低温下均相和非均相催化剂协同作用下小麦秸秆的水热液化。
Synergistic hydrothermal liquefaction of wheat stalk with homogeneous and heterogeneous catalyst at low temperature.
机构信息
Zhoukou Normal University, School of Chemistry and Chemical Engineering, Wenchang Avenue, Zhoukou, Henan, China.
Zhoukou Normal University, School of Chemistry and Chemical Engineering, Wenchang Avenue, Zhoukou, Henan, China.
出版信息
Bioresour Technol. 2019 Apr;278:92-98. doi: 10.1016/j.biortech.2019.01.076. Epub 2019 Jan 19.
The effect of NaCO, Fe and NaCO + Fe during hydrothermal liquefaction (HTL) of wheat stalk with different temperature and reaction time was investigated in this study. The results indicated that NaCO + Fe can promote the cracking of wheat stalk compared with NaCO or Fe. Meanwhile, higher temperature favored the decomposition of wheat stalk and formation of heavy bio-oil. The highest heavy bio-oil yield was 24.25 wt% and the maximum liquefaction conversion rate was 89.45 wt% in system of NaCO + Fe at 270 °C. The analysis results indicated that longer reaction time could promote liquefaction conversion especially for heavy bio-oil with NaCO + Fe during the process of HTL. GC-MS, UPLC-MS and FT-IR analysis indicated that the major organic compounds in heavy bio-oil were aromatic compounds, alcohols, ketones, alkanes, and aldehydes, among of them aromatic compounds were the most prevalent.
本研究考察了在不同温度和反应时间下，水热液化（HTL）过程中碳酸钠（NaCO）、铁（Fe）和碳酸钠加铁（NaCO+Fe）对麦秆的影响。结果表明，与碳酸钠或铁相比，碳酸钠加铁可以促进麦秆的裂解。同时，较高的温度有利于麦秆的分解和重质生物油的生成。在 270°C 的碳酸钠加铁体系中，重质生物油的最高收率为 24.25wt%，液化转化率最高可达 89.45wt%。分析结果表明，在 HTL 过程中，较长的反应时间可以促进液化转化，尤其是在碳酸钠加铁体系中生成重质生物油。GC-MS、UPLC-MS 和 FT-IR 分析表明，重质生物油中的主要有机化合物为芳香族化合物、醇类、酮类、烷烃和醛类，其中芳香族化合物最为常见。
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