Li, Lixia published the artcileSelective aerobic oxidative cleavage of lignin C-C bonds over novel hierarchical Ce-Cu/MFI nanosheets, Recommanded Product: Ethyl 4-oxopentanoate, the main research area is zeolite MFI supported cerium copper catalyst preparation property; oxidative bond cleavage depolymerization lignin aromatic compound.
The catalytic depolymerization process for lignin to produce value added chems. is often challenged by the limited mass transfer over heterogeneous catalysts, the complex aromatic biopolymer structures, and the high recalcitrance of C-C bonds. Herein, a series of hierarchical MFI nanosheets (MFI-ns) supported metal oxide catalysts have been designed and used for the selectively oxidative cleavage of organosolv lignin. As expected, 81.6% conversion of lignin can be achieved over 15Ce-5Cu/MFI-ns with 294.0 mg g-1 yield of volatile products, including 180.9 mg g-1 of di-Et maleate. Quantum chem. calculation coupled with static adsorption measurements shows that the superior catalytic activities of these catalysts are ascribed to the favorable mass transport of lignin to the active sites by the unique layer structure, and the hierarchical pore sizes distribution, as well as the electronic effect between Cu and Ce components. In addition, the catalytic mechanism for the cleavage of C-C bonds in β-O-4 model probes has been studied via the controlled oxidative degree of model compounds and the isotope-labeling experiments Therefore, this work provides a new insight into the efficient utilization of lignin via the rational design of catalysts.
Applied Catalysis, B: Environmental published new progress about Aromatic compounds Role: SPN (Synthetic Preparation), PREP (Preparation). 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Recommanded Product: Ethyl 4-oxopentanoate.
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