Intercalation Of Aggregation-free And Well-dispersed Gold Nanoparticles Into The Walls Of Mesoporous Silica As A Robust 'green' Catalyst For N-alkaneoxidation

摘要

In recent years, catalysis by gold has become one of the most intensively studied topics in chemistry. Au-based catalysts have demonstrated very promising activity and selectivity in many chemical processes, and generally, the catalytic properties of heterogeneous Au catalysts have been found to strongly depend on the particle size and stability. The use of Au as a catalyst requires careful and often unconventional preparation of the Au metal, focused on achieving very small and stable Au particles (< 5 nm). Au nanoparticles (NPs) are however mobile on the surface of most supporting oxides, and at present, one of the key problematic issues impeding the application of Au catalysts is the stability of the particles against sintering under reaction conditions.