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

doi:10.1016/j.catcom.2021.106395

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 Publication › Article › peer-review

1 Citation (Scopus)

Abstract

The effect of concentrated NaCl (200 g L⁻¹) on CWO of oxalic acid and acetic acid over MnCeO_x 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 MnCeO_x was proposed to be responsible for the insignificant conversion with or without NaCl present.

Original language	English
Article number	106395
Journal	Catalysis Communications
Volume	162
DOIs	https://doi.org/10.1016/j.catcom.2021.106395
Publication status	Published - Feb 2022
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.catcom.2021.106395

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title = "Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids",

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.",

keywords = "Catalytic wet oxidation (CWO), In situ ATR spectroscopy, MnCeO, Salt effect",

author = "Xiaoxia Ou and Helen Daly and Sarayute Chansai and Beaumont, {Simon K.} and Xiaolei Fan and Christopher Hardacre",

note = "Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

month = feb,

doi = "10.1016/j.catcom.2021.106395",

language = "English",

volume = "162",

journal = "Catalysis Communications",

issn = "1566-7367",

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TY - JOUR

T1 - Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids

AU - Ou, Xiaoxia

AU - Daly, Helen

AU - Chansai, Sarayute

AU - Beaumont, Simon K.

AU - Fan, Xiaolei

AU - Hardacre, Christopher

PY - 2022/2

Y1 - 2022/2

N2 - 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.

AB - 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.

KW - Catalytic wet oxidation (CWO)

KW - In situ ATR spectroscopy

KW - MnCeO

KW - Salt effect

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DO - 10.1016/j.catcom.2021.106395

M3 - Article

AN - SCOPUS:85122306588

SN - 1566-7367

VL - 162

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106395

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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