About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
4th World Congress on High Entropy Alloys (HEA 2026)
|
| Presentation Title |
High-Entropy Oxide Catalysts for the Reductive Depolymerization of Organosolv Iignin |
| Author(s) |
Param Naik, An Verberckmoes , Jeroen Lauwaert, Jeriffa De Clercq |
| On-Site Speaker (Planned) |
Param Naik |
| Abstract Scope |
Reductive catalytic depolymerization of lignin yields phenylalkane monomers that can be used as building blocks for the polymer industry. In literature, widely employed precious monometallic catalysts suffer from selectivity loss due to excessive ring saturation (with loss of desirable phenolic -OH groups) and substantial deactivation by poisoning and coking. In this work, high-entropy oxide catalysts (noble and completely non-noble formulation each) were synthesized and tested for the first time on the reductive depolymerization of organosolv lignin in batch. Their activity was measured by GPC-RID as a function of reducing molecular weight (Mw) of lignin, and compared to a benchmark Pd/Al2O3. The benchmark catalyst led to a catalytic activity (Mw reduction) of 40.16 ± 1.41%, whereas noble catalyst (PdCuNiCoCr)Ox outperformed with 57.63 ± 4.41%. HSQC NMR and GC-MS analyses were undertaken to analyze the resultant product pool. Furthermore, H2-TPR, XRD, XPS, SEM-EDX characterizations revealed structural and electronic information about the catalysts. |
| Proceedings Inclusion? |
Undecided |