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TG和py-gc/ms研究不同烟草的热解特性

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西北民族大学学报（自然科学版） 2024年第1期45卷 14-24页

作者：苏小平申涛张平苏琼王彦斌孙鸣马晓迅西北民族大学化工学院、环境友好复合材料国家民委重点实验室、甘肃省生物质功能复合材料工程研究中心、甘肃省高校环境友好复合材料及生物质利用重点实验室甘肃兰州730030 西北大学化工学院、碳氢资源清洁利用国家国际科技合作基地、陕北能源先进化工利用技术教育部工程研究中心、陕西省洁净煤转化工程技术中心陕西西安710069

利用TG和py-gc/ms对兰州、猴王和中华三种香烟的烟丝进行了热解特性分析,并用商业烟嘴过滤器和gc/ms对香烟中的烟焦油进行了收集与组成分析.结果表明,三种品牌的香烟烟丝在相同的气氛下热失重曲线的变化基本类似.热失重主要发生在第Ⅱ(... 详细信息

利用TG和py-gc/ms对兰州、猴王和中华三种香烟的烟丝进行了热解特性分析,并用商业烟嘴过滤器和gc/ms对香烟中的烟焦油进行了收集与组成分析.结果表明,三种品牌的香烟烟丝在相同的气氛下热失重曲线的变化基本类似.热失重主要发生在第Ⅱ(120℃~360℃)和第Ⅲ(360℃~600℃)阶段,与N_(2)气氛相比,O_(2)气氛下烟丝的热解速率和总失重明显增加,尤其对第Ⅲ阶段的热解有明显促进作用.三种香烟的烟丝热解挥发分中组分含量不同,兰州、猴王和中华烟的烟丝热解挥发分中烟碱含量最高,分别达到8.35%、6.53%和6.24%;三种品牌香烟的烟焦油含量大小顺序为中华>兰州>猴王.三种香烟的烟焦油组成差异明显,兰州烟和中华烟的烟焦油中含量最高的是烟碱,而猴王烟的烟焦油中含量最高的是醇类化合物.

关键词：烟丝 TG py-gc/ms 烟焦油

Kinetics and Products Distribution Study on the Catalytic Effect of Zn/HZSM-5 over pyrolysis of Chlorella through TG-FTIR and py-gc/ms

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Journal of Thermal Science 2023年第4期32卷 1635-1643页

作者： WANG Lu YE Tao MA Xianming LIN Yan CHEN Juan WANG Fangbin MA Peiyong LIU Jian School of Food and Biological Engineering Hefei University of TechnologyHefei230009China School of Mechanical Engineering Hefei University of TechnologyHefei230009China Engineering Research Center of Bio-process Ministry of EducationHefei University of TechnologyHefei230009China

In this study,both the pyrolysis and catalytic pyrolysis behaviour of chlorella were investigated using thermogravimetric analysis combined with Fourier Transform Infrared spectrum(TG-FTIR)and py-gc/ms.The results of TG indicated the pyrolysis of chlorella was divided into three stages,and the Coats-Redfern kinetic model was used for the analysis and validation of the obtained thermal data.The regression coefficients indicated that the pyrolysis of chlorella was close to second-order reaction.The activation energy of pyrolysis of chlorella and catalytic pyrolysis of chlorella+HZSM-5,chlorella+Zn/HZSM-5 was 61.645,59.080 and 56.808 kJ·mol^(−1),respectively.Combined with the data of FTIR,we found that the addition of the HZSM-5 effectively reduced the activation energy required by pyrolysis;the addition of the Zn/HZSM-5 could not only reduce the activation energy,but also reduce the yield of oxygen-containing compounds,increase the emissions of CO_(2),and facilitate the production of high value-added hydrocarbon products.These results were also verified by py-gc/ms that the addition of Zn/HZSM-5 could reduce the formation of ketones and aldehydes and increase the production of nitrogen-containing compounds.Thus,through the catalytic pyrolysis of chlorella,the utilization range of chlorella can be expanded,and better bio-oil can be obtained,which will play a crucial role in the selection of available energy in the future.

关键词： catalytic pyrolysis chlorella TG-FTIR kinetic Zn/HZSM-5 py-gc/ms

Mechanism of Xylan pyrolysis by py-gc/ms

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Chemical Research in Chinese Universities 2013年第4期29卷 782-787页

作者： WANG Shu-rong LIANG Tao RU Bin GUO Xiu-juan State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 P. R. China

In order to investigate the decomposition behavior of hemicellulose, xylan was chosen as the representative of hemicellulose to study the fast pyrolysis on the combination system of analytical pyrolyzer and gas chromatograph coupled with mass spectrometer（py-gc/ms）. The main condensable products of xylan pyrolysis consisted of acids, al- dehydes, and ketones; while gas products contained CO2, CO, CH4 and H〉 Acetic acid and furfural were the most abun- dant products with the highest contents of 20.11% and 20.24% respectively. While furfural and acetic acid were formed competitively with residence time and temperature increases, the distribution of xylan pyrolysis products did not vary with the residence time and temperature, while the total content of several kinds of products changed a lot. According to the analysis of experimental data, a reaction pathway of xylan decomposition was deduced so as to illustrate the forma- tion mechanism of main products.

关键词： Xylan pyrolysis py-gc/ms Acetic acid Furfural

Direct Fingerprinting Polycyclic Aromatic Hydrocarbons in Heavy Oils by py-gc/ms and Its Application to Hydrotreating Processes

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China Petroleum Processing & Petrochemical Technology 2012年第1期14卷 8-14页

作者： Cai Xinheng Liu Yingrong Tian Songbai Zhou Jian Liu Zelong Research Institute of Petroleum Processing SINOPECBeijing 100083

An efficient analytical method combining pyrolysis and capillary gc/ms has been developed for determination and quantitation of targeted polycyclic aromatic hydrocarbons.The limit of detection ranged from 0.29 μg/g to 43.46 μg/g,and repeatability values were between 0.1% and 8.2% for blank spiked samples and between 0.1 % and 9.8% for real samples of heavy oils.Through application of the proposed method in hydrotreating processes,it has been found out that heavy oils before and after the specified hydroprocessing treatment exhibited a diverse PAHs distribution which might be determined by the discrepancy in their intrinsic contents and hydrogenation reactivity.Furthermore,the hydrogenation reactivity of different polycyclic aromatic hydrocarbons was further investigated and discovered to be more interrelated to molecular structure and rings alignment or conjugation mode.

关键词：多环芳烃 py-gc/ms 加氢过程应用重油气相色谱/质谱分析指纹加氢反应

py-gc/ms study of lignin pyrolysis and effect of catalysts on product distribution

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International Journal of Agricultural and Biological Engineering 2017年第5期10卷 214-225页

作者： Si Zhan Wang Chenguang Bi Kang Zhang Xinghua Yu Chiling Dong Renjie Ma Longlong Pang Changle Bioenergy and Environment Science&Technology Laboratory College of EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureBeijing 100083China School of Chemical Engineering and Energy Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China Department of Vehicle Engineering College of EngineeringChina Agricultural UniversityBeijing 100083China

Fast pyrolysis is one of the most promising methods to convert lignin into fuels and chemicals.In the present study,pyrolysis-gas chromatography/mass spectrometry(py-gc/ms)was used to evaluate vapor phase product distribution of lignin fast pyrolysis.During the non-catalytic pyrolysis process,lignin was pyrolyzed at 400℃,500℃ and 600℃ respectively,finding that the highest yield of aromatic hydrocarbons was obtained at 600℃.Catalytic pyrolysis experiments were also conducted to investigate the effects of catalyst pore structure and acidity on the product distributions.Five different catalysts(HZSM-5,MCM-41,TiO_(2),ZrO_(2) and Mg(Al)O)were applied to lignin catalytic pyrolysis,and the catalytic performance was estimated by analyzing the pyrolytic products.The catalysts were characterized by using X-ray diffraction(XRD),BET,and NH3(CO_(2))temperature programmed desorption.Based on these characterizations,discussion was carried out to explain the formation of the produc distributions.Among the five catalysts,HZSM-5 exhibited the best performance on the formation of aromatic hydrocarbons.

关键词： lignin py-gc/ms fast pyrolysis catalytic upgrading pore structure acid-base property

基于py-gc/ms的污泥含碳、氧官能团热解演化过程研究

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化工学报 2018年第10期69卷 4378-4385页

作者：卢艳军胡艳军余帆于文静浙江工业大学能源与动力工程研究所浙江杭州310024

基于裂解-气相色谱/质谱联用技术(py-gc/ms),分析了污泥中主要含碳和含氧官能团在不同温度条件下的热解演变规律和热化学转化路径。结果表明,污泥中主要含碳和含氧官能团为碳碳双键(C C)、羧基(COOH)、羟基(—OH)、醛基(—CHO)和苯环(π... 详细信息

基于裂解-气相色谱/质谱联用技术(py-gc/ms),分析了污泥中主要含碳和含氧官能团在不同温度条件下的热解演变规律和热化学转化路径。结果表明,污泥中主要含碳和含氧官能团为碳碳双键(C C)、羧基(COOH)、羟基(—OH)、醛基(—CHO)和苯环(π-π*)。温度对官能团裂解演变的影响较大,低温热解阶段(550℃),由于脂肪烃分子化学活性增强,主要发生以脱水、脱羧、脱羰和羟醛缩合等为主的芳香化缩聚反应,同时由于污泥中的蛋白质、纤维素等大分子热解使得π-π*成为产物中主要官能团。根据各个官能团热解演变规律,提出了污泥含碳、含氧官能团热解演变反应路径。

关键词：污泥热解含碳官能团含氧官能团 py-gc/ms 反应路径

基于py-gc/ms的中低温煤焦油催化裂解研究

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中国矿业大学学报 2019年第3期48卷 647-654页

作者：孙鸣刘永琦张丹马明明么秋香贾强马晓迅西北大学化工学院碳氢资源清洁利用国家国际科技合作基地陕北能源先进化工利用技术教育部工程研究中心陕北能源化工产业发展协同创新中心陕西西安710069 多伦多大学化学工程与应用化学系

以陕北中低温煤焦油重油(CT)为原料,采用旋转薄膜精馏仪,减压200℃条件下,切取得到轻质煤焦油馏分(LCTF)和重质煤焦油馏分(HCTF).并以HZSM-5,γ-Al_2O_3,MHZSM-5和Mγ-Al_2O_3(M=w(Ni)+w(Mo),其中w(Ni)=4%,w(Mo)=20%)为催化剂,借助热裂解-气相色谱/质谱联用仪(py-gc/ms),对CT,LCTF和HCTF进行快速(催化)裂解,考察了催化剂对裂解产物分布的影响.研究表明:催化剂对3种原料均具有催化形成轻质芳烃的改质效果,强酸性位含量丰富的HZSM-5,改质效果优于具有一定量弱酸性位的γ-Al_2O_3.随着重质组分(主要为多环芳烃)的增多,LCTF,CT和HCTF分别经同种催化剂催化改质形成轻质芳烃的转化率逐渐降低.HCTF分别经HZSM-5和MHZSM-5催化裂解后,含氧化合物百分比分别降低了63%和42%,脂肪烃百分比分别增加了39%和145%.

关键词：中低温煤焦油快速热解催化裂解 py-gc/ms

热裂解-气相色谱质谱法(py-gc/ms)分析涂料中的溶剂和树脂

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中国涂料 2022年第12期37卷 55-59页

作者：汪杰张海江夏萌徐春英海洋化工研究院有限公司山东青岛266071 青岛澳康质量检测技术有限公司山东青岛266071

采用热裂解–气相色谱质谱(py-gc/ms)方法对未知涂料样品进行分析,树脂在高温惰性环境下裂解为低分子物质,再通过气相色谱质谱分析。不需要繁复冗长的分离步骤,利用最后裂解碎片产物反推被测化合物的组成和结构,对低分子量的溶剂、高分... 详细信息

采用热裂解–气相色谱质谱(py-gc/ms)方法对未知涂料样品进行分析,树脂在高温惰性环境下裂解为低分子物质,再通过气相色谱质谱分析。不需要繁复冗长的分离步骤,利用最后裂解碎片产物反推被测化合物的组成和结构,对低分子量的溶剂、高分子量的树脂进行准确定性,对于常规方法难以定性的混合树脂,热裂解气相–质谱联用仪可以快速定性树脂成分,对于涂料配方的改进、涂料性能的提升有重要意义。

关键词：热裂解–气相色谱质谱 py-gc/ms 涂料材料分析树脂

利用py-gc/ms研究温度和时间对生物质热解油的影响

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现代化工 2016年第1期36卷 106-109,111页

作者：孙来芝张晓东陈雷谢新苹杨双霞赵保峰司洪宇山东省科学院能源研究所山东省生物质气化技术重点实验室山东济南250014

以木粉为原料,在不同反应条件下利用py-gc/ms装置对其进行快速热解,并对热解油气进行在线检测分析,研究反应温度和热解时间对生物油组成及其产率的影响。结果表明,在400℃条件下生物油组成单一,便于分离和提纯;继续升高温度,生物油组成... 详细信息

以木粉为原料,在不同反应条件下利用py-gc/ms装置对其进行快速热解,并对热解油气进行在线检测分析,研究反应温度和热解时间对生物油组成及其产率的影响。结果表明,在400℃条件下生物油组成单一,便于分离和提纯;继续升高温度,生物油组成及其产率均逐步增加;温度高于700℃,有利于轻质类和芳香烃类碳氢化合物的生成。同一反应温度,不同热解时间,生物油组成保持稳定,但各类化合物的产率均发生变化。在反应温度为600℃,反应时间为25 s的条件下,高附加值的苯酚类化合物的产率最高。

关键词：生物质热解油温度时间 py-gc/ms