Preparation of Au/TiO2 Catalyst by a Liquid-Phase Reduction Method for Preferential Oxidation of Carbon Monoxide in a Hydrogen Rich-Stream (CO-PROX reaction)

Autor:	Julian M. de Souza Pereira, Ligia Ciotti, Jorge Moreira Vaz, Estevam Vitorio Spinacé
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	Au nanoparticles TiO2 hydrogen carbon monoxide CO-PROX reaction Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research, Vol 21, Iss 2 (2017)
Druh dokumentu:	article
ISSN:	1516-1439 1980-5373
DOI:	10.1590/1980-5373-mr-2017-0756
Popis:	Au nanoparticles supported on TiO2 were prepared by a liquid-phase reduction method using HAuCl4.3H2O as the Au precursor, TiO2 as the support, a solution of ethylene glycol/water as solvent and reducing agent and sodium citrate as reducing agent and stabilizer. The Au/TiO2 catalysts were prepared using different routes and characterized by Energy-dispersive X-ray spectroscopy, X-ray diffraction and Transmission Electron Microscopy and tested for preferential oxidation of carbon monoxide in hydrogen-rich stream (CO-PROX reaction). The way that the Au precursor, the TiO2 support and the sodium citrate is added to the ethylene glycol/water solution strongly influences the Au nanoparticle sizes and the catalytic activity of the obtained materials.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/e79019361d9b4fdda3681652f1fb4f42 Zobrazit plný text záznamu View record in DOAJ