Mo/γ-Al2O3 catalysts for the Biginelli reaction. Effect of Mo loading
| Autor: | S. Menad, Gwendoline Lafaye, L. Bennini, K. Kouachi, Stéphane Pronier |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Chemistry
Process Chemistry and Technology Biginelli reaction Inorganic chemistry chemistry.chemical_element Catalysis Metal chemistry.chemical_compound Molybdenum visual_art Yield (chemistry) Pyridine visual_art.visual_art_medium Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Brønsted–Lowry acid–base theory |
| Zdroj: | Journal of Molecular Catalysis A: Chemical. 395:210-216 |
| ISSN: | 1381-1169 |
| DOI: | 10.1016/j.molcata.2014.08.025 |
| Popis: | Alumina supported Mo catalysts with varying metal loading (2–12 wt%) were tested in the Biginelli reaction under solvent free conditions for synthesis of 3,4-dihydropyrimidin-2-(1H)-one (DHPM). The DHPM yield increased with Mo loading, going through a maximum for 7 wt% Mo. Alumina supported Mo catalysts appeared to be highly stable and reusable materials for this reaction. A suite of characterization techniques that included X-ray diffraction, Fast Fourier Transform analysis and FTIR of adsorbed pyridine revealed that the DHPM formation is related to the existence of Bronsted acid sites that would be linked to the presence of Al 2 (MoO 4 ) 3 phase. |
| Databáze: | OpenAIRE |
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