Quantitative analysis of hydrogen mass fraction in catalytically reacted 1,4-bis(phenylethynyl)benzene by gas chromatography-mass spectrometry

IF 4 2区 化学 Q1 BIOCHEMICAL RESEARCH METHODS
Lei Yu , Bo Liu , Pucheng Wang , Shuai Liu , Junjie Sheng , Yinyong Ao
{"title":"Quantitative analysis of hydrogen mass fraction in catalytically reacted 1,4-bis(phenylethynyl)benzene by gas chromatography-mass spectrometry","authors":"Lei Yu ,&nbsp;Bo Liu ,&nbsp;Pucheng Wang ,&nbsp;Shuai Liu ,&nbsp;Junjie Sheng ,&nbsp;Yinyong Ao","doi":"10.1016/j.chroma.2025.466247","DOIUrl":null,"url":null,"abstract":"<div><div>1,4-Bis(phenylethynyl)benzene blended with an activated carbon-supported palladium catalyst has been demonstrated as an effective hydrogen scavenger in reducing hydrogen gas accumulation within vacuum-sealed and hermetically closed systems. Accurate determination of the hydrogen mass fraction in reacted 1,4-bis(phenylethynyl)benzene (DEB) is essential for guiding the replacement of hydrogen-absorbing materials. In this study, a novel method for determining the hydrogen mass fraction in reacted DEB was developed. First, the reaction products of DEB with hydrogen gas were isolated and characterized using gas chromatography-mass spectrometry (GC–MS). A correlation between the peak areas of the reaction products and the saturation level of DEB was established. The hydrogen mass fraction in the reacted DEB was precisely determined based on the relationship between DEB saturation and hydrogen content. Furthermore, the effect of O₂ on the hydrogen uptake of DEB was investigated using the developed method. The results demonstrate that this method exhibits high detection sensitivity and accuracy for determining the hydrogen mass fraction in reacted DEB, offering a reliable approach for monitoring hydrogen absorption in such systems.</div></div>","PeriodicalId":347,"journal":{"name":"Journal of Chromatography A","volume":"1759 ","pages":"Article 466247"},"PeriodicalIF":4.0000,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chromatography A","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021967325005928","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
引用次数: 0

Abstract

1,4-Bis(phenylethynyl)benzene blended with an activated carbon-supported palladium catalyst has been demonstrated as an effective hydrogen scavenger in reducing hydrogen gas accumulation within vacuum-sealed and hermetically closed systems. Accurate determination of the hydrogen mass fraction in reacted 1,4-bis(phenylethynyl)benzene (DEB) is essential for guiding the replacement of hydrogen-absorbing materials. In this study, a novel method for determining the hydrogen mass fraction in reacted DEB was developed. First, the reaction products of DEB with hydrogen gas were isolated and characterized using gas chromatography-mass spectrometry (GC–MS). A correlation between the peak areas of the reaction products and the saturation level of DEB was established. The hydrogen mass fraction in the reacted DEB was precisely determined based on the relationship between DEB saturation and hydrogen content. Furthermore, the effect of O₂ on the hydrogen uptake of DEB was investigated using the developed method. The results demonstrate that this method exhibits high detection sensitivity and accuracy for determining the hydrogen mass fraction in reacted DEB, offering a reliable approach for monitoring hydrogen absorption in such systems.
气相色谱-质谱法定量分析催化反应1,4-双(苯乙基)苯中氢的质量分数
1,4-双(苯乙基)苯与活性炭负载的钯催化剂混合已被证明是一种有效的氢气清除剂,可减少真空密封和密封系统中的氢气积聚。准确测定反应中的1,4-双(苯乙基)苯(DEB)中氢的质量分数,对指导吸氢材料的替代具有重要意义。本文提出了一种测定DEB反应中氢质量分数的新方法。首先,对DEB与氢气的反应产物进行分离,并采用气相色谱-质谱(GC-MS)对其进行表征。建立了反应产物峰面积与DEB饱和水平的相关性。根据DEB饱和度与氢含量的关系,精确测定了反应DEB中氢的质量分数。此外,还研究了O₂对DEB吸附氢的影响。结果表明,该方法对测定反应DEB中氢气质量分数具有较高的检测灵敏度和准确性,为此类体系中氢气吸收率的监测提供了可靠的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Chromatography A
Journal of Chromatography A 化学-分析化学
CiteScore
7.90
自引率
14.60%
发文量
742
审稿时长
45 days
期刊介绍: The Journal of Chromatography A provides a forum for the publication of original research and critical reviews on all aspects of fundamental and applied separation science. The scope of the journal includes chromatography and related techniques, electromigration techniques (e.g. electrophoresis, electrochromatography), hyphenated and other multi-dimensional techniques, sample preparation, and detection methods such as mass spectrometry. Contributions consist mainly of research papers dealing with the theory of separation methods, instrumental developments and analytical and preparative applications of general interest.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信