Oxidative desulfurization of model diesel fuel catalyzed by carbon-supported heteropoly acids
Autor: | Reem Ghubayra, Charlotte Nuttall, Sophie E. Hodgkiss, Elena F. Kozhevnikova, Ivan V. Kozhevnikov, Michael Craven |
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Rok vydání: | 2019 |
Předmět: |
Heptane
Aqueous solution Process Chemistry and Technology chemistry.chemical_element 02 engineering and technology Oxidative phosphorylation 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Flue-gas desulfurization chemistry.chemical_compound Diesel fuel chemistry medicine 0210 nano-technology Carbon General Environmental Science Nuclear chemistry Activated carbon medicine.drug |
Zdroj: | Applied Catalysis B: Environmental |
ISSN: | 0926-3373 |
Popis: | Keggin-type heteropoly acids supported on activated carbon (HPA/C) are active catalysts for oxidative desulfurization (ODS) of diesel fuel under mild conditions in a biphasic system composed of a benzothiophene-containing model diesel fuel (heptane) and aqueous 30% H2O2. The catalytic activity of HPA/C was found to decrease in the order of HPA: H3PMo12O40 > H3PW12O40 > H4SiW12O40. The most active catalyst, H3PMo12O40/C, exhibited 100% removal of benzothiophenes from model diesel fuel at 60 °C, and could be recovered and reused without loss of activity. This catalyst outperforms other recently reported heterogeneous catalysts for ODS in similar systems. Kinetic and DRIFTS studies provide new insights into the mechanism of ODS reaction on carbon-supported HPAs. |
Databáze: | OpenAIRE |
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