Abou Nakad Jessy , Daniel Firth , Muhammad Taoheed Bisiriyu , Kai C. Szeto , Nicolas Merle , Aimery De Mallmann , Régis M. Gauvin , Laurent Delevoye , Unni Olsbye , Mostafa Taoufik
{"title":"介质 H-ZSM-5 上支持的 Ga(iBu)3：硅/铝比例对丙烷芳香化活性和选择性的影响","authors":"Abou Nakad Jessy , Daniel Firth , Muhammad Taoheed Bisiriyu , Kai C. Szeto , Nicolas Merle , Aimery De Mallmann , Régis M. Gauvin , Laurent Delevoye , Unni Olsbye , Mostafa Taoufik","doi":"10.1016/j.catcom.2023.106825","DOIUrl":null,"url":null,"abstract":"<div><p>The grafting of Ga(<em>i</em>Bu)<sub>3</sub> on a series of meso-H-ZSM5, prepared by desilication-dealumination (Si/Al = 25, 50, 100, 200, ∞), has been studied. Materials were characterized by IR, solid-state NMR, BET, ICP and EXAFS. Ga(<em>i</em>Bu)<sub>3</sub> reacts selectively with silanol groups, yielding a monopodal surface species in the mesopores. Importantly, the Brønsted acidic sites remain intact in the micropores, as revealed by IR and <sup>1</sup>H MAS-NMR. These materials can be regarded as bifunctional catalysts, containing isolated Ga sites and Brønsted sites in proximity, suitable for propane aromatization. Catalytic investigations show high activity and selectivity toward aromatics, particularly for low Si/Al ratios.</p></div>","PeriodicalId":263,"journal":{"name":"Catalysis Communications","volume":"187 ","pages":"Article 106825"},"PeriodicalIF":3.4000,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1566736723002273/pdfft?md5=28fdcdf843d6ce5db092992ed99077ff&pid=1-s2.0-S1566736723002273-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Ga(iBu)3 supported on meso H-ZSM-5: Effect of Si/Al ratio on the activity and selectivity in propane aromatization\",\"authors\":\"Abou Nakad Jessy , Daniel Firth , Muhammad Taoheed Bisiriyu , Kai C. Szeto , Nicolas Merle , Aimery De Mallmann , Régis M. Gauvin , Laurent Delevoye , Unni Olsbye , Mostafa Taoufik\",\"doi\":\"10.1016/j.catcom.2023.106825\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The grafting of Ga(<em>i</em>Bu)<sub>3</sub> on a series of meso-H-ZSM5, prepared by desilication-dealumination (Si/Al = 25, 50, 100, 200, ∞), has been studied. Materials were characterized by IR, solid-state NMR, BET, ICP and EXAFS. Ga(<em>i</em>Bu)<sub>3</sub> reacts selectively with silanol groups, yielding a monopodal surface species in the mesopores. Importantly, the Brønsted acidic sites remain intact in the micropores, as revealed by IR and <sup>1</sup>H MAS-NMR. These materials can be regarded as bifunctional catalysts, containing isolated Ga sites and Brønsted sites in proximity, suitable for propane aromatization. Catalytic investigations show high activity and selectivity toward aromatics, particularly for low Si/Al ratios.</p></div>\",\"PeriodicalId\":263,\"journal\":{\"name\":\"Catalysis Communications\",\"volume\":\"187 \",\"pages\":\"Article 106825\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2023-12-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1566736723002273/pdfft?md5=28fdcdf843d6ce5db092992ed99077ff&pid=1-s2.0-S1566736723002273-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Communications\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1566736723002273\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Communications","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1566736723002273","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Ga(iBu)3 supported on meso H-ZSM-5: Effect of Si/Al ratio on the activity and selectivity in propane aromatization
The grafting of Ga(iBu)3 on a series of meso-H-ZSM5, prepared by desilication-dealumination (Si/Al = 25, 50, 100, 200, ∞), has been studied. Materials were characterized by IR, solid-state NMR, BET, ICP and EXAFS. Ga(iBu)3 reacts selectively with silanol groups, yielding a monopodal surface species in the mesopores. Importantly, the Brønsted acidic sites remain intact in the micropores, as revealed by IR and 1H MAS-NMR. These materials can be regarded as bifunctional catalysts, containing isolated Ga sites and Brønsted sites in proximity, suitable for propane aromatization. Catalytic investigations show high activity and selectivity toward aromatics, particularly for low Si/Al ratios.
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Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.
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