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

来源：

ENERGY & FUELS | 2023年 / 37卷 / 05期

基金：

中国国家自然科学基金;

关键词：

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.

引用

页码：3825 / 3835

页数：11