One-pot synthesis of highly active Fe-containing MWW zeolite catalyst: Elucidation of Fe species and its impact on catalytic performance

Peipei Xiao, Yong Wang, Ryota Osuga, Junko N. Kondo, Toshiyuki Yokoi

Research output: Contribution to journalArticlepeer-review

Abstract

Fe-containing MWW zeolite catalysts in the absence (Fe-MWW) or presence of Al atoms (Fe,Al-MWW) were directly prepared by the hydrothermal synthesis approach. The nature of Fe species was systematically analyzed by UV–vis, in-situ NO adsorption FTIR spectroscopy, and H2-TPR technology. The presence of Al atoms in the synthesis gel seriously affected the chemical composition, textural properties, and the states of Fe species, hence made the catalytic activity in hydroxylation of benzene with H2O2 worse than the one without Al. Moreover, we found that the states of Fe species could be adjusted by changing the calcination temperature. The catalytic activity of Fe-MWW was improved by increasing the calcination temperature, while that of Fe,Al-MWW was weakened due to the degeneration of texture properties and the transformation of Fe species. Fe-MWW zeolite calcined at 750 °C exhibited the highest 8.3% yield and 94% selectivity to phenol in direct hydroxylation of benzene with H2O2.

Original languageEnglish
Pages (from-to)1070-1080
Number of pages11
JournalAdvanced Powder Technology
Volume32
Issue number4
DOIs
Publication statusPublished - 2021 Apr
Externally publishedYes

Keywords

  • Al-MWW
  • Benzene to phenol
  • Calcination temperature
  • Fe
  • Fe species
  • Fe-MWW

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanics of Materials

Fingerprint

Dive into the research topics of 'One-pot synthesis of highly active Fe-containing MWW zeolite catalyst: Elucidation of Fe species and its impact on catalytic performance'. Together they form a unique fingerprint.

Cite this