TY - JOUR
T1 - The effect of titania precursors and ceria loadings on textural and chemical properties of TiO2–CeO2 and Pt–Rh/TiO2–CeO2
AU - Miranda-Sánchez, Jocelyn
AU - Elizalde, Ignacio
AU - Lartundo-Rojas, Luis
AU - Hernández-Pérez, Isaías
AU - Jaramillo-Vigueras, David
AU - Ramírez-López, Román
N1 - Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Abstract: The paper presents the results of the authors regarding the synthesis of TiO2–CeO2 mixed oxides using different precursors: (1) titanium isopropoxide and (2) titanium butoxide with different ceria loadings. The samples were characterized from chemical, structural and morphological point of view. The obtained powders were used as support for Pt–Rh impregnation and the influence the Pt–Rh in reduction of the support was established. From XPS, TPR and EPR analysis it was concluded that Ce3+ species are present in higher proportion (>50 %) in series supported Pt–Rh catalysts and it was taken as indicative of oxygen mobility. Correlation between ceria loading and percentage of Ce3+ in catalytic samples was observed. It was also evident that Rh addition allows increasing the reducibility of materials due to interactions metal-support.
AB - Abstract: The paper presents the results of the authors regarding the synthesis of TiO2–CeO2 mixed oxides using different precursors: (1) titanium isopropoxide and (2) titanium butoxide with different ceria loadings. The samples were characterized from chemical, structural and morphological point of view. The obtained powders were used as support for Pt–Rh impregnation and the influence the Pt–Rh in reduction of the support was established. From XPS, TPR and EPR analysis it was concluded that Ce3+ species are present in higher proportion (>50 %) in series supported Pt–Rh catalysts and it was taken as indicative of oxygen mobility. Correlation between ceria loading and percentage of Ce3+ in catalytic samples was observed. It was also evident that Rh addition allows increasing the reducibility of materials due to interactions metal-support.
KW - Ceria loading
KW - Rh-ceria interaction
KW - TiO–CeO
KW - Titania precursor
UR - http://www.scopus.com/inward/record.url?scp=84939948083&partnerID=8YFLogxK
U2 - 10.1007/s10971-015-3652-1
DO - 10.1007/s10971-015-3652-1
M3 - Artículo
SN - 0928-0707
VL - 74
SP - 707
EP - 717
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
IS - 3
ER -