Molybdenum dopped copper ferrites as active catalysts for alcohols oxidative coupling

Gheorghiţa Mitran, Shaojiang Chen, Dong Seo

Research output: Contribution to journalArticle

Abstract

Copper ferrites dopped with molybdenum were studied in an oxidative coupling reaction between methanol and ethanol in the gas phase. The catalysts have been characterized by X-ray diffraction, where the presence of ferrite, magnetite, and tenorite phases was observed; scanning electron microscopy; UV-Vis spectroscopy; and Fourier-transform infrared spectroscopy, which highlighted the presence of octahedral coordination of isolated molybdena species. The catalyst with the highest activity in this reaction and with the highest selectivity to hydroxyacetone is the one that presents Lewis sites with weak acidity. The methyl and ethyl acetate selectivities are directly proportional to the Cu/Fe ratio. It has been observed that the presence of reduced copper sites is responsible for the selectivity in esters, while the presence of reduced iron and molybdenum sites is responsible for the acetol production.

Original languageEnglish (US)
Article number1871
JournalMaterials
Volume12
Issue number11
DOIs
StatePublished - Jun 1 2019

Fingerprint

Molybdenum
Ferrites
Copper
Alcohols
Ferrosoferric Oxide
Catalysts
Magnetite
Ultraviolet spectroscopy
Acidity
Fourier transform infrared spectroscopy
Ferrite
Methanol
Esters
Ethanol
Iron
Gases
X ray diffraction
Scanning electron microscopy
acetol
methyl acetate

Keywords

  • Ethyl acetate
  • Hydroxyacetone
  • Methyl acetate
  • Molybdenum-copper ferrites
  • Oxidative coupling

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Molybdenum dopped copper ferrites as active catalysts for alcohols oxidative coupling. / Mitran, Gheorghiţa; Chen, Shaojiang; Seo, Dong.

In: Materials, Vol. 12, No. 11, 1871, 01.06.2019.

Research output: Contribution to journalArticle

Mitran, Gheorghiţa ; Chen, Shaojiang ; Seo, Dong. / Molybdenum dopped copper ferrites as active catalysts for alcohols oxidative coupling. In: Materials. 2019 ; Vol. 12, No. 11.
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