Fe and Cu based heterogeneous catalysts were evaluated in the isomerization reaction of α- and β-pinene epoxides. The metals were incorporated on SBA-15 and MCM-41 using incipient wetness impregnation procedure and the materials were characterized by XRD, Raman spectroscopy, BET analysis, NH₃-TPD, TEM and XPS. 1.4/Fe-MCM-41 was the catalyst with the highest TON value (364) and α-pinene epoxide conversion (73%) with a campholenic aldehyde selectivity of 59%, while from β-pinene epoxide 1.4/Fe-SBA-15 was the material with the highest TON (299) and selectivity (100%) to myrtanal with a substrate conversion of 60%. Cu based materials presented lowest TON value for the rearrangement of β-pinene epoxide than using α-pinene epoxide as substrate. Besides, it was elucidated that the formation of campholenic aldehyde and myrtanal is function of the presence of metal oxides, mean particle diameter and the strength of acidity; moreover, the most active catalysts did not present leaching under the reaction conditions. 1.4/Fe-MCM-41 can be used until five times without loss of catalytic activity with α pinene epoxide. Based on the characterization and different products synthetized, a reaction mechanism for the rearrangement reaction of α-pinene epoxide is proposed. This is the first report of Cu heterogenized on mesoporous materials for the isomerization reaction of monoterpenes epoxides.

在α-和β-pine烯环氧化物的异构化反应中评估了Fe和Cu基非均相催化剂。使用初期湿润浸渍法将这些金属结合到SBA-15和MCM-41上，并通过XRD，拉曼光谱，BET分析，NH ₃对材料进行表征。-TPD，TEM和XPS。1.4 / Fe-MCM-41是TON值最高的催化剂（364），α-pine烯环氧化物的转化率（73％），喜树碱醛选择性为59％，而β-pine烯环氧化物1.4 / Fe-SBA-15是具有最高TON（299）和选择性（100％）对木霉菌的物质，底物转化率为60％。与使用α-pine烯环氧化物作为底物相比，Cu基材料呈现出的β-pine烯环氧化物重排的最低TON值。此外，阐明了樟脑醛和肉豆蔻醛的形成是金属氧化物的存在，平均粒径和酸强度的函数。此外，最活泼的催化剂在反应条件下没有浸出。1.4 / Fe-MCM-41可以使用5次，而不会损失αpin烯环氧化物的催化活性。根据表征和合成的不同产物，提出了α-pine烯环氧化物重排反应的反应机理。这是在单孔环氧化物的异构化反应中介孔材料上Cu杂化的首次报道。