SABER UCV >
1) Investigación >
Artículos Publicados >

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/123456789/11468

Título : CO2 reforming of CH4 over CoeLa-based perovskite-type catalyst precursors
Autor : Valderrama, Gustavo
Urbina de Navarro, Caribay
Goldwasser, Mireya
Palabras clave : Dry reforming Syngas Perovskite-type oxide Auto combustion method Co0 nano-particles
Fecha de publicación : 20-Jul-2015
Resumen : A series of perovskite-type oxides based on LaeSreCo (La1 xSrxCoO3) were synthesized by the auto combustion method and used as precursors for the catalytic methane dry reforming (MDR) at 1073 K, atmospheric pressure under continuous flow of reactant gases with a CH4:CO2 ¼ 1:1 ratio. Catalysts were characterized by techniques such as X-ray diffraction (XRD), BET specific surface area, temperatureprogrammed reduction-oxidation (TPReTPO) and scanning-transmission electron microscopy (SEM eTEM). Formation of LaeSreCoeO solid solutions was confirmed by the more intense diffraction peaks and cell parameter measurements. It was observed that the activation/reduction process occurs through intermediary species producing Co0 nano-size particles over the SrO and La2O3 phases, which are highly dispersed in the La2O2CO3eSrO solid matrix responsible for the high activity and low carbon formation despite the severe reaction conditions used. The presence of Sr in doping quantities slightly promotes secondary reactions such as carbon formation and wateregas shift retarding partially the dry reforming reaction.
URI : http://saber.ucv.ve/jspui/handle/123456789/11468
ISSN : 0378-7753
Aparece en las colecciones: Artículos Publicados

Ficheros en este ítem:

Fichero Descripción Tamaño Formato
CO2 reforming of CH4 over CoLa-based perovskite.pdf1.06 MBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2008 MIT and Hewlett-Packard - Comentarios