The invention relates to the production of heterogeneous catalysts of mixed oxides based on niobium and mixed oxides of zinc, manganese, nickel, cobalt and/or aluminum, from hydrotalcites (HTs), as the precursor phase of heterogeneous catalysts, and to the application thereof in the chemical recycling of poly(ethylene terephthalate) (PET) for the production of metal-free bis(hydroxy)ethylene (BHET) monomers and oligomers with a process performance similar to that of the system in homogeneous catalysis.

» Number: WO2020051665A1 (A1)

» Publication Date: 19/03/2020

» Applicant: PETROLEO BRASILEIRO SA PETROBRAS?[BR]; UNIV FEDERAL DO RIO DE JANEIRO UFRJ?[BR] (1)

» Inventor: DE OLIVEIRA DA SILVA WELLINGTON?[BR]; HALLEN LIMA STEVIE?[BR] (8)

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