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http://dx.doi.org/10.7464/ksct.2010.16.1.012

Decomposition of Dibenzothiophene Sulfone over KF/MgO Catalysts  

Kim, Hyeon-Joo (Department of Chemical Engineering, Kongju National University)
Jeong, Kwang-Eun (Green Chemistry Research Division, Korea Research Institute of Chemical Technology)
Jeong, Soon-Yong (Green Chemistry Research Division, Korea Research Institute of Chemical Technology)
Park, Young-Kwon (School of Environmental Engineering, University of Seoul)
Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University)
Publication Information
Clean Technology / v.16, no.1, 2010 , pp. 12-18 More about this Journal
Abstract
The object of the present study is to apply KF/MgO catalysts to remove sulfur dioxide from dibenzothiophene sulfone, a by-product of oxidative desulfurization. Potassium fluoride was deposited via an impregnation method on MgO. The effects KF loading and calcination on the characteristics of the KF/MgO catalysts were investigated through the BET surface area, XRF, XRD, and temperature-programmed desorption of $CO_2$. The catalytic performances of the samples were investigated during the decomposition of dibenzothiophene sulfone to biphenyl and sulfur dioxide gas. KF loaded on MgO prepared by the impregnation method showed high catalytic activities for the decomposition of dibenzothiophene sulfone. The higher activity of KF/MgO just dried at 373 K, avoiding the usual activation at high temperature, than that over the calcined catalyst is ascribed to increase of the amount of basic sites. The high basicity probably may be due to the coordinately unsaturated $F^-$. The simply dried 10 % KF/MgO catalyst, without the usual activation at high temperature, showed the optimal catalytic properties.
Keywords
Oxidative desulfurization; Dibenzothiophene sulfone; Solid base catalyst; KF/MgO;
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Times Cited By KSCI : 2  (Citation Analysis)
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