Polyethylene upcycling to long-chain alkylaromatics by tandem hydrogenolysis/aromatization
Creators
- 1. University of California, Santa Barbara
- 2. University of Illinois at Urbana Champaign
- 3. Cornell University
Description
The current scale of plastics production and the accompanying waste disposal problems represent a largely untapped opportunity for chemical upcycling. Tandem catalytic conversion by Pt/g-Al2O3 converts various polyethylene grades in high yields (up to 80 wt%) to low molecular-weight liquid/wax products, in the absence of added solvent or H2, with little production of light gases. The major components are valuable long-chain alkylaromatics and alkylnaphthenes (average ca. C30, Ð = 1.1). Coupling exothermic hydrogenolysis with endothermic aromatization renders the overall transformation thermodynamically accessible despite the moderate reaction temperature of 280 °C. This approach demonstrates how waste polyolefins can be a viable feedstock for the generation of molecular hydrocarbon products.
Notes
Note for "Regression analysis for Figure 5b.nb"
A working copy and basic understanding of Mathematica 12.0 is required to run this file. The file is commented with explanations of the functions used. The derivation of the function used for the model fit is presented in the supporting information (eq. S10-S35). Only the data from Table S3 is used for model fitting, and the necessary portions of Table S3 are reproduced in this file.
Funding provided by: U.S. Department of Energy
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000015
Award Number: DE-AC-02-07CH11358
Files
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