Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids

Xiaoxia Ou, Helen Daly, Sarayute Chansai, Simon K. Beaumont, Xiaolei Fan, Christopher Hardacre

Research output: Journal PublicationArticlepeer-review

1 Citation (Scopus)

Abstract

The effect of concentrated NaCl (200 g L−1) on CWO of oxalic acid and acetic acid over MnCeOx was investigated at 110 °C and 0.5 MPa O2 to explore the potential of using CWO for shale gas wastewater treatment. The presence of concentrated NaCl hindered oxalic acid conversion, which from ATR-IR spectroscopy was attributed to the salting out effect increasing the oxalic acid surface coverage with formation of strongly adsorbed intermediates, slowing oxalic acid mineralisation. In addition, the weak adsorption of acetic acid on MnCeOx was proposed to be responsible for the insignificant conversion with or without NaCl present.

Original languageEnglish
Article number106395
JournalCatalysis Communications
Volume162
DOIs
Publication statusPublished - Feb 2022
Externally publishedYes

Keywords

  • Catalytic wet oxidation (CWO)
  • In situ ATR spectroscopy
  • MnCeO
  • Salt effect

ASJC Scopus subject areas

  • Catalysis
  • Chemistry (all)
  • Process Chemistry and Technology

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