caa a22 4500 606169008 CHVBK 20210128100710.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10098-014-0873-x doi (NATIONALLICENCE)springer-10.1007/s10098-014-0873-x Catalytic oxidative desulfurization of diesel oil by Co/Mn/Al2O3 catalysts— tert -butyl hydroperoxide (TBHP) system: preparation, characterization, reaction, and mechanism [Elektronische Daten] [Wan Wan Mokhtar, Wan Wan Abu Bakar, Rusmidah Ali, Abdul Abdul Kadir] The hydrodesulfurization (HDS) technique available is no longer suitable for the purpose of achieving ultra-low sulfur diesel. Therefore, in this study, the catalytic oxidative desulfurization of model diesel was carried out using tert-butyl hydroperoxide along with inexpensive alumina-supported manganese-based oxide catalysts, and later, the oxidized sulfur compounds were extracted by dimethylformamide, a polar solvent. The effect of dopant ratio, calcination temperature, reaction time, and reaction temperature were investigated in detail. The oxidation reactivity of different substrates was in the following order: DBT>Th>4,6-DMDBT. The best desulfurization efficiency of model diesel, under mild reaction conditions, was 85.3% thiophene, 85.0% dibenzothiophene, and 74.5% 4,6-dimethyldibenzothiophene using the 2.14%Co/13.17%Mn/Al2O3 catalyst calcined at 400°C. Besides, this catalyst retained a high conversion of sulfur after three rounds of reaction cycles and can be used as a reusable active catalyst in ODS treatment. Under the optimal conditions, the S-content in the commercial diesel could be decreased from 415 to less than 10ppmw. The oxidation mechanism was studied in detail, and TBHP-Co/Mn catalyst was the main active oxidizing species on the oxidation of DBT. Springer-Verlag Berlin Heidelberg, 2014 Oxidative desulfurization nationallicence Manganese-based oxide catalysts nationallicence Co/Mn/Al2O3 nationallicence Model diesel nationallicence Mechanism activity nationallicence Wan Mokhtar Wan Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut Wan Abu Bakar Wan Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut Ali Rusmidah Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut Abdul Kadir Abdul Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/6(2015-08-01), 1487-1497 1618-954X 17:6<1487 2015 17 10098 https://doi.org/10.1007/s10098-014-0873-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-014-0873-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wan Mokhtar Wan Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Wan Abu Bakar Wan Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Ali Rusmidah Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut NATIONALLICENCE 700 1- Abdul Kadir Abdul Department of Chemistry, Faculty of Science and Department of Petroleum Engineering, Faculty of Petroleum and Renewable Energy, Universiti Teknologi Malaysia, 81310, Utm Skudai, Johor, Malaysia aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/6(2015-08-01), 1487-1497 1618-954X 17:6<1487 2015 17 10098