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- E-ISSN 2288-8985
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Effect of promoter on platinu, catalyst for oxidation of VOCs
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.5, pp.422-432
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(2006). Effect of promoter on platinu, catalyst for oxidation of VOCs. Analytical Science and Technology, 19(5), 422-432.
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Abstract
The volatile organic compounds(VOCs) have been recognized as a major contributor to air pollution. The catalytic oxidation is one of the most important processes for VOCs destruction due to getting high efficiency at low temperature. In this study, monometallic Pt and bimetallic Pt-Ru, Pt-Ir were supported to <TEX>${\gamma}-Al_2O_3$</TEX>. Xylene, toluene and MEK were used as reactants. The monometallic or bimetallic catalysts were prepared by the excess wetness impregnation method and were characterized by XRD, XPS, TEM and BET analysis. As a result, Pt-Ru, Pt-Ir bimetallic catalysts showed higher conversion than Pt monometallic catalyst. Pt-Ir bimetallic catalyst showed the highest conversion on the <TEX>${\gamma}-Al_2O_3$</TEX> support. In the VOCs oxidation, Pt-Ru, Pt-Ir bimetallic catalyst had multipoint active sites, so it improved the range of Pt metal state. Therefore, bimetallic catalysts showed higher conversion of VOCs than monometallic ones. In this study, the use of small amount of Ru, Ir to Pt promoted oxidation conversion of VOCs.
- keywords
- volatile organic compounds(VOCs), bimetallic catalysts, promoter, oxidation characterization, noble metal catalyst
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