Solvothermal liquefaction of waste polyurethane using supercritical toluene in presence of noble metal catalysts

Solvothermal liquefaction (STL) is a thermochemical conversion method that uses sub‐or supercritical solvents to convert waste plastics like waste polyurethane (PU) into value‐added chemicals. This study aimed to evaluate catalytic STL utilizing toluene as a solvent for depolymerization of waste PU...

Full description

Saved in:
Bibliographic Details
Published in:AIChE journal 2022-12, Vol.68 (12), p.n/a
Main Authors: Ghalandari, Vahab, Banivaheb, Soudeh, Peterson, Jessica, Smith, Hunter, Reza, M. Toufiq
Format: Article
Language:English
Subjects:
Aniline
Catalysts
Conversion
Depolymerization
Liquefaction
noble metal catalysts
Noble metals
Palladium
Plastic debris
Platinum
Polyurethane
Polyurethane resins
reaction mechanism
Ruthenium
Solvents
supercritical fluids
Toluene
waste plastics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Solvothermal liquefaction (STL) is a thermochemical conversion method that uses sub‐or supercritical solvents to convert waste plastics like waste polyurethane (PU) into value‐added chemicals. This study aimed to evaluate catalytic STL utilizing toluene as a solvent for depolymerization of waste PU into valuable products. The effect of catalyst type (Pt/C, Pd/C, and Ru/C), catalyst loading (0–10 wt%), STL reaction temperature (330°C, 350°C, and 370°C), STL residence time (1, 3, and 5 h), and hydrogen loading (25, 50, and 75 bar) on STL conversion were studied. Results showed that Ru/C outperformed Pt/C and Pd/C and the STL conversion reached to as high as 87.2%. The concentrations of nitrogen‐containing components like aniline and p‐aminotoluene were increased with the increase of Ru/C loading and STL reaction temperature.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.17863