MOFs (Metal-organic frameworks) are special compounds that can be an interesting alternative for heterogeneous catalysis, due their singularities like a porous and crystalline structure with high specific area. This work proposes an environmentally favorable production route of Co-MOF-71 derived material, starting with the depolymerization of PET from plastic waste to obtain terephthalic acid, which is the source of ligand BDC (1,4-benzenodicarboxylate). The synthesis of Co-MOF-71 was performed by solvothermal method and, optimizing the research, Box-Behnken design were developed with three independent variables: amount of terephthalic acid, cobalt content, and temperature. The samples were characterized by XRD, TGA, and SEM analysis before and after calcination at 500 degrees C. Finally, the specific surface area was measured by N2 adsorption-desorption, and a second-order polynomial model was suggested, with its respective analysis of variance (ANOVA), indicating that temperature has no significant influence in the applied range. Then, the model was updated, reaching the coefficient of determination (R2 ) of 87.39 percent and presenting the terephthalic acid content as the most relevant effect. Additionally, the response surface confirmed the scenario of higher surface area with excess BDC in the system, consistent with the best experimental result (82 m2 / g).