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 | |
| Publication status | Published - 2002 Mar 1 |
| Externally published | Yes |
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Keywords
- Catalyst
- Clay
- EPR
- Ozonation
- PCE
ASJC Scopus subject areas
- Catalysis
- Physical and Theoretical Chemistry
Cite this
Catalytic ozonation of PCE by clay from tidal flat sediments. / Chung, Hung H.; Jung, Jinho; Yoon, Jeong H.; Lee, Myun J.
In: Catalysis Letters, Vol. 78, No. 1-4, 01.03.2002, p. 77-79.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Catalytic ozonation of PCE by clay from tidal flat sediments
AU - Chung, Hung H.
AU - Jung, Jinho
AU - Yoon, Jeong H.
AU - Lee, Myun J.
PY - 2002/3/1
Y1 - 2002/3/1
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
UR - http://www.scopus.com/inward/record.url?scp=0036488982&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036488982&partnerID=8YFLogxK
U2 - 10.1023/A:1014933620087
DO - 10.1023/A:1014933620087
M3 - Article
AN - SCOPUS:0036488982
VL - 78
SP - 77
EP - 79
JO - Catalysis Letters
JF - Catalysis Letters
SN - 1011-372X
IS - 1-4
ER -