Catalytic Pathways and Deacivation in Alternative Sources of Fuel Production: Butene Oligomerization and Ship-/Shale- Gasoils Cracking Doktoregaia: Sepideh Izaddoust Urtea: 2023 Unibertsitatea: UPV/EHU Zuzendaria(k): E. Epelde, P. Castaño