Highly Active Nonpromoted Hydrotreating Catalysts through the Controlled Growth of a Supported Hexagonal WS2 Phase. Alphazan, T.; Bonduelle-Skrzypczak, A.; Legens, C.; Gay, A.-S.; Boudene, Z.; Girleanu, M.; Ersen, O.; Copéret, C.; Raybaud, P. ACS Catal. 2014, 4 (12), 4320-4331.