Efficient Hydrodeoxygenation of Lignin-Derived Phenols to C6+Cycloalkanols/Cycloalkanes over Magnetic Carbon-Encapsulated Nickel Nanospheres

被引:3
|
作者
Zhu, Yingbo [1 ]
Ma, Nan [1 ]
Ma, Yulong [1 ]
Sun, Yonggang [1 ]
Wang, Liqiong [1 ]
Li, Yuanyuan [1 ]
Gao, Tingting [1 ]
Lin, Feng [1 ]
机构
[1] Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Ningxia, Peoples R China
基金
中国国家自然科学基金;
关键词
Compilation and indexing terms; Copyright 2025 Elsevier Inc;
D O I
10.1021/acs.energyfuels.2c04221
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
To obtain value-added fuels and chemicals from lignin, it is necessary to explore an efficient catalytic system for hydrodeoxygenation (HDO). In this study, a highly efficient and magnetically separable Ni@C catalyst was synthesized for conversion of lignin-derived phenols. Detailed results showed that the pyrolysis temperature played a crucial role in the difference of the carbon-defect degree, which increased the metal dispersion and the strong electronic metal-support interactions. Meanwhile, we revealed that the differentiated pyrolysis temper-ature induced the appropriate presence of Ni2+ as Lewis acid sites and Ni delta+ as heterohydrogen cleavage sites, which provided an acceleration effect for the HDO reaction. The results displayed that higher reactivity of lignin-derived phenols into C6+ cyclo-alkanols was achieved over the Ni@C catalyst (100% conversion and 87.19% selectivity). Moreover, the high selectivity of C6+ cycloalkanes was achieved after adding H-ZSM-5 as Bronsted acid sites (100% conversion and 100% selectivity). This investigated work offers an efficient strategy for conversion of lignin-derived aromatics into value-added chemicals.
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页码:3825 / 3835
页数:11
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