Abstract
Ordered mesoporous silicas (OMSs) attract considerable attention due to their advanced structural properties. However, for the pristine silica materials, the inert property greatly inhibits their catalytic applications. Thus, to contribute to the versatile surface of OMSs, different metal active sites, including acidic/basic sites and redox sites, have been introduced into specific locations (mesoporous channels and framework) of OMSs and the metal-functionalized ordered mesoporous silicas (MOMSs) show great potential in the catalytic applications. In this review, we first present the categories of metal active sites. Then, the synthesized processes of MOMSs are thoroughly discussed, in which the metal active sites would be introduced with the assistance of organic groups into the specific locations of OMSs. In addition, the structural morphologies of OMSs are elaborated and the catalytic applications of MOMSs in the oxidation of aromatic compounds are illustrated in detail. Finally, the prospects for the future development in this field are proposed.
Highlights
Owing to the outstanding structural properties of large surface area and pore volume, and well-defined pore system, ordered mesoporous silicas (OMSs) have been paid much attention in the numerous applications of catalysis, adsorption, separation, sensing, medical usage, ecology, and nanotechnology [1,2,3,4,5,6,7]
Ordered mesoporous silicas (OMSs), the metal active sites could be directly introduced into specific locations of OMSs, the metal active sites could be directly introduced into specific locations (including instead of surface, the outside surface, which would further mesoporous channels and framework) instead of the outside which would further strengthen strengthen the interactions between metal sites andSpecifically, support
We provide an overview of the oriented decoration of metal-functionalized mesoporous silica and their applications in the oxidation of aromatic compounds
Summary
Owing to the outstanding structural properties of large surface area and pore volume, and well-defined pore system, ordered mesoporous silicas (OMSs) have been paid much attention in the numerous applications of catalysis, adsorption, separation, sensing, medical usage, ecology, and nanotechnology [1,2,3,4,5,6,7]. Considering the unique pore systempore and versatile framework framework of OMSs, the metal active sites could be directly introduced into specific locations of OMSs, the metal active sites could be directly introduced into specific locations (including (including mesoporous channels and framework) instead of surface, the outside surface, which would further mesoporous channels and framework) instead of the outside which would further strengthen strengthen the interactions between metal sites andSpecifically, support. Grafting commonly used to immobilize the organometallic complexes on the silica surface by the covalent is commonly used to immobilize the organometallic complexes on the silica surface by the covalent linkage, which is much more stable than that obtained by physical adsorption. We provide an overview of the oriented decoration of metal-functionalized mesoporous silica and their applications in the oxidation of aromatic compounds. The applications of MOMSs in the oxidation of aromatic compounds are elaborated and the prospects for future development in this field are proposed
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
