کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
68036 48501 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Organotin-oxometalate coordination polymer catalyzed oxyfunctionalization of monoterpenes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Organotin-oxometalate coordination polymer catalyzed oxyfunctionalization of monoterpenes
چکیده انگلیسی

The organotin-oxometalate coordination polymers [(nBu3Sn)2MO4]·nH2O (where, M = Mo or W) were prepared by the interaction of nBu3SnCl with sodium salts of molybdate or tungstate and tested in oxyfunctionalization of monoterpenes with urea hydroperoxide (UHP) as an oxidizing agent. The oxyfunctionalization of monoterpenes gave commercially important products such as epoxides, ketones and hydroxyl derivatives. Among the two catalyst, organotin-oxomolybdate [(nBu3Sn)2MoO4] showed higher activities and epoxide selectivities under selected liquid phase oxyfunctionalization conditions with most of the monoterpenes such as limonene, α-pinene, β-pinene, carene, camphene, gerniol and linalool. The integrity of the organotin-oxometalates polymers were confirmed by X-ray diffraction BET surface area, FT-IR, FT-Raman, SEM, TG/DTA and MAS NMR (13C, 119Sn) analysis. The effects of reaction parameters on limonene conversions and product selectivities have been studied in detail using [(nBu3Sn)2MoO4] catalyst. There was no leaching of the active catalyst into the reaction medium and catalyst was recyclable without loss in its activity in the oxidation reaction.

The organotin-oxometalate coordination polymers [(nBu3Sn)2MO4]·nH2O, (where, M = Mo or W) were tested in oxyfunctionalization of monoterpenes such as limonene, α-pinene, β-pinene, carene, camphene, gerniol and linalool with urea hydroperoxide (UHP) as an oxidizing agent in acetonitrile solvent to give high epoxide selectivities of monoterpenes. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 270, Issues 1–2, 1 June 2007, Pages 177–184
نویسندگان
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