Ananda S. Amarasekara, Jay A. Gonzalez, Victor C. Nwankwo
{"title":"磺酸基功能化Brönsted酸性离子液体催化聚对苯二甲酸乙酯在水中解聚","authors":"Ananda S. Amarasekara, Jay A. Gonzalez, Victor C. Nwankwo","doi":"10.1016/j.jil.2022.100021","DOIUrl":null,"url":null,"abstract":"<div><p>Sulfonic acid group functionalized 1,3-dialkyl imidazolium Brönsted acidic ionic liquids are shown as better catalysts in comparison to sulfuric acid with similar acid concentration for the depolymerization of <em>poly</em>(ethylene terephthalate) in hot compressed water. The highest activity was found by using 1.00 M aqueous 1-(3-propylsulfonic)-3-methylimidazolium chloride catalyst, where a practically complete decomposition of <em>poly</em>(ethylene terephthalate) could be achieved after 24 h at 210 °C with a 94% isolated yield of terephthalic acid. The superior catalytic activity of 1-(alkylsulfonic)-3-methylimidazolium chloride in comparison to sulfuric acid with similar acidic strength is explained as a result of charge-transfer and dipolar interactions between catalyst and <em>poly</em>(ethylene terephthalate).</p></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772422022000052/pdfft?md5=df3fb543f5a05141401ecc28f112297a&pid=1-s2.0-S2772422022000052-main.pdf","citationCount":"6","resultStr":"{\"title\":\"Sulfonic acid group functionalized Brönsted acidic ionic liquid catalyzed depolymerization of poly(ethylene terephthalate) in water\",\"authors\":\"Ananda S. Amarasekara, Jay A. Gonzalez, Victor C. Nwankwo\",\"doi\":\"10.1016/j.jil.2022.100021\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Sulfonic acid group functionalized 1,3-dialkyl imidazolium Brönsted acidic ionic liquids are shown as better catalysts in comparison to sulfuric acid with similar acid concentration for the depolymerization of <em>poly</em>(ethylene terephthalate) in hot compressed water. The highest activity was found by using 1.00 M aqueous 1-(3-propylsulfonic)-3-methylimidazolium chloride catalyst, where a practically complete decomposition of <em>poly</em>(ethylene terephthalate) could be achieved after 24 h at 210 °C with a 94% isolated yield of terephthalic acid. The superior catalytic activity of 1-(alkylsulfonic)-3-methylimidazolium chloride in comparison to sulfuric acid with similar acidic strength is explained as a result of charge-transfer and dipolar interactions between catalyst and <em>poly</em>(ethylene terephthalate).</p></div>\",\"PeriodicalId\":100794,\"journal\":{\"name\":\"Journal of Ionic Liquids\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2772422022000052/pdfft?md5=df3fb543f5a05141401ecc28f112297a&pid=1-s2.0-S2772422022000052-main.pdf\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Ionic Liquids\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2772422022000052\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Ionic Liquids","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2772422022000052","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Sulfonic acid group functionalized Brönsted acidic ionic liquid catalyzed depolymerization of poly(ethylene terephthalate) in water
Sulfonic acid group functionalized 1,3-dialkyl imidazolium Brönsted acidic ionic liquids are shown as better catalysts in comparison to sulfuric acid with similar acid concentration for the depolymerization of poly(ethylene terephthalate) in hot compressed water. The highest activity was found by using 1.00 M aqueous 1-(3-propylsulfonic)-3-methylimidazolium chloride catalyst, where a practically complete decomposition of poly(ethylene terephthalate) could be achieved after 24 h at 210 °C with a 94% isolated yield of terephthalic acid. The superior catalytic activity of 1-(alkylsulfonic)-3-methylimidazolium chloride in comparison to sulfuric acid with similar acidic strength is explained as a result of charge-transfer and dipolar interactions between catalyst and poly(ethylene terephthalate).