Bimetallic oxide nanoparticles confined in ZIF‐67‐derived carbon for highly selective oxidation of saturated C–H bond in alkyl arenes

Abstract

Zeolite imidazolate frameworks (ZIFs) have recently emerged as an ideal type of carbon precursors with abundant tailorability. In this work, a series of ZIF‐derived porous carbon catalysts have been prepared with encapsulation of bimetallic oxide nanoparticles via simple thermal treatment. The composition and structure of these catalysts were confirmed in detail by different characterization methods. The bimetallic oxide (Mn/Co, Fe/Co, and Cu/Co) nanoparticles were encapsulated in the nitrogen‐doped graphitized carbon matrix. Moreover, the hierarchically porous structure and carbon defects were successfully constructed in the carbon catalysts. Additionally, in the selective oxidation of saturated C–H bonds in alkyl arenes, the carbon catalysts demonstrate outstanding performance for the oxidation of C–H bonds to corresponding carboxyl groups. This was due to their unique structure can greatly promote mass transfer and molecular oxygen activation, resulting in high conversion and high selectivity. Remarkably, this work here could also provide a novel strategy to the controllable synthesis of metal–organic frameworks (MOFs)‐derived carbon catalysts for enhanced performance in heterogeneous catalysis.

Metal and Metal Oxide Nanoparticles Catalyzed C–H Activation for C–O and C–X (X = Halogen, B, P, S, Se) Bond Formation

“…Very few examples deal with the use of MNPs as a catalyst for the selective C-H oxidation of toluene to benzoic acid (Scheme 7) [71][72][73]. In 2016, Sama and coworkers [71] reported the preparation of Au NPs supported on polydopamine-reduced graphene oxide (Au-pDA-rGO) and its use as catalyst for the se Scheme 6.…”

“…Very few examples deal with the use of MNPs as a catalyst for the selective C-H oxidation of toluene to benzoic acid (Scheme 7) [71][72][73]. Scheme 6.…”

“…Very few examples deal with the use of MNPs as a catalyst for the selecti oxidation of toluene to benzoic acid (Scheme 7) [71][72][73]. In 2016, Sama and coworkers [71] reported the preparation of Au NPs suppo polydopamine-reduced graphene oxide (Au-pDA-rGO) and its use as catalyst fo lective oxidation of benzylic C-H bonds in CH3CN at 60 °C under an O2 atmosp In 2016, Sama and coworkers [71] reported the preparation of Au NPs supported on polydopamine-reduced graphene oxide (Au-pDA-rGO) and its use as catalyst for the selective oxidation of benzylic C-H bonds in CH 3 CN at 60 • C under an O 2 atmosphere (10 bar) in the presence of N-hydroxyphthalimide (NHPI).…”

Cu(II) and Co(II) Schiff‐Base Complexes Immobilized on Layered Double Hydroxide: Synthesis, Characterizations, DFT Calculations and Catalytic Activity

“…The efficiency of LDH-[NAPABA-Cu(II)] catalyst being compared with the other reported catalysts (Table 4). [8][9][10][65][66][67][68][69]…”

A self-assembly solvothermal synthesis of SiMoVn@[Cu6O(TZI)3(H2O)6]4·nH2O for the efficient selective oxidation of various alkylbenzenes

“…11 The classic oxidation of alkylbenzenes was catalyzed by homogeneous catalysts comprising precious metals (such as Pd and Ru) and powerful oxidants such as KMnO 4 , CrO 3 , or HNO 3 . [12][13][14][15][16][17] There is no doubt that these chemicals are either expensive or environmental pollutants. Thus, developing cheap, recyclable and environment-friendly catalysts for the oxidation of alkylbenzene is still a great challenge.…”