文献类型：期刊文献

中文题名：纤维素两步法制备生物基对二甲苯的料液成分分析

英文题名：Composition Analysis of Bio-based p-Xylene Prepared by a Two-step Cellulose Process

作者：沈袁博[1];邱勇隽[1];孙伟振[2];蒋丽华[1];王宜冰[1];赵黎明[1]

机构：[1]华东理工大学生物工程学院,生物反应器工程全国重点实验室,上海200237;[2]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2026

卷号：45

期号：2

起止页码：347

中文期刊名：分析测试学报

外文期刊名：Journal of Instrumental Analysis

收录：;北大核心:【北大核心2023】；

基金：国家重点研发计划项目(2022YFC2104500)。

语种：中文

中文关键词：生物基对二甲苯;GC-MS;挥发性有机化合物;多元统计分析

外文关键词：bio-based p-xylene;GC-MS;volatile organic compounds;multivariate statistical analysis

摘要：生物基对二甲苯(PX)是生产生物基对苯二甲酸(PTA)的前体,是制造生物基刚性环聚酯PET、PBT、PTT等的核心物质。通过“纤维素→2,5-己二酮(HDO)→PX”两步法路线合成生物基PX的工艺物料中产生大量未知的挥发性杂质,严重影响后续的氧化精制及聚合反应,开发生物基PX分离纯化技术至关重要。该研究利用气相色谱-质谱联用技术(GC-MS)对生物基PX料液中的挥发性成分进行分析,结合多元统计分析手段对料液体系进行批次稳定性评价。结果表明:共检测出100种挥发性有机化合物,包含烃类化合物71种,醇类化合物4种,酚类化合物2种,酮类化合物8种,酯类化合物2种,呋喃类化合物7种以及其他化合物6种。其中,PX含量的批次间差异较小,反应底物2,5-己二酮的含量呈现显著性差异。根据多元统计分析结果,样品#1与其他批次样品(样品#2~样品#7)存在较大差异,后续批次较稳定。该文对生物基PX料液的组成成分进行了系统分析并建立了评价模型,可为后续分离工艺的研发提供数据支撑。
Bio-based p-xylene(PX)is a precursor for the production of bio-based terephthalic acid(PTA),which is the core material for the manufacture of bio-based rigid cyclic polyesters such as PET,PBT and PTT.The synthesis of bio-based PX by the two-step route“cellulose→2,5-hexane?dione(HDO)→PX”generates a large number of unknown volatile impurities in the process material,which seriously affects the oxidative refining and polymerization reaction in the subsequent sequence,so it is crucial to develop the separation and purification technology of bio-based PX.In this study,the volatile components in the bio-based PX feed solution were analyzed by GC-MS,and the stability of the feed solution system was evaluated by means of multivariate statistical analysis.The results showed that 100 volatile organic compounds were detected in the feed solution,including 71 hydro?carbons,4 alcohols,2 phenols,8 ketones,2 esters,7 furans and 6 other compounds.Among them,the PX content showed small inter-batch differences,and the content of the reaction substrate 2,5-hexanedione showed significant differences.According to the results of multivariate statistical analysis,the early batch(Sample#1)showed a large difference from the other batch samples(Sample#2-Sample#7),and the subsequent batches showed better stability overall.In this study,the com?position of bio-based PX feed and its stability were systematically analyzed and an evaluation model was established,which can provide data support for the development of subsequent separation pro?cesses.