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Updated: Jan 20, 2026
Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Fe3O4@SiO2-NH2-ECH-HMTA-Supported Trifluoroacetic Acid: A Magnetically Recyclable Catalyst for One-Pot Synthesis of
Sukanya Tongkhan1, Aekkaphon Mokkarat2, Widchaya Radchatawedchakoon2
1Department of Chemistry, Faculty of Science, Buriram Rajabhat University, Buri Ram 31000, Thailand.
Abstract:
A novel series of magnetic nanocatalysts based on Fe3O4@SiO2-NH2 frameworks were synthesized and functionalized with epichlorohydrin (ECH), hexamethylenetetramine (HMTA), and trifluoroacetic acid (TFA) to afford highly active, magnetically recoverable catalytic systems. Comprehensive physicochemical characterization confirmed the successful stepwise functionalization, morphological stability, and controlled porosity of the materials. The catalytic performance was evaluated in the synthesis of indole derivatives and diketone compounds, where Fe3O4@SiO2-NH2-ECH-HMTA-TFA exhibited superior activity compared with its non-ECH-functionalized analog, attributable to enhanced surface acidity and improved active-site accessibility. Reaction optimization demonstrated excellent yields under mild and green conditions, highlighting the synergistic effect of organic functional groups and the magnetic nanoplatform. The catalysts showed remarkable reusability, maintaining high activity over several cycles without significant structural degradation. This study demonstrates a sustainable route for designing multifunctional magnetic catalysts with broad applicability in C-C bond-forming reactions.
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