Structural and morphological properties of Ce1–xMxOy (M = Gd, La, Mg) supports for the catalysts of autothermal ethanol conversion

M. A. Kerzhentsev, E. V. Matus, I. Z. Ismagilov, V. A. Ushakov, O. A. Stonkus, T. V. Larina, G. S. Kozlova, P. Bharali, Z. R. Ismagilov

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9 Citations (Scopus)

Abstract

A complex of physicochemical methods (powder XRD analysis, transmission and scanning electron microscopy, electron spectroscopy of diffuse reflectance, low-temperature nitrogen adsorption) is used for the comparative study of structural and morphological properties of oxide supports Ce1–xMxOy (M = Gd, La, Mg; x = 0-0.5; 1.5 ≤ y ≤ 2.0) for catalysts for the autothermal reforming of bioethanol to a hydrogen-bearing gas. It is shown that Ce1–xMxOy samples synthesized by the method of ester polymer precursors are mesoporous materials being the homogenous substitutional solid solutions with the fluorite-type cubic structure. The structural and textural properties of the Ce1–xMxOy materials are regulated by varying the type of the dopant cation (M = Gd, La, Mg), the molar ratio M/Ce (0, 0.1, 0.25, 1), and heat treatment conditions (temperature 300-800 °C; duration 4-24 h). The relationship between the synthesis parameters and the characteristics of the Ce1–xMxOy materials is found.

Original languageEnglish
Pages (from-to)126-134
Number of pages9
JournalJournal of Structural Chemistry
Volume58
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • cerium dioxide
  • dopants
  • electron microscopy
  • electron spectroscopy of diffuse reflectance
  • nanomaterials
  • powder XRD analysis
  • OXIDE
  • SOLID-SOLUTIONS
  • CERIA
  • HYDROGEN-PRODUCTION
  • NI

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