The reduction of the sulfur content in gasoline and diesel fuel has been a subject of intense investigation in recent years because the sulfur level must in many countries be reduced to 10 ppm by the year 2010 for environmental reasons, while for fuel-cell applications the sulfur content should be below 0.1 ppm.[1] To reach this low level, even highly refractory molecules such as 4, 6-dimethyldibenzothiophene (4, 6-DMDBT) must be desulfurized. ...
