Since the beginning of catalysis research, recovery and reusability of catalysts are important issues for sustainable process management. Owing to recent breakthroughs, green nanotechnology has tremendous potential to transform homogeneous catalyst with magnetically retrievable nanocatalyst. This approach is much greener, economical, and sustainable. The application of magnetically retrievable nanocatalyst not only overcomes the problem of separation, but also provides very large surface areas and good surface activities. Hence, these nano-particles are strong contenders for catalysis. But, unfortunately these iron oxides nano-derivatives have a strong tendency for aggregation and decomposition. In order to resolve this problem, our group has synthesized silica based organicinorganic hybrid magnetic nanocatalysts. The salient features of the synthesized catalyst such as its stability, rigidity, economic feasibility, effortless recoverability and reusability, make it a valuable green catalyst compared to the other non-magnetic heterogeneous catalytic system. The obtained nanocomposites have been characterized using various physico-chemical techniques such as FT-IR, XRD, XPS, SEM, TEM, EDS, VSM, AAS and ED-XRF. Furthermore, their applications have been investigated for different organic transformations which include oxidation of aromatic amines, Friedel-crafts, Knoevnagel, Pechmann condensation reaction, synthesis of secondary amines, reduction of nitro amines and C-H activation of formamides, C-C, C-S, C-N, C-O coupling reactions. In the foreseeable future, the design of novel magnetic nanostructured catalysts with multiple components and their use is potentially a “double green dream”.

Silica-based magnetically retrievable nanocatalysts for various chemical transformations

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.