Pd immobilized on amine-functionalized magnetite nanoparticles: a novel and highly active catalyst for hydrogenation and Heck reactions

• Published in: Green chemistry : an international journal and green chemistry resource : GC Vol. 13; no. 5; pp. 1238 - 1243
• Main Authors: Zhang, Fengwei, Jin, Jun, Zhong, Xing, Li, Shuwen, Niu, Jianrui, Li, Rong, Ma, Jiantai
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 01.01.2011
• Subjects: ambient temperature; Catalysis; Catalysts; Catalysts: preparations and properties; Catalytic reactions; Chemistry; Colloidal state and disperse state; Conversion; ethanol; Ethyl alcohol; Exact sciences and technology; Fourier transform infrared spectroscopy; General and physical chemistry; green chemistry; hydrogen; hydrogenation; Kinetics and mechanisms; Magnetite; Nanoparticles; Organic chemistry; palladium; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Reactivity and mechanisms; Recycled; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Transmission electron microscopy; X-ray diffraction; X-ray photoelectron spectroscopy; One pot reaction; Nitro compound; Fourier transformation; Iron oxide; Nanoparticle; Immobilization; Heck reaction; Hydrogenation; Supported catalyst; Template; Characterization; Unsaturated compound; Chemical reduction; Amine; Magnetite; Functionalization; Photoelectron spectrometry; Aromatic compound; Recycled material; Hydrogen molecules; Recycling; Chemical synthesis; Platinoid; Catalyst support; Ethanol; Vibrating sample magnetometer; Reuse; Transition metal; Palladium; X ray diffraction; Infrared spectrometry; Heterogeneous catalysis; Transmission electron microscopy; Adsorption; Time of flight method; X ray diffractometry; Room temperature
• ISSN: 1463-9262; 1463-9270; 1463-9270
• DOI: 10.1039/c0gc00854k

A palladium-based catalyst supported on amine-functionalized magnetite nanoparticles was successfully prepared by a facile one-pot template-free method combined with a metal adsorption-reduction procedure. The catalyst was characterized by TEM, XRD, XPS, FT-IR and VSM. The catalyst afforded fast conversions for various aromatic nitro and unsaturated compounds, and with a turn-over frequency (TOF) of 83.33 h-1 under a H2 atmosphere in ethanol, even at room temperature. Furthermore, it was found that the catalyst showed a high activity for the Heck reaction, affording over a 93% yield in all the cases investigated. Interestingly, the novel catalyst could be recovered in a facile manner from the reaction mixture and recycled eight times without any significant loss in activity.