Two types of heterogeneous catalytic materials, Mn^II-L₃imid@Cox and Mn^II-L₃imid@PCox, have been synthesized and compared by covalent grafting of a catalytically active [Mn^II-L₃imid] complex on the surface of an oxidized activated carbon (Cox) and an oxidized pyrolytic carbon from recycled-tire char (PCox). Both hybrids are non-porous bearing graphitic layers intermixed with disordered sp²/sp³ carbon units. Raman spectra show that (I_D/I_G)_{activatedcarbon} > (I_D/I_G)_{pyrolyticcarbon} revealing that oxidized activated carbon(Cox) is less graphitized than oxidized pyrolytic carbon (PCox). The Mn^II-L₃imid@Cox and Mn^II-L₃imid@PCox catalysts were evaluated for alkene oxidation with H₂O₂ in the presence of CH₃COONH₄. Both showed high selectivity towards epoxides and comparing the achieved yields and TONs, they appear equivalent. However, Mn^II-L₃imid@PCox catalyst is kinetically faster than the Mn^II-L₃imid@Cox (accomplishing the catalytic runs in 1.5 h vs. 5 h). Thus, despite the similarity in TONs Mn^II-L₃imid@PCox achieved extremely higher TOFs vs. Mn^II-L₃imid@Cox. Intriguingly, in terms of recyclability, Mn^II-L₃imid@Cox could be reused for a 2th run showing a ∼20% loss of its catalytic activity, while Mn^II-L₃imid@PCox practically no recyclable. This phenomenon is discussed in a mechanistic context; interlinking oxidative destruction of the Mn-complex with high TOFs for Mn^II-L₃imid@PCox, while the low-TOFs of Mn^II-L₃imid@Cox are preventive for the oxidative destruction of the Mn-complex.

合成了两种类型的非均相催化材料，即Mn ^II -L ₃ imid @ Cox和Mn ^II -L ₃ imid @ PCox，并通过共价接枝了具有催化活性的[ Mn ^II -L ₃ imid]络合物进行了比较。废轮胎焦（PCox）中的氧化活性炭（Cox）和热解炭氧化而成。两种杂化物都是无孔的石墨层，混合有无序的sp ² / sp ³碳单元。拉曼光谱表明（I _D / I _G）_{activatedcarbon} >（I _d / I _{G ^}）_{pyrolyticcarbon}揭示氧化活性炭（COX）比氧化热解碳（低石墨化PCox） 。的锰^II -L ₃ IMID @考克斯和锰^II -L ₃ IMID @ PCox催化剂用H烯烃氧化进行了评价₂ ö ₂在CH的存在₃ COONH ₄。两者均显示出对环氧化物的高选择性，并且比较了所获得的产率和TON，它们看起来是等效的。但是，Mn ^II -L₃ imid @ PCox催化剂在动力学上比Mn ^II -L ₃ imid @ Cox催化剂快（完成了1.5小时vs. 5小时的催化运行）。因此，尽管在吨的相似性的Mn ^II -L ₃ IMID @ PCox实现极其高的Tofs VS。Mn ^II -L ₃ imid @ Cox。有趣的是，就可回收性而言， Mn ^II -L ₃ imid @ Cox可重复使用第二次，显示其催化活性损失约20％，而Mn ^II -L ₃ imid @ PCox几乎没有可回收资源。在机械方面讨论了这种现象。Mn ^II -L ₃ imid @ PCox具有高TOF的Mn络合物的相互氧化破坏，而Mn ^II -L ₃ imid @ Cox的低TOF则可以防止Mn复合物的氧化破坏。