铁、钙对脯氨酸热解氮演化规律影响机理研究
Study on the Influence Mechanism of Iron and Calcium on the Evolution of Nitrogen-Containing Products From Proline Pyrolysis
成珊 1杨婷 1田红 1陈文 2刘磊 1王少硕 1姚可慧 1官昌文1
作者信息
- 1. 长沙理工大学,长沙 410114
- 2. 国网湖南省电力有限公司电力科学研究院,长沙 410208
- 折叠
摘要
为探明铁、钙对脯氨酸热解中含氮物质转化路径的影响,本研究开展了不同温度(300℃、400℃、500℃、600℃)下添加铁、钙(Fe2O3、CaO与Fe2O3+CaO)的脯氨酸快速热解实验,结合原位红外光谱分析,发现脯氨酸前期通过双分子脱水缩合反应生成27.6％的DKP;铁、钙均促进吡嗪、吡咯、吡啶等单环含氮产物生成,且铁将吡咯的生成主要路径转变为脱水后脱羰基;同时添加铁、钙时,铁可延长钙促进嘌呤生成的温度区间延长至500℃,且二者协同使吡啶产量高达21.3％.
Abstract
In order to investigate the effects of iron and calcium on the conversion pathway of nitrogen-containing substances in proline pyrolysis,this study conducted rapid pyrolysis experi-ments of proline with the addition of iron and calcium(Fe2O3,CaO and Fe2O3+CaO)at different temperatures(300℃,400℃,500℃ and 600℃),and combined with in situ infrared spectroscopy analysis.DKP was found to be formed in the first stage of proline pyrolysis by bimolecular dehy-dration condensation.The yield reaches 27.6％.Iron and calcium both promote the formation of pyrazine,pyrrole,pyridine and other monocyclic nitrogen-containing products,and iron changes the main pathway of pyrrole generation to dehydration followed by decarbonylation.When iron and calcium are added simultaneously,iron can extend the temperature interval of calcium-promoted purine generation to 500℃ and synergistically make pyridine yield up to 21.3％.
关键词
脯氨酸/铁/钙/热解/含氮产物Key words
proline/iron/calcium/pyrolysis/nitrogen-containing product引用本文复制引用
基金项目
国家自然科学基金资助项目(52006016)
湖南省自然科学基金资助项目(2021JJ40573)
湖南省自然科学基金资助项目(2022JJ30607)
湖南省教育厅科学研究项目优秀青年项目(22B0291)
湖南省研究生科研创新项目(CX20220926)
出版年
2024
NETL
NSTL
万方数据