| 초록 |
Oxidative desulfurization (ODS), combined with a simultaneous extraction process, is considered to be one of the most promising desulfurization processes. Here, we synthesized various kinds of mesoporous transition metal oxides and applied them to the ODS reaction of a model oil with H2O2 as the oxidant at 50 oC. The ODS reactions were optimized by various kinds of reaction parameters such as H2O2/S molar ratio, reaction temperatures and series of sulfur-containing compounds. Excellent catalytic activity for the removal of the sulfur-containing compounds from the model oil was observed with mesoporous tungsten trioxide (WO3) catalyst, where the activity was maintained during 5 recycle tests without any regeneration process. The high catalytic activity and durability is mainly attributed to well-defined mesopores and high surface area of mesoporous WO3 catalyst. Composite mesoporous catalysts containing WO3 active sites were also investigated. |
