resumo
A novel silica supported iron(III)-based heterogeneous catalyst (FeCl3-imine@SiO2) has been synthesized and characterized by several techniques, such as FTIR, nitrogen adsorption analysis (BET), SEM-EDX, XRD, EPR, AAS and XPS analyses. The catalyst showed excellent activity for selective oxidation of alcohols to corresponding carbonyl compounds in water under atmospheric pressure of oxygen without using any additive. Notably, the heterogeneous catalyst showed remarkable improvement over its homogeneous counterpart, which might be attributable to the synergic effect between the metal and the supported ligand. The catalyst could be easily recovered by simple filtration and reused several times without compromising its activity. A wide range of primary and secondary alcohols including heterocyclic alcohols are tolerated as substrates.
palavras-chave
IRON-OXIDE NANOPARTICLES; AEROBIC OXIDATION; BENZYL ALCOHOL; SELECTIVE OXIDATION; PALLADIUM NANOPARTICLES; SECONDARY ALCOHOLS; REUSABLE CATALYST; ROOM-TEMPERATURE; HIGHLY EFFICIENT; ALLYLIC ALCOHOLS
categoria
Chemistry
autores
Sahu, D; Silva, AR; Das, P
nossos autores
Ana Rosa Silva
Investigador PrincipalGrupos
agradecimentos
The CSIR, New Delhi, is gratefully acknowledged for financial support (Grant no: 02/0081/12). The UGC, New Delhi was acknowledged SAP-DRS programme and BSR-RFSMS fellowship. DST, New Delhi has also been acknowledged for providing Surface Area Analyzer to the Department under FIST programme. SAIF, NEHU, Shillong and SAFE, STIC, Cochin are acknowledged for TEM and SEM analysis respectively.