Polyoxometalates prepared with W or Mo precursors, have been used together with H₂O₂ as homogeneous and heterogeneous catalysts for the adipic acid synthesis from cyclohexene. In this context, the K₃PMo₁₂O₄₀, Cs₃PMo₁₂O₄₀, K₃PW₁₂O₄₀ and Cs₃PW₁₂O₄₀ heteropolysalts were synthesized and calcined at 600 °C, characterized by XRD, acid-base titration, Raman Spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, SEM-EDX and evaluated in the cyclohexene oxidation to adipic acid. The XRD and FT-IR analyzes showed that the polyoxometalates structures were stable even after calcination at 600 °C. The thermogravimetric results showed that the heteropolysalts present superior thermal resistance compared to heteropolyacids. However, the acidities of the heteropolysalts are lower than the heteropolyacids. The K₃PW₁₂O₄₀ catalyst presented the best performance in the catalytic tests (77% yield in adipic acid) associated with its higher total acid sites density. The catalytic performance of this recycled catalyst was evaluated and the yield in adipic acid was maintained.

由W或Mo前体制备的多金属氧酸盐已与H ₂ O _2一起用作均相和非均相催化剂，用于由环己烯合成己二酸。在这种情况下，K ₃ PMo ₁₂ O ₄₀，Cs ₃ PMo ₁₂ O ₄₀，K ₃ PW ₁₂ O ₄₀和Cs ₃ PW ₁₂ O ₄₀合成杂多盐并在600°C下煅烧，通过XRD，酸碱滴定，拉曼光谱，傅里叶变换红外（FT-IR）光谱，SEM-EDX进行表征，并在环己烯氧化为己二酸中进行评估。XRD和FT-IR分析表明，即使在600°C煅烧后，多金属氧酸盐结构也很稳定。热重分析结果表明，杂多盐与杂多酸相比具有优异的耐热性。但是，杂多盐的酸度低于杂多酸。K ₃ PW ₁₂ O ₄₀在较高的总酸位密度下，该催化剂在催化试验中表现出最佳性能（己二酸产率为77％）。评价了该循环催化剂的催化性能，并保持了己二酸的产率。