Electrospun Au/CeO2 nanofibers: A highly accessible low-pressure drop catalyst for preferential CO oxidation
Resumen: Au/CeO2 catalysts shaped as nanofibers were obtained by supporting Au nanoparticles (ca. 3 nm) on CeO2 nanofibers of around 200 nm diameter. The CeO2 support was prepared by calcining electrospun polymer nanocomposite fibers with a high Ce content; then gold nanoparticles were either synthesized in situ or deposited from a suspension. The prepared catalysts were used in the preferential oxidation of CO in a hydrogen-rich stream. The catalysts prepared by deposition of preformed gold nanoparticles were less stable and underwent sintering due to a weaker nanoparticle–support interaction. In contrast, the catalysts with Au nanoparticles synthesized in situ were active (90% conversion and 46% selectivity) and stable. The fiber-shaped catalyst was able to give maximum reactant access at a much lower pressure drop than catalyst in powder form.
Idioma: Inglés
DOI: 10.1016/j.jcat.2015.06.011
Año: 2015
Publicado en: JOURNAL OF CATALYSIS 329 (2015), 479-489
ISSN: 0021-9517

Factor impacto JCR: 7.354 (2015)
Categ. JCR: ENGINEERING, CHEMICAL rank: 4 / 135 = 0.03 (2015) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 20 / 144 = 0.139 (2015) - Q1 - T1

Factor impacto SCIMAGO:

Financiación: info:eu-repo/grantAgreement/ES/DGA/B008-12
Financiación: info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626
Tipo y forma: Article (PostPrint)
Área (Departamento): Ingeniería Química (Departamento de Ingeniería Química y Tecnologías del Medio Ambiente)

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