Catalyst for preparing ethanol through carbon dioxide hydrogenation and performing in-situ alcoholysis on waste PET (Polyethylene Terephthalate)

The invention discloses a catalyst for preparing ethanol through CO2 hydrogenation and performing in-situ alcoholysis on waste polyethylene glycol terephthalate (PET) and an application method of the catalyst. The preparation method comprises the following steps: preparing ZIF-67, loading Cu on the ZIF-67, and sequentially carrying out heat treatment in N2 and NH3 atmospheres to finally obtain the catalyst. The catalyst can be used for catalyzing CO2 hydrogenation to prepare ethanol and performing in-situ alcoholysis on waste PET (polyethylene terephthalate) to prepare p-xylene (PX, the yield is 92%). The method not only can directly catalyze CO2 hydrogenation to prepare ethanol and realize resource utilization of CO2, but also can efficiently degrade waste PET and prepare high-added-value products at a lower temperature, so that the related problems of waste plastic pollution and CO2 carbon emission can be solved at the same time, and the method has certain reference significance for resource utilization of