Preparation of highly dispersed and thermally stable nanosized cerium–hafnium solid solutions over silica surface: Structural and catalytic evaluation

A highly dispersed and thermally stable nanosized cerium–hafnium solid solution over silica support has been synthesized. The obtained catalyst exhibited a high specific surface area and superior redox as well as acid–base properties. To unveil dispersion and thermal stability, samples were thermall...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2012, 18(3), , pp.1128-1135
Main Authors: Bharali, Pankaj, Thrimurthulu, Gode, Katta, Lakshmi, Reddy, Benjaram M.
Format: Article
Language:English
Subjects:
4-Methylpent-1-ene
4-Methylpentan-2-ol
Catalysis
Catalyst characterization
Catalysts
Cerium–hafnium solid solution
Dehydration
Dispersion
International Space Station
Nanomaterials
Nanostructure
Solid solutions
Thermal stability
화학공학
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Summary:A highly dispersed and thermally stable nanosized cerium–hafnium solid solution over silica support has been synthesized. The obtained catalyst exhibited a high specific surface area and superior redox as well as acid–base properties. To unveil dispersion and thermal stability, samples were thermally annealed at various temperatures from 773 to 1073K and investigated by means of XRD, TEM, XPS, ISS, Raman spectroscopy and other techniques. Catalytic activity was evaluated for selective dehydration of 4-methylpentan-2-ol to 4-methylpent-1-ene in the vapor phase. The designed catalyst exhibited better activity and selectivity, and the observed catalytic properties were correlated with structural features.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2012.01.017