Investigation on the Catalytic Hydrogenolysis of Lignin over NbOx-Ni/ZnOAl2O3

被引：19

作者：

Wang, Yuyang ^{[1
,2
]}

Wang, Da ^{[1
]}

Li, Xiaoyu ^{[1
]}

Li, Guangci ^{[1
]}

Wang, Zhong ^{[1
]}

Li, Mingshi ^{[2
]}

Li, Xuebing ^{[1
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Shandong, Peoples R China

[2] Changzhou Univ, Jiangsu Key Lab Adv Catalyt Mat & Technol, Adv Catalysis & Green Mfg Collaborat Innovat Ctr, Changzhou 213164, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2019年 / 58卷 / 19期

基金：

中国国家自然科学基金;

关键词：

MODEL COMPOUNDS; DEPOLYMERIZATION; HYDRODEOXYGENATION; HYDROGENATION; OXIDATION; EFFICIENT; GUAIACOL; ETHANOL; RU;

D O I：

10.1021/acs.iecr.9b00376

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The catalytic hydrogenolysis of lignin was an important route to depolymerize lignin into aromatic monomer products and other high added value chemicals. Herein, the catalytic hydrogenolysis of poplar lignin was carefully studied in the presence of Nb-m-Ni-n/ZnO-Al2O3 catalysts in methanol solvent. The physicochemical properties of Nb-m-Ni-n/ZnO-Al2O3 catalysts were characterized by N-2 adsorption-desorption, X-ray diffraction, H-2-temperature programmed reduction, transmission electron microscopy, high-angle annular dark-field imaging-scanning transmission electron microscopy, and X-ray photon spectroscopy techniques. The structural properties of the raw lignin, oligomers, and monomers were detected by 2D heteronuclear single-quantum coherence NMR, gas chromatography-mass spectroscopy, and gel permeation chromatography. The Nb-2-Ni-1/ZnO-Al2O3 (Nb/Ni ratio was 2:1) showed the most attractive lignin depolymerization performance, with an 87.1 wt % bio-oil yield and 22.4 wt % phenolic monomer yield. 2-(2-Methoxyphenoxy)-1-(4-methoxyphenyl)ethanone was employed as model compound to deeply study the mechanism of NbOx-Ni/ZnO-Al2O3 catalyzed lignin hydrogenolysis. It was found that the introduction of the Nb species was in favor of breaking the beta-O-4 bond and avoiding the excessive hydrogenation of aromatic rings.

引用

页码：7866 / 7875

页数：10

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