Abstract
In this article, a facile solid state mixing of precursors with citric acid was employed for the synthesis of mesoporous ceria–zirconia solid solution (CZ), which further require a thermal treatment alone for the material development. The ceria and zirconia nanocrystals were also prepared by the same solid state mixing method. The as-synthesized samples were characterized by means of various structural and textural studies. The results depicted that the presence of citric acid is desired for the formation of a perfect CZ solid solution with microflake like morphology. It has an enhanced role in the determination of crystalline size, phase purity, morphology, surface area and pore parameters of the as-synthesized samples. The active phase over the CZ samples was found to be tetragonal. The selective vapour phase oxidation of benzyl alcohol (BzOH) to benzaldehyde was effectively carried in a fixed bed reactor in moderate air flow over the redox catalysts with a maximum BzOH conversion of 80 % with substantial durability and reusability.
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Acknowledgments
The authors would like to acknowledge UKM, grant numbers UKM-DIP-2012-04 and UKM-OUP-2012- 074 for the financial support and FST, CRIM, and SAIF (CUSAT) is acknowledged for material analysis. Manoj special thanks to University Research Scholarship, UKM for the doctorial fellowship and Binitha thanks to Universiti Grants Commission, New Delhi, India for the research award.
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Pudukudy, M., Yaakob, Z. & Narayanan, B. Selective Vapour Phase Oxidation of Benzyl Alcohol to Benzaldehyde over Mesoporous Ceria–Zirconia Solid Solution Synthesized Via a Facile Citrate Route. J Clust Sci 25, 1599–1614 (2014). https://doi.org/10.1007/s10876-014-0759-4
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DOI: https://doi.org/10.1007/s10876-014-0759-4