2014年诺贝尔物理学奖得主Hiroshi Amano和Isamu Akasaki论著。

摘要：The oxidation of undesirable sulfur compounds present in a desulfurized light gas oil (LGO; sulfur content: 39 ppm) was performed with tert-butyl hydroperoxide (t-BuOOH) as the oxidant in the presence of a 16 wt.% MoO3/Al2O3 catalyst. The oxidation activity of the sulfur compounds in the light gas oil increased when the O/S molar ratio increased up to 15; the activity slightly decreased for higher ratios. This optimal ratio was significantly higher that the stoichiometric one (=2) due to parallel oxidation reactions of olefins, etc., in the LGO. Further, we compared the oxidation reactivity of dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT), and trimethyldibenzothiophene (C3-DBT), which are refractory compounds present in the light gas oil. The reactivity decreased in the order DBT  4,6-DMDBT > C3-DBT, irrespective of the WHSV and the temperature. Subsequent mathematical treatment revealed that the oxidative reaction of each sulfur compound follows a first-order kinetics.