Fig. 2: Catalytic performance and possible reaction pathway in hydrogenolysis of PET to PX. | Nature Communications

Fig. 2: Catalytic performance and possible reaction pathway in hydrogenolysis of PET to PX.

From: Stepwise hydrogen spillover–engineered synergistic sites enable near-quantitative conversion of waste PET to p-xylene

Fig. 2: Catalytic performance and possible reaction pathway in hydrogenolysis of PET to PX.

a Catalytic performance of Co or Cu-based catalysts, Reaction conditions: 0.1 g catalyst, 0.1 g PET, 10 mL of 1,4-dioxane, 600 rpm, 230 °C, 2 MPa H2, 10 h; Effect of H2 pressure and temperature. b The stability of CuCo/CoOx. Reaction conditions: 0.1 g catalyst, 0.1 g PET, 10 mL 1,4-dioxane, 600 rpm, 230 °C, 2 MPa H2, 10 h. c 1H NMR spectra of the products in 1,4-dioxane and the pure 1,4-dioxane after reaction. a Products in 1,4-dioxane with higher purity (GC grade, 99.9%). d TGA curve of CuCo/CoOx after reaction. e GC spectra of reaction results. f Possible reaction pathway for the conversion of PET to PX over CuCo/CoOx. Reaction conditions: 0.1 g catalyst, 0.1 g substrate, 10 mL 1,4-dioxane, 600 rpm, 230 °C, 2 MPa H2, 2 h. PX refers to p-xylene.

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