Understanding the Synthesis of Supported Vanadium Oxide Catalysts Using Chemical Grafting
| العنوان: | Understanding the Synthesis of Supported Vanadium Oxide Catalysts Using Chemical Grafting |
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| المؤلفون: | Ive Hermans, Michael P. Hanrahan, Scott L. Carnahan, Alyssa M. Love, Melissa C. Cendejas, Pajean Uchupalanun, Aaron J. Rossini |
| المصدر: | Chemistry – A European Journal. 26:1052-1063 |
| بيانات النشر: | Wiley, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 010405 organic chemistry, Organic Chemistry, Oxide, Vanadium, chemistry.chemical_element, General Chemistry, 010402 general chemistry, 01 natural sciences, Chemical reaction, Catalysis, Vanadium oxide, 0104 chemical sciences, Silanol, chemistry.chemical_compound, chemistry, Chemical engineering, Reactivity (chemistry), Incipient wetness impregnation |
| الوصف: | The complexity of variables during incipient wetness impregnation synthesis of supported metal oxides precludes an in-depth understanding of the chemical reactions governing the formation of the dispersed oxide sites. This contribution describes the use of vapor phase deposition chemistry (also known as grafting) as a tool to systematically investigate the influence of isopropanol solvent on VO(Oi Pr)3 anchoring during synthesis of vanadium oxide on silica. The availability of anchoring sites on silica was found to depend not only on the pretreatment of the silica but also on the solvent present. H-bond donors can reduce the reactivity of isolated silanols whereas disruption of silanol nests by H-bond acceptors can turn unreactive H-bonded silanols into reactive anchoring sites. The model suggested here can inform improved syntheses with increased dispersion of metal oxides on silica. |
| تدمد: | 1521-3765 0947-6539 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa20dba03bc8e2ce1a0e30b0c5e2b1dd https://doi.org/10.1002/chem.201904260 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fa20dba03bc8e2ce1a0e30b0c5e2b1dd |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213765 09476539 |
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