{"title":"用于增强 CO2/N2 分离的含钙铝烯烃的新型混合基质膜","authors":"","doi":"10.1016/j.seppur.2024.129792","DOIUrl":null,"url":null,"abstract":"<div><div>Calixarene possessing advantages of small intrinsic cavity size, small particle dimension, and facile dispersion or dissolution in common solvents, is promising filler candidates in mixed matrix membranes (MMMs) for gas separation. Herein, the supramolecular C-propylpyrogallol[4]arene (PgC<sub>3</sub>) was successfully synthesized via a phenolic resin condensation reaction. It was then incorporated into a polyether-polyamide block copolymer (Pebax-1657) to prepare mixed matrix membranes (MMMs) with varying PgC<sub>3</sub> loadings for CO<sub>2</sub>/N<sub>2</sub> separation. The formation of hydrogen bonds between PgC<sub>3</sub> and Pebax facilitated the uniform dispersion of PgC<sub>3</sub> within the polymer matrix, enhancing interfacial compatibility. The incorporation of PgC<sub>3</sub> significantly enhanced the CO<sub>2</sub>/N<sub>2</sub> selectivity of the Pebax while preserving its permeability. The 1 wt% PgC<sub>3</sub>/Pebax MMMs performs the best CO<sub>2</sub>/N<sub>2</sub> selectivity of 58.6, substantially higher than that of pristine Pebax membrane (32.4). This improvement can be attributed to the strong affinity between the abundant –OH groups in PgC<sub>3</sub> and CO<sub>2</sub> molecules. Moreover, the PgC<sub>3</sub>/Pebax MMMs exhibited exceptional stability under operating pressures of up to 5 bar, maintaining its performance consistently throughout a demanding100-hour test. The good separation performance together with the excellent stability enables PgC<sub>3</sub> a promising filler in MMMs for CO<sub>2</sub>/N<sub>2</sub> or other gas separations.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel mixed matrix membranes containing calixarene for enhanced CO2/N2 separation\",\"authors\":\"\",\"doi\":\"10.1016/j.seppur.2024.129792\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Calixarene possessing advantages of small intrinsic cavity size, small particle dimension, and facile dispersion or dissolution in common solvents, is promising filler candidates in mixed matrix membranes (MMMs) for gas separation. Herein, the supramolecular C-propylpyrogallol[4]arene (PgC<sub>3</sub>) was successfully synthesized via a phenolic resin condensation reaction. It was then incorporated into a polyether-polyamide block copolymer (Pebax-1657) to prepare mixed matrix membranes (MMMs) with varying PgC<sub>3</sub> loadings for CO<sub>2</sub>/N<sub>2</sub> separation. The formation of hydrogen bonds between PgC<sub>3</sub> and Pebax facilitated the uniform dispersion of PgC<sub>3</sub> within the polymer matrix, enhancing interfacial compatibility. The incorporation of PgC<sub>3</sub> significantly enhanced the CO<sub>2</sub>/N<sub>2</sub> selectivity of the Pebax while preserving its permeability. The 1 wt% PgC<sub>3</sub>/Pebax MMMs performs the best CO<sub>2</sub>/N<sub>2</sub> selectivity of 58.6, substantially higher than that of pristine Pebax membrane (32.4). This improvement can be attributed to the strong affinity between the abundant –OH groups in PgC<sub>3</sub> and CO<sub>2</sub> molecules. Moreover, the PgC<sub>3</sub>/Pebax MMMs exhibited exceptional stability under operating pressures of up to 5 bar, maintaining its performance consistently throughout a demanding100-hour test. The good separation performance together with the excellent stability enables PgC<sub>3</sub> a promising filler in MMMs for CO<sub>2</sub>/N<sub>2</sub> or other gas separations.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586624035317\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586624035317","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Novel mixed matrix membranes containing calixarene for enhanced CO2/N2 separation
Calixarene possessing advantages of small intrinsic cavity size, small particle dimension, and facile dispersion or dissolution in common solvents, is promising filler candidates in mixed matrix membranes (MMMs) for gas separation. Herein, the supramolecular C-propylpyrogallol[4]arene (PgC3) was successfully synthesized via a phenolic resin condensation reaction. It was then incorporated into a polyether-polyamide block copolymer (Pebax-1657) to prepare mixed matrix membranes (MMMs) with varying PgC3 loadings for CO2/N2 separation. The formation of hydrogen bonds between PgC3 and Pebax facilitated the uniform dispersion of PgC3 within the polymer matrix, enhancing interfacial compatibility. The incorporation of PgC3 significantly enhanced the CO2/N2 selectivity of the Pebax while preserving its permeability. The 1 wt% PgC3/Pebax MMMs performs the best CO2/N2 selectivity of 58.6, substantially higher than that of pristine Pebax membrane (32.4). This improvement can be attributed to the strong affinity between the abundant –OH groups in PgC3 and CO2 molecules. Moreover, the PgC3/Pebax MMMs exhibited exceptional stability under operating pressures of up to 5 bar, maintaining its performance consistently throughout a demanding100-hour test. The good separation performance together with the excellent stability enables PgC3 a promising filler in MMMs for CO2/N2 or other gas separations.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.