fig1
![Towards improvement of hydroprocessing catalysts - understanding the role of advanced mineral materials in hydroprocessing catalysts](https://image.oaes.cc/c7f81204-eefa-4946-92a1-bdbd15c95a69/mmm2023.fig.1.jpg)
Figure 1. Schematics showing (A) HDS and (B) HDN reactions of typical sulfur and nitrogen containing compounds as representative hydroprocessing reactions. DDS: Direct desulfurization; HDN: hydrodenitrogenation; HDS: hydrodesulfurization; HYD: hydrogenation.