Gasification of guaiacol in supercritical water: Detailed reaction pathway and mechanisms

被引：49
作者：
Zhu, Chao [1 ,2 ]
Guo, Liejin [1 ]
Jin, Hui [1 ]
Ou, Zhisong [1 ]
Wei, Wenwen [1 ]
Huang, Jianbing [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China
[2] State Grid Shaanxi Elect Power Res Inst, 669 Middle Aerosp Rd, Xian 710100, Shaanxi, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 31期
关键词：
Guaiacol; Lignin; Gasification; Supercritical water; Reaction pathway; NOBLE-METAL CATALYSTS; HOT COMPRESSED WATER; HYDROGEN-PRODUCTION; HEATING RATE; HYDROTHERMAL CONVERSION; BIOMASS GASIFICATION; LIGNIN GASIFICATION; GLUCOSE; HYDRODEOXYGENATION; METHANE;
D O I：
10.1016/j.ijhydene.2018.05.136
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Supercritical water gasification of guaiacol as a model compound for lignin was conducted in quartz reactors. The formation and degradation pathways of intermediates were discussed. The results show that the gasification efficiency of guaiacol in supercritical water increased as the reaction time increased. The intermediates in the residual liquid consisted mainly of phenols, arenes, cyclopentanones, alcohols and organic acids. Phenols and arenes were difficult to be gasified in supercritical water and easily turned into char and tar while cyclopentanones, alcohols and organic acids could be easily gasified and turn into hydrogen-rich gas. The Ru/Al2O3 catalyst promoted the degradation of phenols and arenes and thus inhibited the formation of char and tar. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：14078 / 14086
页数：9
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