کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
66838 48453 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient allylic oxidation of cyclohexene with oxygen catalyzed by chloromethylated polystyrene supported tridentate Schiff-base complexes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Efficient allylic oxidation of cyclohexene with oxygen catalyzed by chloromethylated polystyrene supported tridentate Schiff-base complexes
چکیده انگلیسی

Four novel chloromethylated polystyrene supported tridentate Schiff-base metal complexes (PS–DA–M, M = Cu2+, Co2+, Ni2+ and Mn2+, respectively) were prepared by chloromethylated polystyrene and tridentate Schiff-base ligands, which were synthesized by 2,4-dihydroxyacetophotone with 2-aminopyridine. The complexes were characterized by the methods of ICP, FT-IR, XPS and TG/DTA. The catalytic activity of the complexes in the oxidation of cyclohexene with molecular oxygen was determined. The results showed that oxidation reaction was occurred in the allylic carbon atoms. The products are cyclohexene oxide, 2-cyclohexene-1-ol, 2-cyclohexene-1-one and 2-cyclohexene-1-hydroperoxide. Although all of four complexes showed good catalytic activity, PS–DA–Cu exhibited the best. The conversion of cyclohexene can be reached to 51.9% under the temperature of 343 K when using 2 mg of PS–DA–Cu to catalytic oxidation of 2 ml of cyclohexene. The influences of reaction temperature, the amount of catalyst, the reaction time were investigated, and the mechanism of cyclohexene oxidation was also discussed.

The abilities of supported tridentate Schiff-base complexes to catalytic oxidation of cyclohexene with oxygen were studied. PS–DA–Cu exhibited certain strongest catalytic activities and the conversion of cyclohexene was 51.9%.Figure optionsDownload high-quality image (62 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 320, Issues 1–2, 1 April 2010, Pages 56–61
نویسندگان
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