Nanosized Au/C catalyst obtained from a tetraamminegold(III) precursor: Synthesis, characterization, and catalytic activity in low-temperature CO oxidation

Autor:	D. A. Zyuzin, Valerii I. Bukhtiyarov, Anna V. Nartova, B. L. Moroz, P. A. Pyryaev
Rok vydání:	2010
Předmět:	Chemistry Cationic polymerization General Chemistry Catalysis Computer Science Applications Metal Crystallography Adsorption X-ray photoelectron spectroscopy Chemical engineering Transmission electron microscopy Modeling and Simulation visual_art visual_art.visual_art_medium Nanometre Particle size
Zdroj:	Kinetics and Catalysis. 51:885-892
ISSN:	1608-3210 0023-1584
DOI:	10.1134/s0023158410060145
Popis:	A method in which the water-soluble complex [Au(NH3)4](NO3)3 is used as the active-component precursor is suggested for preparing nanosized Au/C catalysts (C = Sibunit, a mesoporous carbon material). The complex is unreadily reducible by the carbon matrix and can be involved in cation exchange with proton-containing groups of the support. This method is referred to as cationic adsorption. It has been demonstrated by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy that the catalyst prepared in this way and treated with H2 at 400°C contains size-uniform gold metal particles with a dominant diameter of
Databáze:	OpenAIRE
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