101. Characterization of HDS activity of mechanical comminuted MoS_2 fine particle

Abstract

Sulfur reduction from diesel-fuel is a current key technology to prevent air-pollution. With a view to improving the hydrodesulfidation (HDS) process, we examined the HDS activity of comminuted MoS_2 fine particles by autoclave test. The comminuted MoS_2 fine particles catalyzed more HDS of 4,6-dimethyldibenzothiophene (4,6-DMDBT) than that of dibenzothiophene (DBT). This is a inverse result in comparison with the conventional HDS catalyst, CoMo/γ-Al_2O_3, indicating that a bubble column reactor system with the MoS_2 fine particle is a plausible for a HDS process satisfying the future strict regulation value of the sulfur content. The HDS activity was much higher for the particles by dry comminution than for those by wet comminution.