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Pt-CeO2 nanoporous spheres - an excellent catalyst for partial oxidation of methane: Effect of bimodal pore structure

Abstract

Pt-CeO2 nanoporous spheres were prepared by two step synthesis procedure. First, CeO2 nanoporous spheres were prepared by solvo-thermal method followed by Pt-loading by controlled deposition. Synthesized catalysts were characterized by BET-Surface area, H2-Chemisorption, XRDH2-TPR, SEM, TEM, XPS, Raman analysis and EXAFS techniques. Prepared Pt-CeO2NP catalyst showed bimodal pore structure, which highly influenced catalytic activity of it. The catalyst activates methane at 350 °C and was found to be highly active and selective for synthesis gas production via partial oxidation of methane. Average 1.27 nm Pt-nanoparticles supported on about 150 nm nanoporous spheres comprised of 5-15 nm of CeO2 particles was stable for more than 60 h of time on stream (TOS) without any significant activity loss, producing synthesis gas with H2/CO ratio ~1.95. High surface area and bimodal pore size distribution played the most important role for the catalysts superior activity.

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Publication details

The article was received on 24 Jul 2017, accepted on 12 Sep 2017 and first published on 12 Sep 2017


Article type: Paper
DOI: 10.1039/C7CY01493G
Citation: Catal. Sci. Technol., 2017, Accepted Manuscript
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    Pt-CeO2 nanoporous spheres - an excellent catalyst for partial oxidation of methane: Effect of bimodal pore structure

    R. K. Singha, A. Shukla, A. Yadav, T. Sasaki, A. Sandupatla, G. Deo and R. BAL, Catal. Sci. Technol., 2017, Accepted Manuscript , DOI: 10.1039/C7CY01493G

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