesis (CCS) was developed to prepare monodisperse palladium particles in the nano-scale range on suspended SiO2 particles in an ethanol–toluene mixture. On colloidal SiO2 an about 1 nm thick ethanol-rich adsorption layer was produced in adsorption equilibrium with the liquid mixture. Ethanol served as a reducing agent for the Pd(II) ions diffusing from a toluene-rich liquid solution into the interfacial layer. The low reduction rate ensures the dominancy of particle growth over the nucleation of palladium during the reduction process after the initial nucleation. The relation between the reduction time and the particle size produced was studied. XRF, XPS, TEM, CO chemisorption, and benzene hydrogenation as catalytic test were employed to characterize the samples prepared using different reduction time.read more
Citations
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Journal ArticleDOI
Reduced transition metal colloids: a novel family of reusable catalysts
Journal ArticleDOI
Synthesis of supported palladium catalysts
TL;DR: In this paper, the authors reviewed the synthesis of supported palladium catalysts with emphasis on a summary of the chemistry of catalyst synthesis, oxide and carbon support properties and case studies from the period 1990 to 2000.
Reference EntryDOI
Particle Size and Dispersion Measurements
Gérard Bergeret,Pierre Gallezot +1 more
TL;DR: The relationship between Particle size, surface area, and dispersal is discussed in this article, where the authors propose a method to measure the nuclearity of a particle by gas chemisorption.
Journal ArticleDOI
Hydrogenation of acetylene over low loaded Pd and Pd-Au/SiO2 catalysts
TL;DR: In this article, a series of Pd and Pd-Au/SiO2 catalysts differing in metal particle size (D=0.47 and 0.08) were tested in pulse-flow experiments.
Journal ArticleDOI
Effects of dielectric barrier discharge plasma on the catalytic activity of Pt/CeO2 catalysts
Bangfen Wang,Bingxu Chen,Yuhai Sun,Hailin Xiao,Xiaoxin Xu,Mingli Fu,Junliang Wu,Limin Chen,Daiqi Ye +8 more
TL;DR: In this article, a modified CeO2 nanorod was synthesized by a hydrothermal method and impregnated with Pt to synthesize Pt/CeO2 catalysts, which were modified by dielectric barrier discharge plasma.
References
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Principles and applications of organotransition metal chemistry
TL;DR: A perspective survey of organotransition metal complexes according to ligand substitution processes can be found in this paper, with a focus on transition metal complexes with metal carbon-bonded ligands.
Journal ArticleDOI
The infrared spectrum of carbon monoxide on reduced and oxidized palladium
TL;DR: The spectra of carbon monoxide adsorbed on a silica-supported, 9% palladium catalyst has been studied in conjunction with adsorption studies of carbon dioxide and oxygen as mentioned in this paper.
Journal ArticleDOI
Elementary steps in the formation of highly dispersed palladium in NaY: II. Particle formation and growth
TL;DR: In this article, it was shown that the processes which lead to Pd particle formation during reduction with H 2 are entirely different for these two cases, and that isolated Pd atoms are incapable of dissociatively chemisorbing H 2.
Journal ArticleDOI
Model catalysts fabricated using electron beam lithography and pulsed laser deposition
TL;DR: In this article, supported metal nanoparticles have been fabricated using electron beam lithography (EBL) and pulsed laser deposition (PLD) and ordered two-dimensional arrays with particle diameters of 40 cm.
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