Rapid evaluation method for oil-gas separation membrane utilizing mass spectrometry

IF 1.2 4区化学 Q4 CHEMISTRY, ANALYTICAL

Chinese Journal of Analytical Chemistry Pub Date : 2025-02-21 DOI:10.1016/j.cjac.2025.100515

Haiyun SONG , Han WANG , Haobin WANG , Youjiang LIU , Shaomin LIU , Chilai CHEN

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Abstract

A rapid evaluation method for the permeation performance of oil-gas separation membrane was proposed, utilizing membrane inlet mass spectrometry technology to simultaneously measure the permeation flux of various dissolved gases. This method enables the rapid measurement of membrane permeability coefficient, selectivity and particularly, membrane response time. Permeation performance comparisons were conducted for perfluoro-2,2-dimethyl-1,3-dioxolane-tetrafluoroethylene copolymer (AF2400), fluorinated ethylene propylene (FEP), polydimethylsiloxane (PDMS) and perfluoro-2-dimethyl-5,5-dimethyl-1,3-dioxolane-tetrafluoroethylene copolymer (PT610) membranes, and the effects of oil feeding rate and concentration on PT610 membrane permeation flux were investigated. The results indicated that the selectivity and permeability of different membranes varied. PT610 and AF2400 membrane exhibited high permeability to the main air components, including CH₄, H₂O, N₂, O₂, Ar and CO₂. PDMS membrane showed high permeability only to CH₄ and H₂O, while FEP membrane demonstrated relatively low permeability across all gases. Additionally, different membranes displayed varying response time to the same substance, and the response time for the same membrane varied slightly for different substances. Specifically, PDMS and AF2400 membrane response time of approximately 2 and 3 min, respectively, while PT610 membrane response time was around 1 min, and FEP membrane showed no response. Compared to traditional method based on osmotic equilibrium time, the proposed method reduces the measurement time significantly.

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油气分离膜质谱快速评价方法

提出了一种快速评价油气分离膜渗透性能的方法，利用膜入口质谱技术同时测量各种溶解气体的渗透通量。这种方法可以快速测量膜的渗透系数、选择性，特别是膜的响应时间。对全氟-2,2-二甲基-1,3-二氧索烷-四氟乙烯共聚物（AF2400）、氟化乙丙烯（FEP）、聚二甲基硅氧烷（PDMS）和全氟-2-二甲基-5,5-二甲基-1,3-二氧索烷-四氟乙烯共聚物（PT610）膜的渗透性能进行了比较，并考察了进油速率和浓度对PT610膜渗透通量的影响。结果表明，不同膜的选择性和通透性不同。PT610和AF2400膜对CH4、H2O、N2、O2、Ar和CO2等主要空气组分具有较高的透性。PDMS膜仅对CH4和H2O具有较高的透性，而FEP膜对所有气体的透性相对较低。此外，不同膜对同一物质的反应时间不同，同一膜对不同物质的反应时间略有不同。其中，PDMS和AF2400膜响应时间分别约为2 min和3 min，而PT610膜响应时间约为1 min， FEP膜无响应。与传统的基于渗透平衡时间的方法相比，该方法显著缩短了测量时间。

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来源期刊

Chinese Journal of Analytical Chemistry 化学-分析化学

CiteScore

3.60

自引率

25.00%

发文量

17223

审稿时长

35 days

期刊介绍： Chinese Journal of Analytical Chemistry(CJAC) is an academic journal of analytical chemistry established in 1972 and sponsored by the Chinese Chemical Society and Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. Its objectives are to report the original scientific research achievements and review the recent development of analytical chemistry in all areas. The journal sets up 5 columns including Research Papers, Research Notes, Experimental Technique and Instrument, Review and Progress and Summary Accounts. The journal published monthly in Chinese language. A detailed abstract, keywords and the titles of figures and tables are provided in English, except column of Summary Accounts. Prof. Wang Erkang, an outstanding analytical chemist, academician of Chinese Academy of Sciences & Third World Academy of Sciences, holds the post of the Editor-in-chief.