期刊
GREEN CHEMISTRY
卷 18, 期 3, 页码 771-781出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5gc01653c
关键词
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资金
- National Basic Research Foundation of China [2013CB733600]
- National Natural Science Foundation of China [91334201, 21036002, 21276140]
Aimed at ultra-deep oxidative desulfurization (ODS) of dibenzothiophene (DBT) and 4,6-dimethyl-dibenzothiophene (4,6-DMDBT) to control air pollution, we specially designed and prepared porous glass supported with TiO2 nanoparticles acting as an amphiphilic catalyst. Hydrogen peroxide which is considered as the green oxidant was used, and for the extreme liquid-liquid phase ratio (usually larger than 1500) reaction system, a pore volume of 0.19 mL g(-1) of the catalyst provides enough space for the storage of hydrogen peroxide. The as-prepared catalyst offers a high interfacial surface area of 116.9 m(2) g(-1) and enhances the reaction by facilitating the mass transfer. The mono-dispersed TiO2 exhibited good crystallinity. The mean diameter varied from 2.1 to 7.8 nm with the loading amount increasing from 1.27 wt% to 9.85 wt%. The catalyst showed high activity and good stability for producing ultra-clean fuels: 100% conversion was obtained within 2 min and the conversion just decreased from 100.0 +/- 1.0% to 94.3 +/- 0.6% after 5 cycles. Overall, this new reusable catalyst provided an alternative for highly efficient ultra-deep desulfurization in a green way.
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