Red mud and fly ash supported Co catalysts for phenol oxidation

Edy Saputra; Syaifullah Muhammad; Hongqi Sun; Ha Ming Ang; Moses O. Tadé; Shaobin Wang

doi:10.1016/j.cattod.2011.10.025

Red mud and fly ash supported Co catalysts for phenol oxidation

Edy Saputra, Syaifullah Muhammad, Hongqi Sun, Ha Ming Ang, Moses O. Tadé, Shaobin Wang

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

Industrial wastes, red mud (RM) and fly ash (FA), were employed as supports for synthesis of Co-oxide based catalysts. Co/RM and Co/FA were characterised by X-ray diffraction (XRD), scanning electron microscopy coupling with energy dispersive spectroscopy (SEM-EDS), elemental mapping, and UV-vis diffuse reflectance spectroscopy. Their catalytic activity in oxone activation for phenol degradation for wastewater treatment was tested. It was found that Co oxide on the catalysts was present in the Co ₃O ₄ phase and the oxide showed better dispersion on RM. Co/FA and Co/RM could degrade phenol with the presence of oxone and Co/RM exhibited much higher activity than Co/FA, due to high dispersion of Co oxide and surface basicity of RM. Higher oxone concentration in solution enhanced phenol degradation efficiency and reaction temperature also promoted phenol degradation. Kinetic studies showed that phenol degradation followed first order kinetics and the activation energies on Co/RM and Co/FA were found to be 66.3 and 47.0 kJ/mol, respectively.

Original language	English
Pages (from-to)	68-72
Number of pages	5
Journal	Catalysis Today
Volume	190
Issue number	1
DOIs	https://doi.org/10.1016/j.cattod.2011.10.025
Publication status	Published - 1 Aug 2012
Externally published	Yes

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10.1016/j.cattod.2011.10.025

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title = "Red mud and fly ash supported Co catalysts for phenol oxidation",

abstract = "Industrial wastes, red mud (RM) and fly ash (FA), were employed as supports for synthesis of Co-oxide based catalysts. Co/RM and Co/FA were characterised by X-ray diffraction (XRD), scanning electron microscopy coupling with energy dispersive spectroscopy (SEM-EDS), elemental mapping, and UV-vis diffuse reflectance spectroscopy. Their catalytic activity in oxone activation for phenol degradation for wastewater treatment was tested. It was found that Co oxide on the catalysts was present in the Co 3O 4 phase and the oxide showed better dispersion on RM. Co/FA and Co/RM could degrade phenol with the presence of oxone and Co/RM exhibited much higher activity than Co/FA, due to high dispersion of Co oxide and surface basicity of RM. Higher oxone concentration in solution enhanced phenol degradation efficiency and reaction temperature also promoted phenol degradation. Kinetic studies showed that phenol degradation followed first order kinetics and the activation energies on Co/RM and Co/FA were found to be 66.3 and 47.0 kJ/mol, respectively.",

keywords = "Co catalyst, Fly ash, Oxone, Phenol degradation, Red mud, Water treatment",

author = "Edy Saputra and Syaifullah Muhammad and Hongqi Sun and Ang, {Ha Ming} and Tad{\'e}, {Moses O.} and Shaobin Wang",

year = "2012",

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doi = "10.1016/j.cattod.2011.10.025",

language = "English",

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T1 - Red mud and fly ash supported Co catalysts for phenol oxidation

AU - Saputra, Edy

AU - Muhammad, Syaifullah

AU - Sun, Hongqi

AU - Ang, Ha Ming

AU - Tadé, Moses O.

AU - Wang, Shaobin

PY - 2012/8/1

Y1 - 2012/8/1

N2 - Industrial wastes, red mud (RM) and fly ash (FA), were employed as supports for synthesis of Co-oxide based catalysts. Co/RM and Co/FA were characterised by X-ray diffraction (XRD), scanning electron microscopy coupling with energy dispersive spectroscopy (SEM-EDS), elemental mapping, and UV-vis diffuse reflectance spectroscopy. Their catalytic activity in oxone activation for phenol degradation for wastewater treatment was tested. It was found that Co oxide on the catalysts was present in the Co 3O 4 phase and the oxide showed better dispersion on RM. Co/FA and Co/RM could degrade phenol with the presence of oxone and Co/RM exhibited much higher activity than Co/FA, due to high dispersion of Co oxide and surface basicity of RM. Higher oxone concentration in solution enhanced phenol degradation efficiency and reaction temperature also promoted phenol degradation. Kinetic studies showed that phenol degradation followed first order kinetics and the activation energies on Co/RM and Co/FA were found to be 66.3 and 47.0 kJ/mol, respectively.

AB - Industrial wastes, red mud (RM) and fly ash (FA), were employed as supports for synthesis of Co-oxide based catalysts. Co/RM and Co/FA were characterised by X-ray diffraction (XRD), scanning electron microscopy coupling with energy dispersive spectroscopy (SEM-EDS), elemental mapping, and UV-vis diffuse reflectance spectroscopy. Their catalytic activity in oxone activation for phenol degradation for wastewater treatment was tested. It was found that Co oxide on the catalysts was present in the Co 3O 4 phase and the oxide showed better dispersion on RM. Co/FA and Co/RM could degrade phenol with the presence of oxone and Co/RM exhibited much higher activity than Co/FA, due to high dispersion of Co oxide and surface basicity of RM. Higher oxone concentration in solution enhanced phenol degradation efficiency and reaction temperature also promoted phenol degradation. Kinetic studies showed that phenol degradation followed first order kinetics and the activation energies on Co/RM and Co/FA were found to be 66.3 and 47.0 kJ/mol, respectively.

KW - Co catalyst

KW - Fly ash

KW - Oxone

KW - Phenol degradation

KW - Red mud

KW - Water treatment

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DO - 10.1016/j.cattod.2011.10.025

M3 - Article

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SN - 0920-5861

VL - 190

SP - 68

EP - 72

JO - Catalysis Today

JF - Catalysis Today

IS - 1

ER -

Red mud and fly ash supported Co catalysts for phenol oxidation

Abstract

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