Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2010, Vol. 31 ›› Issue (12): 1507-1512.DOI: 10.3724/SP.J.1088.2010.00627

• Research papers • Previous Articles     Next Articles

Metalloporphyrins Supported on Styrene-Hydroxyethyl Methacrylate Copolymer Microspheres: Preparation and Catalytic Performance for Hydroxylation of Cyclohexane

YE Yuanjian, HUANG Jinwang*, CAI Jinhua, WU Wenhai, YU Hancheng, ZHOU Xiantai, JI Hongbing, JI Liangnian   

  1. MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China
  • Received:2010-06-30 Online:2010-12-13 Published:2014-04-26

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Abstract: A series of styrene-hydroxyethyl methacrylate copolymer (P(St-co-HEMA)) microsphere-immobilized metalloporphyrin (MP) were prepared by the esterification of a hydroxyl in copolymer microsphere surface with a carboxyl chloride in the porphyrin ring, and were characterized by scanning electron microscopy, UV-Vis spectroscopy, Fourier transformation infrared spectroscopy and thermal gravimetric analysis. The catalytic performance of these catalysts for cyclohexane hydroxylation in the metalloporphyrin-O2-ascorbic acid system was measured. The results indicated that the supported metalloporphyrins are more efficient than the non-supported ones and can retain their high turnover numbers after being reused four times. The catalytic activity of the immobilized catalysts follows the order of P(St-co-HEMA)FeP > P(St-co-HEMA)MnP > P(St-co-HEMA)CoP.

Key words: metalloporphyrin, copolymer microsphere, cyclohexane, hydroxylation, iron, manganese, cobalt