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Research on Chemical Intermediates

, Volume 22, Issue 1, pp 53–60 | Cite as

ORTHO-selective phenol methylation over iron-magnesium oxide catalysts

  • Hanna Grabowska
  • Janusz Jabłoński
  • Włodzimierz Miśta
  • Józef Wrzyszcz
Article

Abstract

Alkylation of phenol to ORTHO-cresol and 2,6-xylenol with methanol in the presence of iron and iron-magnesium oxide catalysts was investigated. The catalysts displayed high activity and stability. Addition of magnesium oxide to the iron catalyst increases its selectivity towards C-alkylation in ortho-position. It was found that the active phase in the investigated catalysts is highly dispersed magnetite or mixed spinel of Fe(MgFe)O4 type. It is noticed that if Fe+2 ions are replaced by Mg+2 ions in the spinel the basicity of the bifunctional catalyst is augmented, increasing ortho-selectivity of alkylation.

Keywords

Magnetite Anisole Fresh Catalyst Xylenol Iron Catalyst 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 1996

Authors and Affiliations

  • Hanna Grabowska
    • 1
  • Janusz Jabłoński
    • 1
  • Włodzimierz Miśta
    • 1
  • Józef Wrzyszcz
    • 1
  1. 1.W. Trzebiatowski Institute of Low Temperature and Structure ResearchPolish Academy of SciencesWrocław 2Poland

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