木质素对氨基酸热解生物油中含氮产物的影响
Effect of Lignin on Nitrogen-Containing Products from Amino Acid Pyrolysis of Bio-Oil
黄轩 1田红 1成珊 1陈珣 2刘磊 1危洋岳 1杨扬3
作者信息
- 1. 长沙理工大学能源与动力工程学院,长沙 410114
- 2. 国网湖南省电力有限公司电力科学研究院,长沙 410007
- 3. 华中科技大学能源与动力工程学院煤燃烧国家重点实验室,武汉 430074
- 折叠
摘要
本研究采用实验与模拟相结合方法,分析了生物质中木质素与主要含氮成分共热解过程中相互作用及热解油中含氮产物分布.实验结果表明,谷氨酸单独热解时,产物含氮化合物可高达97％;共热解时,产物中含氮化合物降低至10％;高温时,香兰素促进谷氨酸脱羧反应,提升吡咯烷酮产率.模拟结果表明,谷氨酸分别与香兰素热解中间产物愈创木酚、邻亚甲基苯醌之间发生的脱水缩合及美拉德反应为最佳反应路径,且两者存在一定竞争关系.
Abstract
In this study,a combination of experiments and simulations was used to analyse the interaction between lignin and the main nitrogenous components in biomass during co-pyrolysis and the distribution of nitrogenous products in the pyrolysis oil.The experimental results showed that the nitrogenous compounds in the product could reach 97％when glutamic acid was pyrolysed alone;when co-pyrolysis was carried out,the nitrogenous compounds in the product decreased to 10％;at high temperature,vanillin promoted the decarboxylation of glutamic acid and enhanced the yield of pyrrolidone.The simulation results showed that the best reaction pathway was the dehydra-tion condensation and the merad reaction between glutamic acid and the intermediate products of vanillin pyrolysis,guaiacol and o-methylenebenzoquinone,respectively,and there was a competitive relationship between them.
关键词
木质素/谷氨酸/共热解/含氮产物/密度泛函理论Key words
lignin/glutamic acid/co-pyrolysis/nitrogenous products/density functional theory引用本文复制引用
基金项目
国家自然科学基金项目(51706022)
湖南省自然科学基金项目(2022JJ30607)
长沙市自然科学基金项目(kq202202)
长沙理工大学研究生科研创新项目(CXCLY2022089)
出版年
2024
NETL
NSTL
万方数据