Noncontact catalysis: Initiation of selective ethylbenzene oxidation by Au cluster-facilitated cyclooctene epoxidation
| العنوان: | Noncontact catalysis: Initiation of selective ethylbenzene oxidation by Au cluster-facilitated cyclooctene epoxidation |
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| المؤلفون: | Linda J. Broadbelt, Matthew O. Ross, Anyang Peng, Mayfair C. Kung, Harold H. Kung, Linping Qian, Robert R. O. Brydon |
| المصدر: | Science Advances |
| بيانات النشر: | American Association for the Advancement of Science (AAAS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Reaction mechanism, Multidisciplinary, 010405 organic chemistry, SciAdv r-articles, 010402 general chemistry, Photochemistry, 01 natural sciences, Ethylbenzene, 0104 chemical sciences, Nanoclusters, Catalysis, Chemical kinetics, Chemistry, chemistry.chemical_compound, Hydrocarbon, chemistry, Cyclooctene, Research Articles, Stoichiometry, Research Article |
| الوصف: | In a noncontact catalytic system, intermediaries derived from Au-catalyzed cyclooctene epoxidation effects ethylbenzene oxidation. Traditionally, a catalyst functions by direct interaction with reactants. In a new noncontact catalytic system (NCCS), an intermediate produced by one catalytic reaction serves as an intermediary to enable an independent reaction to proceed. An example is the selective oxidation of ethylbenzene, which could not occur in the presence of either solubilized Au nanoclusters or cyclooctene, but proceeded readily when both were present simultaneously. The Au-initiated selective epoxidation of cyclooctene generated cyclooctenyl peroxy and oxy radicals that served as intermediaries to initiate the ethylbenzene oxidation. This combined system effectively extended the catalytic effect of Au. The reaction mechanism was supported by reaction kinetics and spin trap experiments. NCCS enables parallel reactions to proceed without the constraints of stoichiometric relationships, offering new degrees of freedom in industrial hydrocarbon co-oxidation processes. |
| تدمد: | 2375-2548 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b8a41c981212373c710086712be7fc8 https://doi.org/10.1126/sciadv.aax6637 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9b8a41c981212373c710086712be7fc8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23752548 |
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