| Title |
H2-free Plastic Conversion: Converting PET back to BTX by Unlocking Hidden Hydrogen |
| ID_Doc |
26141 |
| Authors |
Lu, SL; Jing, YX; Feng, B; Guo, Y; Liu, XH; Wang, YQ |
| Title |
H2-free Plastic Conversion: Converting PET back to BTX by Unlocking Hidden Hydrogen |
| Year |
2021 |
| Published |
Chemsuschem, 14, 19 |
| DOI |
10.1002/cssc.202100196 |
| Abstract |
The strong desire for a circular economy makes obtaining fuels and chemicals via plastic degradation an important research topic in the 21st century. Here, the first example of the H-2-free polyethylene terephthalate (PET) conversion to BTX (benzene, toluene and xylene) was achieved by unlocking hidden hydrogen in the ethylene glycol part over Ru/Nb2O5 catalyst. Among the whole process (hydrolysis, reforming and hydrogenolysis/decarboxylation), the parallel hydrogenolysis and decarboxylation were competing and the rate-determining step. Ru/Nb2O5 exhibited superior hydrogenolysis and poorer decarboxylation performance in direct comparison with Ru/NiAl2O4, accordingly contributing to the distinct selectivity to alkyl aromatics among BTX. Ru species on Nb2O5, unlike those on NiAl2O4, showed more Ru delta+ species owing to the strong interaction between Ru and Nb2O5, restricting the undesired decarboxylation. Along with NbOx species for C-O bond activation, excellent reactivity towards the H-2-free conversion of PET back to BTX with alkyl aromatics as dominant species was achieved. This H-2-free system was also capable of converting common real PET plastics back to BTX, adding new options in the circular economy of PET. |
| Author Keywords |
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| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000627857700001 |
| WoS Category |
Chemistry, Multidisciplinary; Green & Sustainable Science & Technology |
| Research Area |
Chemistry; Science & Technology - Other Topics |
| PDF |
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