期刊
BIORESOURCE TECHNOLOGY
卷 268, 期 -, 页码 323-331出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.07.117
关键词
Lignin; Pyrolysis; AAEMs-loaded char; Volatile-char interactions; Coke deposition; Bio-oil
资金
- National Natural Science Foundation of China, China [51536009, 51406109]
- Shandong Natural Science Foundation of China, China [ZR2017MEE004, ZR2016YL012]
- Distinguished Expert of Taishan Scholars (Shandong Province)
- Higher Education Superior Discipline Team Training Program of Shandong Province
This study aimed to explore the influence of inherent hierarchical porous char with alkali and alkaline earth metallic species (AAEMs) during pyrolysis of lignin derived from agricultural crop residues in a laboratory fixedbed at 550 degrees C. A catalytic strategy was implemented to investigate volatile-char interactions based on ex situ lignin pyrolysis. The physico-chemical properties of the AAEMs-loaded char were characterized by FTIR, XRD, SEM-EDX and N-2 nitrogen adsorption analyses. Results indicated that AAEMs-loaded char had a large specific surface area, hierarchical porosity, amorphous carbon structure, surface-active functional groups and highly dispersed metal species. Specifically, the specific surface area of AAEMs-loaded char was significantly reduced owing to coke deposition after interaction with pyrolysis vapours. Bio-oil composition revealed substantial increases in phenol, o-cresol, p-cresol and catechol. These increases were mainly attributed to demethylation, demethoxylation, or alkyl substitution reaction. The experimental results confirmed the occurrence of significant volatile-char interactions during lignin pyrolysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据