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

Yang, Jing, Zhao, Liang, Liu, Shaotong, Wang, Yuanyuan and Dai, Liyi 2016. High-quality bio-oil from one-pot catalytic hydrocracking of kraft lignin over supported noble metal catalysts in isopropanol system. Bioresource Technology 212 , pp. 302-310. 10.1016/j.biortech.2016.04.029

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Abstract

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 1H-13C 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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Elsevier
ISSN: 0960-8524
Last Modified: 04 Oct 2021 15:30
URI: https://orca.cardiff.ac.uk/id/eprint/143491

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