Catalytic conversion of 1,2-dichlorobenzene over mesoporous materials from zeolite.
In this study, 1,2-dichlorobenzene (DCB), an important precursor of PCDDs and PCDFs, was chosen as a suitable model compound for the catalyzed deep oxidation of dioxin. The recently developed mesoporous materials from zeolites (MMZ) were used for the first time as a support for an oxidation catalyst. The catalytic oxidation of 1,2-dichlorobenzene over Pt/MMZ was carried out, and the catalytic activity was compared with that of Pt/gamma-Al2O3, Pt/Al-MCM-41 and Pt/Beta catalysts. Pt/MMZ showed the highest catalytic activity among the catalysts tested. Interestingly, the catalytic activity of Pt/MMZ was maintained (> 40%) at low temperatures (250 degrees C) at which the other catalysts showed extremely low activity (< 5%). The high catalytic activity of Pt/MMZ was attributed to both the sufficient acidity and mesoporosity of the MMZ support.
Lee
Hyung Ik
HI
Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea.
Kim
Ji Man
JM
Lee
Jai-Young
JY
Park
Young-Kwon
YK
Jeon
Jong-Ki
JK
Yim
Jin-Heong
JH
Park
Sung Hoon
SH
Lee
Kyung-Jin
KJ
Kim
Seung-Soo
SS
Jeong
Kwang-Eun
KE