High-quality bio-oil from one-pot catalytic hydrocracking of kraft lignin over supported noble metal catalysts in isopropanol system

被引：87
|
作者：
Yang, Jing [1 ]
Zhao, Liang [1 ]
Liu, Shaotong [1 ]
Wang, Yuanyuan [1 ]
Dai, Liyi [1 ]
机构：
[1] E China Normal Univ, Coll Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, 500 Dongchuan Rd, Shanghai 200241, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2016年 / 212卷
关键词：
Kraft lignin; Isopropanol; Hydrocracking; Orthogonal array design; Nobel metal catalysts; CONVERSION; DEPOLYMERIZATION; HYDRODEOXYGENATION; CHEMICALS; PHENOLS; ETHANOL; TRANSFORMATION; GUAIACOL; BIOMASS;
D O I：
10.1016/j.biortech.2016.04.029
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Catalytic hydrocracking of kraft lignin was carried out in isopropanol system and an orthogonal array design (OAD) was employed to optimize the experimental conditions. GC-MS/FID, elemental analysis, GPC and H-1-C-13 HSQC NMR were carried out for entire investigation of the liquid products. The results indicated that the hydrocracking process was thermally controlled and catalysts showed significant influences on the product distributions. Comparing with Pd/C, Pt/C and Ru/C, Rh/C inhibited the self condensation of isopropanol and reduced the formation of oxygenic-chain compounds. The excellent catalytic activity for phenols conversion was obtained over Rh/C. The routes of oxygenic-chain compounds formation and phenol conversion were proposed in detail. The least oxygenic-chain compounds formation, the highest phenols conversion (93.4%), the lowest O/C ratio (0.094) and the highest HHV (37.969 MJ/kg) provided the possibility of the high quality bio-oil obtained over Rh/C in isopropanol medium. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：302 / 310
页数：9
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