Effect of copper loadings on product selectivities in microwave-enhanced degradation of phenol on alumina-supported copper oxides

B. Y. Jibril, A. Y. Atta, Y. M. Al-Waheibi, T. K. Al-Waheibi

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Alumina-supported copper oxides catalysts were prepared using impregnation method and characterized using XRD, SEM and BET. Catalytic activities in phenol removal from its aqueous solution (200ppm) were studied using hydrogen peroxide as an oxidant under microwave irradiation. Effects of copper loadings, reaction temperatures (50 and 70°C) and pH (5 and 9) were studied. The high loading samples (9-14wt%) exhibited 97% phenol removal efficiency corresponding to 90% total organic carbon (TOC) value. Lower loading samples (1wt%) showed significantly lower phenol removals and inferior catalyst stability. At similar levels of phenol degradations, there was higher proportion of high molecular weight products or intermediates on 14 than on 1wt% copper/Al2O3.

Original languageEnglish
Pages (from-to)1800-1804
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume19
Issue number6
DOIs
Publication statusPublished - Nov 25 2013

Fingerprint

Copper oxides
Aluminum Oxide
Phenol
Phenols
Copper
Alumina
Microwaves
Degradation
Catalysts
Microwave irradiation
Organic carbon
Oxidants
Hydrogen peroxide
Impregnation
Hydrogen Peroxide
Catalyst activity
Molecular weight
Scanning electron microscopy
Temperature

Keywords

  • Alumina
  • Copper oxides
  • Microwavep
  • Phenol
  • Wastewater

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

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AU - Jibril, B. Y.

AU - Atta, A. Y.

AU - Al-Waheibi, Y. M.

AU - Al-Waheibi, T. K.

PY - 2013/11/25

Y1 - 2013/11/25

N2 - Alumina-supported copper oxides catalysts were prepared using impregnation method and characterized using XRD, SEM and BET. Catalytic activities in phenol removal from its aqueous solution (200ppm) were studied using hydrogen peroxide as an oxidant under microwave irradiation. Effects of copper loadings, reaction temperatures (50 and 70°C) and pH (5 and 9) were studied. The high loading samples (9-14wt%) exhibited 97% phenol removal efficiency corresponding to 90% total organic carbon (TOC) value. Lower loading samples (1wt%) showed significantly lower phenol removals and inferior catalyst stability. At similar levels of phenol degradations, there was higher proportion of high molecular weight products or intermediates on 14 than on 1wt% copper/Al2O3.

AB - Alumina-supported copper oxides catalysts were prepared using impregnation method and characterized using XRD, SEM and BET. Catalytic activities in phenol removal from its aqueous solution (200ppm) were studied using hydrogen peroxide as an oxidant under microwave irradiation. Effects of copper loadings, reaction temperatures (50 and 70°C) and pH (5 and 9) were studied. The high loading samples (9-14wt%) exhibited 97% phenol removal efficiency corresponding to 90% total organic carbon (TOC) value. Lower loading samples (1wt%) showed significantly lower phenol removals and inferior catalyst stability. At similar levels of phenol degradations, there was higher proportion of high molecular weight products or intermediates on 14 than on 1wt% copper/Al2O3.

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