Bimetallic oxide nanoparticles confined in ZIF‐67‐derived carbon for highly selective oxidation of saturated C–H bond in alkyl arenes. (12th October 2020)

• Record Type: Journal Article
• Authors: Huang, Cheng; Su, Xiaoyan; Gu, Xiangyu; Liu, Rui; Zhu, Hongjun
• Is Part Of: Applied organometallic chemistry. Volume 35:Number 1(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-10-12
• Subjects: bimetallic oxide -- C–H bonds oxidation -- hierarchical pores -- ZIF‐67‐derived carbon; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.6047
• Languages: English
• ISSNs: 0268-2605

Abstract

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. Abstract : A series of zeolite imidazolate framework (ZIF)‐derived porous carbon catalysts have been prepared with encapsulation of bimetallic oxide nanoparticles via simple thermal treatment, and the hierarchically porous structure and carbon defects were successfully constructed in these catalysts. The unique structure of catalysts can promote the mass transfer and molecular oxygen activation. Thus, in selective oxidation of saturated C–H bonds of alkyl arenes, high conversion and selectivity were obtained by utilizing the rationally designed catalysts.