Aldol Condensation of Cyclopentanone with Valeraldehyde Over Metal Oxides

Päivi Mäki-Arvela, Nataliya Shcherban, Chloé Lozachmeur, Kari Eränen, Atte Aho, Annika Smeds, Narendra Kumar, Janne Peltonen, Markus Peurla, Vincenzo Russo, Konstantin P. Volcho, Dmitry Yu Murzin

Результат исследования: Научные публикации в периодических изданияхстатья

1 Цитирования (Scopus)

Аннотация

Kinetics of the cross aldol condensation of valeraldehyde with cyclopentanone was investigated in a batch reactor under atmospheric pressure at 130 °C using heterogeneous metal modified oxides, such as CeO 2 –MgO, FeO–MgO, FeO–CaO as well as pristine CaO as catalysts. The catalysts were prepared either by evaporation impregnation or deposition precipitation methods and characterized by XRD, TEM, SEM, nitrogen adsorption, ammonia and CO 2 TPD. The results revealed that an optimum amount of strong basic sites gives the highest ratio between cross condensation and self-condensation products of valeraldehyde. The highest yield of the desired product 2-pentylidenecyclopentanone (66%) was obtained with FeO–MgO prepared by the deposition precipitation methods. Graphical Abstract: Cross-condensation of valeraldehyde with cyclopentanone was investigated over heterogeneous Fe–CaO, CeO–MgO, FeO–CaO and CaO catalysts at 130 °C using cyclopentanone as a solvent and reactant. The highest yield of the desired product, 2-pentylidene-cyclopentanone, finding applications as fragrances, flavours and pharmaceuticals, was 66% obtained over FeO–MgO catalyst exhibiting both acid and basic sites.[Figure not available: see fulltext.].

Язык оригиналаанглийский
Страницы (с-по)1383-1395
Число страниц13
ЖурналCatalysis Letters
Том149
Номер выпуска5
DOI
СостояниеОпубликовано - 1 мая 2019

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