10.1002/cssc.202100956
ChemSusChem
FULL PAPER
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were selected as representative chemicals in each product groups to
generate calibration curve from GC-MS. Xylene calibration curve was used
to calculate the amounts of product without oxygen atom (ring-
hydrogenated products and arenes). While, the calibration data of benzoic
acid, dimethylterephthalate, and benzylbutyl phthalate were applied to
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alkylbenzoates, alkylterephthalic acids or alkylterephthalates, and
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To investigate the catalyst recyclability, the Co/TiO2 catalyst
obtained from the HDO of PET under 30 bar initial H2 pressure at 320 °C
for 24 h was directly recycled to conduct the HDO of PET under the same
reaction condition. To investigate whether the catalyst could be readily
regenerated, the spent Co/TiO2 catalyst obtained from HDO of PET was
treated by calcination and reduction under H2 atmosphere again by using
the method for preparation of the fresh Co/TiO2 catalyst before conducting
a second batch HDO reaction.
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The authors gratefully acknowledge the financial support from
NUS Flagship Green Energy Program (R-279-000-553-646, and
R-279-000-553-731) and Thailand Research Fund and National
Research Council of Thailand for providing a Royal Golden
Jubilee Ph.D. Program (Grant No. PHD/0014/2561).
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Keywords: Hydrodeoxygenation • Polyethylene terephthalate •
Terephthalic acid • Cobalt • Titanium dioxide
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