Selective conversion of polystyrene into renewable chemical feedstock under mild conditions
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Engineering Program
Chemical Science Program
Homogeneous Catalysis Laboratory (HCL)
KAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Online Publication Date2018-07-07
Print Publication Date2018-08
Permanent link to this recordhttp://hdl.handle.net/10754/630420
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AbstractThe aim of this work is to prepare catalysts for energy efficient conversion of polystyrene (PS) and its waste into valuable products with high conversion at 250 °C. The FeCo/Alumina bimetallic catalyst was synthesized by aqueous impregnation and structurally determined using scanning-transmission electron microscopy, temperature programmed desorption, X-ray diffraction, and X-ray photoelectron spectroscopy. Successfully, we have achieved up to 91% liquid yield with selectivities for styrene monomer (SM) up to 45 wt% and ethylbenzene (EB) up to 55 wt%, depending on the exposure time at 250 °C by FeCo/Alumina which is comparable to those of reactions at high temperatures (≥350 °C). Further increase of catalyst loadings from 200 to 400 mg also led to the decrease in styrene yield and increase in ethylbenzene yield. The analysis of the resulting clear liquid by gas chromatography/mass spectrometry (GC/MS) indicates the generation of products in the gasoline range.
CitationAljabri NM, Lai Z, Huang K-W (2018) Selective conversion of polystyrene into renewable chemical feedstock under mild conditions. Waste Management 78: 871–879. Available: http://dx.doi.org/10.1016/j.wasman.2018.07.005.
SponsorsWe are grateful for the generous support from King Abdullah University of Science and Technology (KAUST).