Prompt Description

Metal-organic frameworks (MOFs) based on the Zr₆-cluster UiO-66 are a versatile platform for deep desulfurization of liquid fuels via adsorption and oxidation. This review critically examines experimental, kinetic, and theoretical studies on UiO-66-type materials for removing thiophenic organosulfur compounds (thiophene, BT, DBT, and alkyl-DBTs) from model gasolines/diesels and real fuels. We first outline the intrinsic oxidative activity of pristine and defect-engineered UiO-66, highlighting the role of missing-linker defects and activation protocols in creating Lewis-acidic Zr sites that form peroxo intermediates with H₂O₂. We then examine linker-functionalized (e.g., –NH₂, –NO₂, –OH) and heterometal-doped (Ti, Hf, Ce, rare-earth) derivatives that tune node electronics, hydrophilicity, and mass transport, enabling faster and often lower-temperature operation. A major focus...