Deep Hydrodesulfurization of Alkyl-Substituted Dibenzothiophenes in Light Oil

Abstract
Hydrodesulfurization of polyaromatic sulfur-containing compounds in light oil was carried out by using Co-Mo/Al2O3 under experimental conditions representative of industrial practice. Alkyl-substituted dibenzothiophenes in light oil, especially 4,6-dimethyldibenzothiophene, were difficult to desulfurize even under deep desulfurization conditions.