The catalytic oxidation of olefins is a significant pathway for producing epoxides, essential building blocks used to fabricate pharmaceuticals, epoxy resins, paints, fragrances, and other industrial products. Achieving high selectivity, efficiency, and catalyst stability remains challenging in developing more efficient and sustainable chemical processes for these reactions. Metal-organic frameworks (MOFs) appear as potential heterogeneous catalysts due to their singular properties and the simplicity in synthesis, modification, and tailoring, which allows the use of different metals and organic ligands. In this study, gallium and terephthalic acid were used to synthesized a Ga-MIL-53 type MOF through the solvothermal method, using milder conditions compared to the current procedure. The material was characterized using various techniques, including X-ray diffraction, scanning electron microscopy, infrared spectroscopy, surface area analysis, and elemental analysis. The Ga-MIL-53 type MOF was evaluated as a catalyst for the epoxidation of cis-cyclooctene with aqueous H2O2 60%, using a metal-ligand cooperative approach in the presence of 1-methylimidazole. The heterogeneity of the catalyst was confirmed through a hot filtration test, and its selectivity and productivity were assessed over two consecutive cycles. Reaction kinetics showed that Ga-MIL-53 produced 2.4 mmol of the corresponding epoxide, with a conversion rate of 93%, and epoxide selectivity of 71%.