Catalytic ozonation of PCE by clay from tidal flat sediments

Hung Ho Chung; Jinho Jung; Jeong Hyo Yoon; Myun Joo Lee

doi:10.1023/A:1014933620087

Catalytic ozonation of PCE by clay from tidal flat sediments

Hung Ho Chung, Jinho Jung, Jeong Hyo Yoon, Myun Joo Lee

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

9 Citations (Scopus)

Abstract

Clay from tidal flat sediments showed an efficient catalytic activity in the decomposition of PCE by ozonation where the thermal treatment of clay enhanced the catalytic activity. No changes in XRD patterns of clays by the thermal treatment were observed, while EPR spectra were significantly changed. The intensity of the EPR signal that arises from natural radiation defect was decreased with increasing thermal treatment temperature, which enhanced the PCE removal efficiency. Contrary to ozonation alone, superoxide radicals were detected from ozonation in the presence of clay. This suggests that the superoxide radicals further increase PCE decomposition.

Original language	English
Pages (from-to)	77-79
Number of pages	3
Journal	Catalysis Letters
Volume	78
Issue number	1-4
DOIs	https://doi.org/10.1023/A:1014933620087
Publication status	Published - 2002 Mar
Externally published	Yes

Keywords

Catalyst
Clay
EPR
Ozonation
PCE

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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title = "Catalytic ozonation of PCE by clay from tidal flat sediments",

abstract = "Clay from tidal flat sediments showed an efficient catalytic activity in the decomposition of PCE by ozonation where the thermal treatment of clay enhanced the catalytic activity. No changes in XRD patterns of clays by the thermal treatment were observed, while EPR spectra were significantly changed. The intensity of the EPR signal that arises from natural radiation defect was decreased with increasing thermal treatment temperature, which enhanced the PCE removal efficiency. Contrary to ozonation alone, superoxide radicals were detected from ozonation in the presence of clay. This suggests that the superoxide radicals further increase PCE decomposition.",

keywords = "Catalyst, Clay, EPR, Ozonation, PCE",

author = "Chung, {Hung Ho} and Jinho Jung and Yoon, {Jeong Hyo} and Lee, {Myun Joo}",

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language = "English",

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AU - Chung, Hung Ho

AU - Jung, Jinho

AU - Yoon, Jeong Hyo

AU - Lee, Myun Joo

PY - 2002/3

Y1 - 2002/3

N2 - Clay from tidal flat sediments showed an efficient catalytic activity in the decomposition of PCE by ozonation where the thermal treatment of clay enhanced the catalytic activity. No changes in XRD patterns of clays by the thermal treatment were observed, while EPR spectra were significantly changed. The intensity of the EPR signal that arises from natural radiation defect was decreased with increasing thermal treatment temperature, which enhanced the PCE removal efficiency. Contrary to ozonation alone, superoxide radicals were detected from ozonation in the presence of clay. This suggests that the superoxide radicals further increase PCE decomposition.

AB - Clay from tidal flat sediments showed an efficient catalytic activity in the decomposition of PCE by ozonation where the thermal treatment of clay enhanced the catalytic activity. No changes in XRD patterns of clays by the thermal treatment were observed, while EPR spectra were significantly changed. The intensity of the EPR signal that arises from natural radiation defect was decreased with increasing thermal treatment temperature, which enhanced the PCE removal efficiency. Contrary to ozonation alone, superoxide radicals were detected from ozonation in the presence of clay. This suggests that the superoxide radicals further increase PCE decomposition.

KW - Catalyst

KW - Clay

KW - EPR

KW - Ozonation

KW - PCE

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Catalytic ozonation of PCE by clay from tidal flat sediments

Abstract

Keywords

ASJC Scopus subject areas

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