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过渡金属硫酸盐催化木质素模型化合物选择性降解为苯酚

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

作者信息

Wu Min-Ya, Lin Jian-Tao, Xu Zhuang-Qin, Hua Tian-Ci, Lv Yuan-Cai, Liu Yi-Fan, Pei Rui-Han, Wu Qiong, Liu Ming-Hua

机构信息

Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Resources, Fuzhou University No. 2 Xueyuan Road, Shangjie Town, Minhou County Fuzhou Fujian 350116 China

出版信息

RSC Adv. 2020 Jan 16;10(5):3013-3019. doi: 10.1039/c9ra09706f. eCollection 2020 Jan 14.

DOI:10.1039/c9ra09706f
PMID:35496085
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9048635/
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, NiSO·6HO 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 NiSO·6HO system involved the synergetic effects between the acid catalysis and coordination catalysis, which caused the effective and selective cleavage of the C-O bonds.

摘要

过渡金属盐被用作催化剂，以改善溶剂热体系中α-O-4木质素模型化合物（苄基苯基醚（BPE））的选择性降解。结果表明，大多数过渡金属盐都能促进BPE的降解。其中，NiSO₄·6H₂O在200℃下对BPE降解5小时表现出最高性能（90.8%），对苯酚选择性4小时表现出最高性能（53%）。此外，GC-MS分析表明，BPE降解过程中的中间体包括一系列芳香族化合物，如苯酚、苄基甲基醚和苄醇。此外，NiSO₄·6H₂O体系中BPE降解和苯酚选择性的机制涉及酸催化和配位催化之间的协同效应，这导致了C-O键的有效和选择性断裂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/73d6926a7a03/c9ra09706f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/21e19aa96931/c9ra09706f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/8d8b1b691b40/c9ra09706f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/01292954c6cf/c9ra09706f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/2fc581b9148d/c9ra09706f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/c4c652623962/c9ra09706f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/73d6926a7a03/c9ra09706f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/21e19aa96931/c9ra09706f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/8d8b1b691b40/c9ra09706f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/01292954c6cf/c9ra09706f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/2fc581b9148d/c9ra09706f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/c4c652623962/c9ra09706f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a790/9048635/73d6926a7a03/c9ra09706f-f6.jpg

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