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Nano-dimensional CeO2 nanorods for high Ni loading catalysts: H2 production by autothermal steam reforming of methanol reaction.
MedLine Citation:
PMID:  23793517     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
CeO2 nanorods were synthesized by a hydrothermal method and used as the support for preparing a series of Ni/CeO2 nanorod catalysts. The surface area of the catalysts decreased when the Ni percent over the CeO2 nanorods was increased. SEM results showed that the CeO2 is formed by nanorods approximately 1 μm in length. TEM and HREM revealed that the width of the nanorods is about 8 nm and it grew along the [1 1 1[combining macron]] axis. The catalytic activity of the catalysts was improved as the Ni was loaded onto CeO2 nanorods. The exposed planes of the CeO2 nanorod structure along the zone axis [0 1 1] for Ni impregnation were (1[combining macron] 1[combining macron] 1), (1 1 1[combining macron]), (1 1[combining macron] 1), (1[combining macron] 1 1[combining macron]), (2 0 0) and (2[combining macron] 0 0) and they were more reactive for methanol conversion than (2[combining macron] 2[combining macron] 0), (2[combining macron] 0 2[combining macron]), (0 2 2[combining macron]), (0 2[combining macron] 2), (2 0 2) and (2 2 0) planes from the [1 1 1[combining macron]] axis (growth direction of the nanorod). This finding is mainly ascribed to the synergistic effect of the CeO2 nanorods and the Ni.
Authors:
R Pérez-Hernández; G Mondragón-Galicia; A Allende Maravilla; J Palacios
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-6-24
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2013 Jun 
Date Detail:
Created Date:  2013-6-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Instituto Nacional de Investigaciones Nucleares, Carr. México-Toluca. S/N. La Marquesa, Ocoyoacac, Edo. de México C. P. 52750, Mexico. raul.perez@inin.gob.mx.
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