2024 AIChE Annual Meeting
(569fl) Direct Hydrogenolysis of Post-Consumer PET into BTX Using Platinum-Supported Catalyst
Authors
In the present study, a highly active and selective catalyst is developed with platinum-supported alumina for the direct hydrogenolysis of waste PET into BTX, with a particular focus on enhancing the production of para-xylene, performed in the absence of solvent. The catalytic performances are evaluated in a semi-batch reaction system at elevated hydrogen pressure up to 85 MPa and temperature reaching 290℃ for 12 h. The complete conversion of PET and 77% yield of BTX are achieved with a modest 10 wt.% catalyst loading, and the BTX yield is further enhanced up to 99% with 30 wt.% catalyst loading. To study the role of the platinum, promoter, and support, various characterization techniques such as XRD, TEM, H2-TPR, XANES, and EXAFS are investigated. The reactions are also conducted in various conditions to gain further insight into the reaction pathways for the direct hydrogenolysis over the platinum-supported catalyst.