Selective oxidation of styrene catalyzed by cerium-doped cobalt ferrite nanocrystals with greatly enhanced catalytic performance

Jinhui Tong, Wenyan Li, Lili Bo, Huan Wang, Yusen Hu, Zhixia Zhang, Abdulla Mahboob

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)

Abstract

The rare earth metal Ce-doped cobalt ferrite samples CexCo1−xFe2O4 (x = 0.1, 0.3, 0.5) were prepared by the sol–gel autocombustion route. The as-prepared samples were characterized by X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, ICP–atomic emission spectroscopy, and N2 physisorption. Their catalytic performance was evaluated in oxidation of styrene using hydrogen peroxide (30%) as oxidant. Compared with pristine CoFe2O4, the Ce-doped samples were found to be more efficient catalysts for the oxidation of styrene to benzaldehyde, with greatly enhanced catalytic performance. Especially, when Ce0.3Co0.7Fe2O4 was used as catalyst, 90.3% styrene conversion and 91.5% selectivity for benzaldehyde were obtained at 90 °C for 9 h reaction. The catalyst can be magnetically separated easily for reuse, and no obvious loss of activity was observed when it was reused in five consecutive runs.

Original languageEnglish
Pages (from-to)474-481
Number of pages8
JournalJournal of Catalysis
Volume344
DOIs
Publication statusPublished - Dec 1 2016
Externally publishedYes

Keywords

  • Hydrogen peroxide
  • Magnetic nanocrystals
  • Rare-earth-doped ferrites
  • Sol–gel autocombustion
  • Styrene oxidation

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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