Catalytic activity of cerium-doped Ru/Al2O3 during ozonation of dimethyl phthalate |
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Authors: | Yunrui ZHOU Wanpeng ZHU Xun CHEN |
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Institution: | (1) Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China;(2) Department of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China |
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Abstract: | In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation with a cerium-doped
Ru/Al2O3 catalyst were studied. The catalytic contribution was calculated through the results of a comparison experiment. It showed
that doping cerium significantly enhanced catalytic activity. The total organic carbon (TOC) removal over the doped catalyst
at 100 min reached 75.1%, 61.3% using Ru/Al2O3 catalyst and only 14.0% using ozone alone. Catalytic activity reached the maximum when 0.2% of ruthenium and 1.0% of cerium
were simultaneously loaded onto Al2O3 support. Results of experiments on oxidation by ozone alone, adsorption of the catalyst, Ce ion’s and heterogeneous catalytic
ozonation confirmed that the contribution of heterogeneous catalytic ozonation was about 50%, which showed the obvious effect
of Ru-Ce/Al2O3 on catalytic activity.
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Translated from China Environmental Science, 2006, 26(4): 445–448 译自: 中国环境科学] |
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Keywords: | catalytic oxidation Ru-Ce/Al2O3 ozonation doped cerium ozone |
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