Heterogenization of molybdenum complexes: Techniques and catalytic applications

Over the past few decades, there has been an increase in research on the synthesis of molybdenum complexes immobilized on various supporting materials. The focus of this review is on the effective techniques for heterogenizing homogeneous molybdenum complexes, their characterization, and applications in various oxidation reactions. A range of ligand systems, incorporating molybdenum complexes onto solid supports including zeolites, silica-based materials, polymers, magnetic nanoparticles, and metal-organic frameworks, have been evaluated for the synthesis of heterogeneous compounds. The catalytic activities of these compounds have been investigated in various catalytic processes, such as oxidation of alkenes and alcohols, oxidative bromination of different substrates, and multi-component reactions, among others. These studies of solid-supported compounds provide valuable information for the development of novel, active catalytic systems that reduce the use of hazardous chemicals and harsh reaction conditions. [Display omitted] •A comprehensive analysis of various solid supports is carried out in order to transform homogeneous molybdenum complexes into heterogeneous compounds.•Zeolite, silica-based materials, polymer supports, metal-organic frameworks, and nanomaterial supports are given more attention than the other supports.•Extensive research has been conducted on the catalytic conversion facilitated by supported complexes.