Characterization of products from hydrothermal carbonization of pine
Characterization of products from hydrothermal carbonization of pine
复制标题
松木水热碳化产物的表征
DOI：
10.1016/j.biortech.2017.07.138
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发表时间：
2017
影响因子：
11.4
通讯作者：
Ragauskas Arthur J
中科院分区：
文献类型：
--
作者：
Wu Qiong;Yu Shitao;Hao Naijia;Wells Tyrone Jr;Meng Xianzhi;Li Mi;Pu Yunqiao;Liu Shouxin;Ragauskas Arthur J
本研究旨在揭示火炬松水热碳化固-液产物的结构特征和反应途径，其中固体产物可用作催化剂、吸附剂和电极材料，而液体产物可用于燃料和平台化学品的处理。结果显示，当在240 °C下处理时，纤维素和半纤维素部分降解为5-羟甲基糠醛和糠醛，其通过开环和Diels桤木反应进一步转化为芳族结构。木质素降解并形成碳-碳键，在呋喃化合物存在下通过脂肪族桥、醚或缩合反应连接形成芳香基序。水热处理后，回收的含甲氧基稠合芳族碳材料具有高固定碳含量和HHV。回收的液体产物是由糠醛和具有烷烃和羧基的多环芳烃结构组成的木质素类增值化学品，其总羟基含量随着反应时间的增加而降低。
This study aims to reveal the structural features and reaction pathways for solid–liquid products from hydrothermal carbonization of Loblolly pine, where the solid products can be used as catalysts, adsorbents and electrode materials while liquid products can be treated yielding fuels and platform chemicals. Results revealed when treated at 240 °C, cellulose and hemicellulose were degraded, in part, to 5-hydroxy-methyl furfural and furfural which were further transformed to aromatic structures via ring opening and Diels Alder reactions. Lignin degradation and formation of carbon–carbon bonds, forming aromatic motifs in the presence of furanic compounds connected via aliphatic bridges, ether or condensation reactions. After hydrothermal treatment, condensed aromatic carbon materials with methoxy groups were recovered with high fixed carbon content and HHV. The recovered liquid products are lignin-like value-added chemicals consisting of furfural and polyaromatic structure with alkanes and carboxyl, their total hydroxyl group content decreased when increasing reaction time.