囊泡双层膜中4,44"4-四(正丙氧基羰基)酞菁钴(Ⅱ)催化分子氧氧化巯基苯的反应  

Aerobic Oxidation of Thiophenol Catalytzed by Co(Ⅱ) Tetrakis(n-propyl-oxycarbonyl)phthalocyanine in Bilayer Membrane of Vesicle

作　　者：宋溪明[1] 张丹[1] 常晓红[1] 张丽[1] 张向东[1] 刘祁涛[1] 

机构地区：[1]辽宁大学化学科学与工程学院,沈阳110036

出　　处：《高等学校化学学报》2005年第2期394-396,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 95 710 15 );辽宁省青年科技人才培养基金 (批准号 :973 0 0 7)资助

摘　　要：The oxidation of thiophenol（RSH） to phenyl disulfide catalyzed by Co（Ⅱ） tetrakis（propyl-oxycarbonyl）phthalocyanine[CoPc（COOC3H7）4] in the presence of molecular oxygen was studied in synthetic bilayer membrane of vesicle, which is composed of hexadecyl 2-hydroxy-3-chloropropyl phosphate, SDS micelle, ethanol and benzene respectively. The catalytic activities followed the order of \{CoPc（COOC\}3H7）4 in the bilayer membrane>ethanol>benzene, and in the bilayer membraneSDS micelle. UV-Vis spectroscopic studies reveal that the catalytic oxidation proceeds through RS--CoPc-O2 intermediate. The catalytic activity of CoPc（COOC3H7）4 in the bilayer membrane of vesicle higher than that in the other media is considered to be attributable to the disaggregation of CoPc（COOC3H7）4 incorporated into the bilayer membrane and the easier H+ dissociation of RSH on the polar surface of the bilayer membrane bordered by bulk aqueous phase.The oxidation of thiophenol(RSH) to phenyl disulfide catalyzed by Co(Ⅱ) tetrakis(propyl-oxycarbonyl)phthalocyanine[CoPc(COOC_3H_7)_4] in the presence of molecular oxygen was studied in synthetic bilayer membrane of vesicle, which is composed of hexadecyl 2-hydroxy-3-chloropropyl phosphate, SDS micelle, ethanol and benzene respectively. The catalytic activities followed the order of \{CoPc(COOC\}_3H_7)_4 in the bilayer membrane>ethanol>benzene, and in the bilayer membraneSDS micelle. UV-Vis spectroscopic studies reveal that the catalytic oxidation proceeds through RS--CoPc-O_2 intermediate. The catalytic activity of CoPc(COOC_3H_7)_4 in the bilayer membrane of vesicle higher than that in the other media is considered to be attributable to the disaggregation of CoPc(COOC_3H_7)_4 incorporated into the bilayer membrane and the easier H+ dissociation of RSH on the polar surface of the bilayer membrane bordered by bulk aqueous phase.

关 键 词：囊泡 钴酞菁衍生物 催化反应 巯基苯 氧化 

分 类 号：O631[理学—高分子化学]