Oxidative dehydrogenation of ethylbenzene with CO2 for styrene production over porous iron-based catalysts

Abstract Porous iron-based catalysts with different promoters (Zr, Ti or Al) have been tested in oxidative dehydrogenation of ethylbenzene with CO 2 for styrene production. The catalysts were characterized by X-ray diffraction (XRD), 57 Fe-Mossbauer and Raman spectroscopy, temperature-programmed reduction (TPR) and N 2 adsorption–desorption measurements, before and after the catalytic evaluation. The reactivity of iron-based catalysts toward styrene production was dependent on the structural and textural features of the solid as well as the nature of the promoter. α-Fe 2 O 3 and rutile TiO 2 present on FeTi were converted in situ into FeTiO 3 , Fe 2 TiO 5 and FeTi 2 O 5 , and these phases revealed a high styrene yield (up to 50%) in the first stage of the reaction, but lower selectivity than that exhibited by their FeZr and FeAl counterparts. However, FeTi performed much better in terms of stability showing no tendency to sintering or phase transformation whereas the other solids suffered from hard carbon deposition.

• Publication year

  2013

• Venue

  Fuel

• Publication date

  2013-06-01

• Fields of study

  Materials Science, Chemistry

• Identifiers
  DOI 10.1016/J.FUEL.2013.02.019
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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