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Fe 3 O 4 @BNPs‐CPTMS‐Chitosan‐Pd(0) as an Efficient and Stable Heterogeneous Magnetic Nanocatalyst for the Chemoselective Oxidation of Alcohols and Homoselective Synthesis of 5‐Subestituted 1 H ‐Tetrazoles
Author(s) -
Khodamorady Minoo,
Bahrami Kiumars
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201901497
Subject(s) - catalysis , boehmite , palladium , leaching (pedology) , chitosan , chemistry , heterogeneous catalysis , hydrothermal circulation , nuclear chemistry , solvent , alcohol oxidation , chemical engineering , inorganic chemistry , materials science , organic chemistry , aluminium , environmental science , soil science , engineering , soil water
In this content, a stable, efficient, active, reusable and inexpensive magnetic boehmite was synthesized by hydrothermal sol‐gel method. In the next step magnetic boehmite immobilized further with palladium chitosan complex (Fe 3 O 4 @BNPs‐CPTMS‐Chitosan‐Pd(0)). This novel nanocatalyst was used for the oxidation of alcohols in ethanol and the preparation of 5‐substituted tetrazoles in solvent‐free conditions. To confirm the structure of catalyst, a variety of techniques, including FT‐IR, XRD, FESEM, TEM, EDX, mapping, VSM, TGA‐DTA, BET, ICP and UV‐Visible were used. The mol % of catalyst was obtained with ICP (2.8 mol%). Also, some benefits of the catalyst are: excellent magnetic properties, easy separating from the reaction mixture with the external magnet, the use of cheap and affordable materials, good surface area (55.94 m 2 /g), low palladium leaching from the catalyst surface, use the green ligand and the use of catalyst for at least 5 consecutive times without reducing the catalytic activity.