Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes
| العنوان: | Phosphonate‐Modified UiO‐66 Brønsted Acid Catalyst and Its Use in Dehydra‐Decyclization of 2‐Methyltetrahydrofuran to Pentadienes |
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| المؤلفون: | Gaurav Kumar, Tarnuma Tabassum, Tso Hsuan Chen, Susannah L. Scott, Dionisios G. Vlachos, Songi Han, Michael Tsapatsis, Xinyu Li, Sheetal K. Jain, Stavros Caratzoulas, Paul J. Dauenhauer, Matheus Dorneles de Mello |
| المصدر: | Angewandte Chemie. 132:13362-13368 |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 010405 organic chemistry, 2-Methyltetrahydrofuran, General Chemistry, General Medicine, 010402 general chemistry, 01 natural sciences, Phosphonate, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Deprotonation, chemistry, Organic chemistry, Metal-organic framework, Brønsted–Lowry acid–base theory, Selectivity, Phosphoric acid |
| الوصف: | Phosphorus-modified all-silica zeolites exhibit activity and selectivity in certain Bronsted acid catalyzed reactions for biomass conversion. In an effort to achieve similar performance with catalysts having well-defined sites, we report the incorporation of Bronsted acidity to metal-organic frameworks with the UiO-66 topology, achieved by attaching phosphonic acid to the 1,4-benzenedicarboxylate ligand and using it to form UiO-66-PO3 H2 by post-synthesis modification. Characterization reveals that UiO-66-PO3 H2 retains stability similar to UiO-66, and exhibits weak Bronsted acidity, as demonstrated by titrations, alcohol dehydration, and dehydra-decyclization of 2-methyltetrahydrofuran (2-MTHF). For the later reaction, the reported catalyst exhibits site-time yields and selectivity approaching that of phosphoric acid on all-silica zeolites. Using solid-state NMR and deprotonation energy calculations, the chemical environments of P and the corresponding acidities are determined. |
| تدمد: | 1521-3757 0044-8249 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32d503c7ca4491a24bed06de14e4aa29 https://doi.org/10.1002/ange.202001332 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....32d503c7ca4491a24bed06de14e4aa29 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213757 00448249 |
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