Highly active nickel molybdate catalysts prepared for deep hydrodesulfurization of dibenzothiophene

摘要

Recently the new changes in clean fuels requirements have increased the research work for reducing sulfur in petroleum products. The sulfur content in the motor fuels is continuously reduced by regulations to lower and lower levels. In the near future, highway diesel will truly be ultra-low sulfur diesel (ULSD).Thus, refiners must process diesel with sulfur content in the range of 5-10ppm. Some significant breakthroughs in catalyst developments for low-sulfur diesel have been accomplished (1-3). The new catalysts systems are specifically designed to overcome the steric hindrance in the hydrodesulfurization reactions of substituted DBTs at low content levels.