催化学报 ›› 2014, Vol. 35 ›› Issue (10): 1701-1708.DOI: 10.1016/S1872-2067(14)60113-3
Alekha Kumar Sutara, Yasobanta Dasa,b, Sasmita Pattnaika, Anita Routaraya, Nibedita Natha, Prasanta Rathb, Tungabidya Maharanac
Alekha Kumar Sutara, Yasobanta Dasa,b, Sasmita Pattnaika, Anita Routaraya, Nibedita Natha, Prasanta Rathb, Tungabidya Maharanac
摘要:
The novel recyclable free -ONNO- tetradentate Schiff base ligand N,N′-bis(2-hydroxy-3- methoxybenzaldehyde)4-methylbenzene-1,2-diamine (3-MOBdMBn) was synthesized. Complexation of this ligand with zinc (3-MOBdMBn-Zn) was performed, and the catalytic activity of the complex was evaluated. The polymer-supported analog of this complex (P-3-MOBdMBn-Zn) was synthesized, and its catalytic activity was studied. These free and polymer-anchored zinc complexes were prepared by the reactions of metal solutions with one molar equivalent of unsupported 3-MOBdMBn or P-3-MOBdMBn in methanol under nitrogen. The catalytic activity of 3-MOBdMBn-Zn and P-3-MOBdMBn-Zn was evaluated in phenol oxidation. The activity of P-3-MOBdMBn-Zn was significantly affected by the polymer support, and the rate of phenol conversion was around 50% for polystyrene-supported 3-MOBdMBn. The experimental results indicated that the reaction rate was affected by the polymer support, and the rate of phenol conversion was 1.64 μmol/(L·s) in the presence of polystyrene-supported 3-MOBdMBn.