Accessibility and Interaction of Surface OH Groups in Microporous and Mesoporous Catalysts Applied for Vapor-Phase Beckmann Rearrangement of Oximes
Autor: | V. R. Reddy Marthala, Jörg Frey, Michael Hunger |
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Rok vydání: | 2010 |
Předmět: | |
Zdroj: | Catalysis Letters. 135:91-97 |
ISSN: | 1572-879X 1011-372X |
DOI: | 10.1007/s10562-010-0274-7 |
Popis: | 1H and 2H MAS NMR spectroscopy were utilized for investigating the interaction of surface complexes upon adsorption of cyclohexanone and cyclododecanone oxime on MFI-type zeolites and [Al]SBA-15. Signals of hydrogen-bonded and protonated complexes were identified and evidenced the diffusion of cyclohexanone oxime into the micropores of silicalite-1 and ZSM-5 and limited accessibility of acid sites in [Al]SBA-15 for cyclododecanone oxime. 1H and 2H MAS NMR spectroscopy were utilized for investigating the accessibility and interaction of surface OH groups on microporous MFI-type zeolites and mesoporous [Al]SBA-15 material with oximes of different molecular sizes. |
Databáze: | OpenAIRE |
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