"Pétrole Désulfuration." . . "Craquage catalytique." . . "Hydrodesulfurierung." . . "Hydrodesulfurierung" . "Dénitrification." . . "Denitrification." . . . . . . . . . . . . . . . "Hydrodesulfurization and hydrodenitrogenation : chemistry and engineering" . "Hydrodesulfurization and hydrodenitrogenation : chemistry and engineering"@en . . . . . . . . . . . . . . . . . "Hydrodesulfurization and hydrodenitrogenation chemistry and engineering"@en . "Hydrodenitrogenierung." . . "Hydrodenitrogenierung" . "Catalyseurs d'hydrotraitement." . . "Catalytic cracking." . . . . "Hydrotraitement." . . "Petroleum Refining Desulfurization." . . "Hydrotreating catalysts." . .