| چکیده انگلیسی مقاله |
In this study, halloysite tubular nanoclay was applied as a template for the synthesis of HNTs@Fe3O4@HPA magnetic catalysts for the first time. Then, it w::as char::acterized with the FT-IR, XRD, TGA, EDX-Map, FE-SEM, TEM, BET, ICP-MS, and DLS techniques. The nanocomposites resulting from these studies were used in the synthesis of spiro-2-amino-4H-cromene and 1,2,4-triazolidine-3-thione derivatives in room temperature. The HNTs@Fe3O4@HPA catalyst showed promising features for the reaction, such as shorter reaction time, high product yields (about 90–95%), simple workup, easy removal, and reusability of the catalyst for up to 5 times without significant loss in its efficiency. This has made the protocol sustainable and economic. |
