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Selective catalytic degradation of a lignin model compound into phenol over transition metal sulfates.

ABSTRACT: Transition metal salts were employed as the catalysts to improve the selective degradation of the α-O-4 lignin model compound (benzyl phenyl ether (BPE)) in the solvothermal system. The results concluded that most of the transition metal salts could enhance BPE degradation. Among which, NiSO₄·6H₂O exhibited the highest performance on BPE degradation (90.8%) for 5 h and phenol selectivity (53%) for 4 h at 200 °C. In addition, the GC-MS analysis indicated that the intermediates during BPE degradation included a series of aromatic compounds, such as phenol, benzyl methyl ether and benzyl alcohol. Furthermore, the mechanisms for BPE degradation and phenol selectivity in the NiSO₄·6H₂O system involved the synergetic effects between the acid catalysis and coordination catalysis, which caused the effective and selective cleavage of the C-O bonds.

SUBMITTER: Wu MY

PROVIDER: S-EPMC9048635 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Selective catalytic degradation of a lignin model compound into phenol over transition metal sulfates.

Wu Min-Ya MY Lin Jian-Tao JT Xu Zhuang-Qin ZQ Hua Tian-Ci TC Lv Yuan-Cai YC Liu Yi-Fan YF Pei Rui-Han RH Wu Qiong Q Liu Ming-Hua MH

RSC advances 20200116 5

Transition metal salts were employed as the catalysts to improve the selective degradation of the α-O-4 lignin model compound (benzyl phenyl ether (BPE)) in the solvothermal system. The results concluded that most of the transition metal salts could enhance BPE degradation. Among which, NiSO<sub>4</sub>·6H<sub>2</sub>O exhibited the highest performance on BPE degradation (90.8%) for 5 h and phenol selectivity (53%) for 4 h at 200 °C. In addition, the GC-MS analysis indicated that the intermediat ...[more]

PMID: 35496085

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